Table of Contents

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

		
þ	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934	

For the Quarterly Period Ended September 30, 2017  

OR

		
¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934	

For the Transition Period from             to             
Commission File No. 1-11778

CHUBB LIMITED
(Exact name of registrant as specified in its charter)

	
		
Switzerland	98-0091805	
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)	

Baerengasse 32
Zurich, Switzerland CH-8001
(Address of principal executive offices) (Zip Code)
+41 (0)43 456 76 00
(Registrant’s telephone number, including area code)
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
YES  þ                                                   NO   ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).
YES  þ                                                  NO   ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” "smaller reporting company," and “emerging growth company” in Rule 12b-2 of the Exchange Act.

							
Large accelerated filer þ	 	 	 	 	 	Accelerated filer  ¨	
Non-accelerated filer ¨	(Do not check if a smaller reporting company)	Smaller reporting company  ¨	
 	 	 	 	 	 	Emerging growth company  ¨	

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
YES  ¨                                                 NO   þ
The number of registrant’s Common Shares (CHF 24.15 par value) outstanding as of October 20, 2017 was 464,221,986 .

Table of Contents

CHUBB LIMITED
INDEX TO FORM 10-Q

 

				
 	 	 	 	
Part I.	FINANCIAL INFORMATION	Page	
Item 1.	Financial Statements:	 	
 	Consolidated Balance Sheets (Unaudited) September 30, 2017 and December 31, 2016	3	
 	Consolidated Statements of Operations and Comprehensive Income (Unaudited)
Three and Nine Months Ended September 30, 2017 and 2016	4	
 	Consolidated Statements of Shareholders' Equity (Unaudited)
Nine Months Ended September 30, 2017 and 2016	5	
 	Consolidated Statements of Cash Flows (Unaudited)
Nine Months Ended September 30, 2017 and 2016	6	
 	Notes to Consolidated Financial Statements (Unaudited)	 	
 	Note 1.	General	7	
 	Note 2.	Acquisition	8	
 	Note 3.	Investments	9	
 	Note 4.	Fair value measurements	14	
 	Note 5.	Unpaid losses and loss expenses	22	
 	Note 6.	Commitments, contingencies, and guarantees	28	
 	Note 7.	Shareholders’ equity	33	
 	Note 8.	Share-based compensation	34	
 	Note 9.	Postretirement benefits	35	
 	Note 10.	Segment information	36	
 	Note 11.	Earnings per share	38	
 	Note 12.	Information provided in connection with outstanding debt of subsidiaries	39	
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	45	
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	89	
Item 4.	Controls and Procedures	92	
 	 	 	
Part II.	OTHER INFORMATION	 	
Item 1.	Legal Proceedings	92	
Item 1A.	Risk Factors	92	
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds and Issuer Repurchases of Equity Securities	92	
Item 6.	Exhibits	93	

2

Table of Contents

PART I FINANCIAL INFORMATION

	
	
ITEM 1. Financial Statements	

CONSOLIDATED BALANCE SHEETS (Unaudited)
Chubb Limited and Subsidiaries

								
 	September 30		 	December 31		
(in millions of U.S. dollars, except share and per share data)	2017		 	2016		
Assets	 	 	 	
Investments	 	 	 	
Fixed maturities available for sale, at fair value (amortized cost – $82,254   and $79,536 )	$	83,686		 	$	80,115		
      (includes hybrid financial instruments of   nil and $2 )								
Fixed maturities held to maturity, at amortized cost (fair value – $10,365  and $10,670 )	10,160		 	10,644		
Equity securities, at fair value (cost – $723  and $706 )	910		 	814		
Short-term investments, at fair value and amortized cost	2,991		 	3,002		
Other investments (cost – $4,429  and $4,270 )	4,677		 	4,519		
Total investments	102,424		 	99,094		
Cash	1,088		 	985		
Securities lending collateral	1,757		 	1,092		
Accrued investment income	911		 	918		
Insurance and reinsurance balances receivable	9,551		 	8,970		
Reinsurance recoverable on losses and loss expenses	14,799		 	13,577		
Reinsurance recoverable on policy benefits	193		 	182		
Deferred policy acquisition costs	4,691		 	4,314		
Value of business acquired	339		 	355		
Goodwill	15,707		 	15,332		
Other intangible assets	6,558		 	6,763		
Prepaid reinsurance premiums	2,506		 	2,448		
Investments in partially-owned insurance companies	652		 	666		
Other assets	6,402		 	5,090		
Total assets	$	167,578		 	$	159,786		
Liabilities	 	 	 	
Unpaid losses and loss expenses	$	64,153		 	$	60,540		
Unearned premiums	15,456		 	14,779		
Future policy benefits	5,307		 	5,036		
Insurance and reinsurance balances payable	5,827		 	5,637		
Securities lending payable	1,757		 	1,093		
Accounts payable, accrued expenses, and other liabilities	9,173		 	8,617		
Deferred tax liabilities	1,139		 	988		
Repurchase agreements	1,408		 	1,403		
Short-term debt	1,020		 	500		
Long-term debt	11,559		 	12,610		
Trust preferred securities	308		 	308		
Total liabilities	117,107		 	111,511		
Commitments and contingencies		 		
Shareholders’ equity	 	 	 	
Common Shares (CHF 24.15  par value; 479,783,864 shares issued; 464,158,519   and 465,968,716  shares outstanding)	11,121		 	11,121		
Common Shares in treasury (15,625,345  and 13,815,148  shares)	(1,877	)	 	(1,480	)	
Additional paid-in capital	14,217		 	15,335		
Retained earnings	25,941		 	23,613		
Accumulated other comprehensive income (loss) (AOCI)	1,069		 	(314	)	
Total shareholders’ equity	50,471		 	48,275		
Total liabilities and shareholders’ equity	$	167,578		 	$	159,786		
See accompanying notes to the consolidated financial statements

3

Table of Contents

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Unaudited)
Chubb Limited and Subsidiaries

	
																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars, except per share data)	2017		 	2016		 	2017		 	2016		
Revenues	 	 	 	 	 	 	 	
Net premiums written	$	7,902		 	$	7,573		 	$	22,193		 	$	21,207		
Decrease (increase) in unearned premiums	(95	)	 	115		 	(377	)	 	483		
Net premiums earned	7,807		 	7,688		 	21,816		 	21,690		
Net investment income	813		 	739		 	2,328		 	2,121		
Net realized gains (losses):	 	 	 	 	 	 	 	
Other-than-temporary impairment (OTTI) losses gross	(8	)	 	(12	)	 	(36	)	 	(99	)	
Portion of OTTI losses recognized in other comprehensive income (OCI)	—		 	—		 	1		 	8		
Net OTTI losses recognized in income	(8	)	 	(12	)	 	(35	)	 	(91	)	
Net realized gains (losses) excluding OTTI losses	(2	)	 	112		 	119		 	(419	)	
Total net realized gains (losses) (includes $10, $33,   $27, and $(117)  reclassified from AOCI)	(10	)	 	100		 	84		 	(510	)	
Total revenues	8,610		 	8,527		 	24,228		 	23,301		
Expenses	 	 	 	 	 	 	 	
Losses and loss expenses	6,247		 	4,269		 	14,182		 	12,197		
Policy benefits	169		 	155		 	500		 	427		
Policy acquisition costs	1,488		 	1,514		 	4,334		 	4,487		
Administrative expenses	714		 	772		 	2,096		 	2,373		
Interest expense	150		 	152		 	451		 	451		
Other (income) expense	(118	)	 	(91	)	 	(333	)	 	(92	)	
Amortization of purchased intangibles	65		 	4		 	194		 	16		
Chubb integration expenses	50		 	115		 	233		 	361		
Total expenses	8,765		 	6,890		 	21,657		 	20,220		
Income (loss) before income tax	(155	)	 	1,637		 	2,571		 	3,081		
Income tax expense (benefit) (includes nil, $11, $3  and $16  on reclassified unrealized gains and losses)	(85	)	 	277		 	243		 	556		
Net income (loss)	$	(70	)	 	$	1,360		 	$	2,328		 	$	2,525		
Other comprehensive income	 	 	 	 	 	 	 	
Unrealized appreciation	$	153		 	$	247		 	$	919		 	$	2,099		
Reclassification adjustment for net realized (gains) losses included in net income (loss)	(10	)	 	(33	)	 	(27	)	 	117		
 	143		 	214		 	892		 	2,216		
Change in:	 	 	 	 	 	 	 	
Cumulative foreign currency translation adjustment	665		 	(124	)	 	901		 	269		
Postretirement benefit liability adjustment	(63	)	 	5		 	(118	)	 	8		
Other comprehensive income, before income tax	745		 	95		 	1,675		 	2,493		
Income tax expense related to OCI items	(46	)	 	(79	)	 	(292	)	 	(561	)	
Other comprehensive income	699		 	16		 	1,383		 	1,932		
Comprehensive income	$	629		 	$	1,376		 	$	3,711		 	$	4,457		
Earnings (loss) per share	 	 	 	 	 	 	 	
Basic earnings (loss) per share	$	(0.15	)	 	$	2.90		 	$	4.98		 	$	5.48		
Diluted earnings (loss) per share	$	(0.15	)	 	$	2.88		 	$	4.94		 	$	5.44		
See accompanying notes to the consolidated financial statements

4

Table of Contents

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited)
Chubb Limited and Subsidiaries

	
								
 	Nine Months Ended	 	
 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		
Common Shares	 	 	 	
Balance – beginning of period	$	11,121		 	$	7,833		
Shares issued for Chubb Corp acquisition	—		 	3,288		
Balance – end of period	11,121		 	11,121		
Common Shares in treasury	 	 	 	
Balance – beginning of period	(1,480	)	 	(1,922	)	
Common Shares repurchased	(707	)	 	—		
Net shares redeemed under employee share-based compensation plans	310		 	372		
Balance – end of period	(1,877	)	 	(1,550	)	
Additional paid-in capital	 	 	 	
Balance – beginning of period	15,335		 	4,481		
Shares issued for Chubb Corp acquisition	—		 	11,916		
Equity awards assumed in Chubb Corp acquisition	—		 	323		
Net shares redeemed under employee share-based compensation plans	(311	)	 	(365	)	
Exercise of stock options	(43	)	 	(44	)	
Share-based compensation expense and other	223		 	250		
Funding of dividends declared to Retained earnings	(987	)	 	(960	)	
Balance – end of period	14,217		 	15,601		
Retained earnings	 	 	 	
Balance – beginning of period	23,613		 	19,478		
Net income	2,328		 	2,525		
Funding of dividends declared from Additional paid-in capital	987		 	960		
Dividends declared on Common Shares	(987	)	 	(960	)	
Balance – end of period	25,941		 	22,003		
Accumulated other comprehensive income	 	 	 	
Net unrealized appreciation on investments	 	 	 	
Balance – beginning of period	1,058		 	874		
Change in period, before reclassification from AOCI, net of income tax
    expense of $(310)  and $(559)	609		 	1,540		
Amounts reclassified from AOCI, net of income tax benefit of $3  and $16	(24	)	 	133		
Change in period, net of income tax expense of $(307)  and $(543)	585		 	1,673		
Balance – end of period	1,643		 	2,547		
Cumulative foreign currency translation adjustment	 	 	 	
Balance – beginning of period	(1,663	)	 	(1,539	)	
Change in period, net of income tax expense of $(14)  and $(18)	887		 	251		
Balance – end of period	(776	)	 	(1,288	)	
Postretirement benefit liability adjustment	 	 	 	
Balance – beginning of period	291		 	(70	)	
Change in period, net of income tax benefit of $29 and nil	(89	)	 	8		
Balance – end of period	202		 	(62	)	
Accumulated other comprehensive income	1,069		 	1,197		
Total shareholders’ equity	$	50,471		 	$	48,372		
See accompanying notes to the consolidated financial statements

5

Table of Contents

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)
Chubb Limited and Subsidiaries

	
								
 	Nine Months Ended September 30	 	
(in millions of U.S. dollars)	2017		 	2016		
Cash flows from operating activities	 	 	 	
Net income	$	2,328		 	$	2,525		
Adjustments to reconcile net income to net cash flows from operating activities		 		
Net realized (gains) losses	(84	)	 	510		
Amortization of premiums/discounts on fixed maturities	526		 	558		
Amortization of UPR related to the Chubb Corp acquisition	—		 	1,415		
Deferred income taxes	(151	)	 	(13	)	
Unpaid losses and loss expenses	2,789		 	916		
Unearned premiums	340		 	(547	)	
Future policy benefits	186		 	129		
Insurance and reinsurance balances payable	247		 	149		
Accounts payable, accrued expenses, and other liabilities	(828	)	 	(109	)	
Income taxes payable	(262	)	 	308		
Insurance and reinsurance balances receivable	(339	)	 	(201	)	
Reinsurance recoverable on losses and loss expenses	(976	)	 	(241	)	
Reinsurance recoverable on policy benefits	(10	)	 	(6	)	
Deferred policy acquisition costs	(256	)	 	(1,316	)	
Prepaid reinsurance premiums	(14	)	 	33		
Other	(85	)	 	(273	)	
Net cash flows from operating activities	3,411		 	3,837		
Cash flows from investing activities	 	 	 	
Purchases of fixed maturities available for sale	(18,478	)	 	(23,837	)	
Purchases of fixed maturities held to maturity	(262	)	 	(189	)	
Purchases of equity securities	(125	)	 	(100	)	
Sales of fixed maturities available for sale	9,215		 	13,863		
Sales of equity securities	152		 	963		
Maturities and redemptions of fixed maturities available for sale	7,699		 	6,936		
Maturities and redemptions of fixed maturities held to maturity	644		 	627		
Net change in short-term investments	44		 	11,866		
Net derivative instruments settlements	(170	)	 	(181	)	
Acquisition of subsidiaries (net of cash acquired of nil and $71)	—		 	(14,248	)	
Other	(62	)	 	26		
Net cash flows used for investing activities	(1,343	)	 	(4,274	)	
Cash flows from financing activities	 	 	 	
Dividends paid on Common Shares	(978	)	 	(851	)	
Common Shares repurchased	(707	)	 	—		
Repayment of long-term debt
	(500	)	 	—		
Proceeds from issuance of repurchase agreements	1,798		 	1,457		
Repayment of repurchase agreements	(1,793	)	 	(1,455	)	
Proceeds from share-based compensation plans	109		 	117		
Policyholder contract deposits	312		 	473		
Policyholder contract withdrawals	(211	)	 	(247	)	
Other	—		 	(4	)	
Net cash flows used for financing activities	(1,970	)	 	(510	)	
Effect of foreign currency rate changes on cash and cash equivalents	5		 	42		
Net increase (decrease) in cash	103		 	(905	)	
Cash – beginning of period	985		 	1,775		
Cash – end of period	$	1,088		 	$	870		
Supplemental cash flow information	 	 	 	
Taxes paid	$	652		 	$	360		
Interest paid	$	404		 	$	390		
See accompanying notes to the consolidated financial statements

6

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
Chubb Limited and Subsidiaries

1 . General

a) Basis of presentation
Chubb Limited is a holding company incorporated in Zurich, Switzerland. Chubb Limited, through its subsidiaries, provides a broad range of insurance and reinsurance products to insureds worldwide. Chubb operates through the following business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. Refer to Note 10 for additional information.

The interim unaudited consolidated financial statements, which include the accounts of Chubb Limited and its subsidiaries (collectively, Chubb, we, us, or our), have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) and, in the opinion of management, reflect all adjustments (consisting of normally recurring accruals) necessary for a fair statement of the results and financial position for such periods. All significant intercompany accounts and transactions, including internal reinsurance transactions, have been eliminated.

The results of operations and cash flows for any interim period are not necessarily indicative of the results for the full year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our 2016 Form 10-K.

b) Goodwill
During the nine months ended September 30, 2017, Goodwill increased $ 375 million , primarily reflecting the impact of foreign exchange.

c) Debt
In February 2017, Chubb INA Holdings Inc.’s $ 500 million of 5.7 percent senior notes matured and were fully paid. In 2017, we reclassified $ 300 million of the 5.8 percent senior notes ( $300 million par value due to mature in March 2018), $ 616 million of the 5.75 percent senior notes ( $600 million par value due to mature in May 2018), and $ 104 million of the 6.6 percent senior notes ( $100 million par value due to mature in August 2018), from Long-term debt to Short-term debt in the Consolidated balance sheets.

Effective April 15, 2017, the interest rate on our $ 1.0 billion of unsecured junior subordinated capital securities converted to a floating rate, equal to the three-month LIBOR plus 2.25 percentage points. Previously, these capital securities carried interest at a rate of 6.375 percent. The current interest rate, at the time of this filing, on these securities is 3.61 percent. The scheduled maturity date for these securities is April 15, 2037.

d) Accounting guidance adopted in 2017

Stock Compensation
Effective January 2017, we prospectively adopted new guidance on stock compensation which requires recognition of the excess tax benefits or deficiencies of share-based compensation awards to employees through net income rather than through additional paid in capital. The calculation of the excess tax benefits or deficiencies is based on the difference between the market value of a stock award at the date of vesting, or at the time of exercise for a stock option, compared to the grant date fair value recognized as compensation expense in the Consolidated statements of operations. For the three and nine months ended September 30, 2017, the excess tax benefit recorded to Income tax expense in the Consolidated statement of operations was $ 14 million and $44 million , respectively. Additionally, the guidance allowed for an election to account for forfeitures related to share-based payments either as they occur or through an estimation method. We elected to retain our current accounting for compensation expense using a forfeiture estimation process.
  
e) Accounting guidance not yet adopted

Goodwill Impairment
In January 2017, the FASB issued updated guidance on goodwill impairment testing that eliminates Step 2 of the goodwill impairment test requiring entities to calculate the implied fair value of goodwill through a hypothetical purchase price allocation. Under the updated guidance, impairment will now be recognized as the amount by which a reporting unit’s carrying value exceeds its fair value. The standard will be effective for us in the first quarter of 2020 on a prospective basis with early adoption permitted. We do not expect the adoption of this guidance to have a material effect on our financial condition and results of operations.

7

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Premium Amortization on Purchased Callable Debt Securities
In March 2017, the FASB issued guidance on the amortization period for purchased callable debt securities held at a premium. The guidance requires the premium to be amortized to the earliest call date. Under current guidance, premiums generally are amortized over the contracted life of the security. This guidance is effective for us in the first quarter of 2019 on a modified retrospective basis through a cumulative effect adjustment to beginning retained earnings. Early adoption is permitted. Securities held at a discount do not require an accounting change. We are in the process of evaluating the effect the updated guidance will have on our financial condition and results of operations.

Refer to the 2016 Form 10-K for information on other accounting guidance not yet adopted.

2 . Acquisition

The Chubb Corporation (Chubb Corp)
On January 14, 2016, we completed the acquisition of Chubb Corp, a leading provider of middle-market commercial, specialty, surety, and personal insurance for $29.5 billion , comprising $14.3 billion in cash and $15.2 billion in newly-issued stock. In addition, we assumed outstanding equity awards to employees and directors with an attributed value of $323 million . The total consideration, including the assumption of equity awards, was $29.8 billion . We recognized goodwill of $ 10.5 billion , attributable to expected growth and profitability, none of which is expected to be deductible for income tax purposes. Refer to the 2016 Form 10-K for additional information on this acquisition.

The consolidated financial statements include the results of Chubb Corp from the acquisition date.

The following table summarizes the results of the acquired Chubb Corp operations within our 2016 Consolidated statements of operations for the periods presented: 

								
(in millions of U.S. dollars)	Three Months Ended September 30, 2016		 	January 14, 2016 to September 30, 2016		
Total revenues	$	2,656		 	$	7,888		
Net income	$	483		 	$	1,064		

The following table provides supplemental unaudited pro forma consolidated information for the three and nine months ended September 30, 2016 , as if Chubb Corp had been acquired as of January 1, 2015. The unaudited pro forma consolidated financial statements are presented solely for informational purposes and are not necessarily indicative of the consolidated results of operations that might have been achieved had the transaction been completed as of the date indicated, nor are they meant to be indicative of any anticipated consolidated future results of operations that the combined company will experience after the transaction. 

								
Three Months Ended	 	 	Nine Months Ended		
(in millions of U.S. dollars, except per share data)	September 30, 2016		 	September 30, 2016		
Total revenues	$	8,521		 	$	23,758		
Net income	$	1,345		 	$	2,591		
Earnings per share	 	 	 	
Basic earnings per share	$	2.87		 	$	5.54		
Diluted earnings per share	$	2.85		 	$	5.50		

8

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

3 . Investments

a) Fixed maturities

	
																				
September 30, 2017	Amortized
Cost		 	Gross
Unrealized
Appreciation		 	Gross
Unrealized
Depreciation		 	Fair
Value		 	OTTI Recognized
in AOCI		
(in millions of U.S. dollars)			 			 			 			 			
Available for sale	 	 	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	3,571		 	$	38		 	$	(27	)	 	$	3,582		 	$	—		
Foreign	22,516		 	690		 	(107	)	 	23,099		 	(2	)	
Corporate securities	24,555		 	754		 	(83	)	 	25,226		 	(4	)	
Mortgage-backed securities	15,369		 	157		 	(115	)	 	15,411		 	(1	)	
States, municipalities, and political subdivisions	16,243		 	172		 	(47	)	 	16,368		 	—		
 	$	82,254		 	$	1,811		 	$	(379	)	 	$	83,686		 	$	(7	)	
Held to maturity	 	 	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	611		 	$	13		 	$	(3	)	 	$	621		 	$	—		
Foreign	616		 	28		 	—		 	644		 	—		
Corporate securities	2,531		 	63		 	(5	)	 	2,589		 	—		
Mortgage-backed securities	1,223		 	35		 	—		 	1,258		 	—		
States, municipalities, and political subdivisions	5,179		 	77		 	(3	)	 	5,253		 	—		
 	$	10,160		 	$	216		 	$	(11	)	 	$	10,365		 	$	—		

	
																				
December 31, 2016	Amortized
Cost		 	Gross
Unrealized
Appreciation		 	Gross
Unrealized
Depreciation		 	Fair
Value		 	OTTI Recognized
in AOCI		
(in millions of U.S. dollars)			 			 			 			 			
Available for sale	 	 	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	2,883		 	$	32		 	$	(45	)	 	$	2,870		 	$	—		
Foreign	20,929		 	636		 	(125	)	 	21,440		 	(5	)	
Corporate securities	23,736		 	580		 	(167	)	 	24,149		 	(8	)	
Mortgage-backed securities	14,066		 	135		 	(194	)	 	14,007		 	(1	)	
States, municipalities, and political subdivisions	17,922		 	72		 	(345	)	 	17,649		 	—		
 	$	79,536		 	$	1,455		 	$	(876	)	 	$	80,115		 	$	(14	)	
Held to maturity	 	 	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	655		 	$	9		 	$	(3	)	 	$	661		 	$	—		
Foreign	640		 	28		 	(1	)	 	667		 	—		
Corporate securities	2,771		 	50		 	(26	)	 	2,795		 	—		
Mortgage-backed securities	1,393		 	35		 	—		 	1,428		 	—		
States, municipalities, and political subdivisions	5,185		 	26		 	(92	)	 	5,119		 	—		
 	$	10,644		 	$	148		 	$	(122	)	 	$	10,670		 	$	—		

As discussed in Note 3 c ), if a credit loss is incurred on an impaired fixed maturity, an OTTI is considered to have occurred and the portion of the impairment not related to credit losses (non-credit OTTI) is recognized in OCI. Included in the “OTTI Recognized in AOCI” columns above are the cumulative amounts of non-credit OTTI recognized in OCI adjusted for subsequent sales, maturities, and redemptions. OTTI recognized in AOCI does not include the impact of subsequent changes in fair value of the related securities. In periods subsequent to a recognition of OTTI in OCI, changes in the fair value of the related fixed maturities are reflected in Net unrealized appreciation on investments in the Consolidated statements of shareholders’ equity. For the three and nine months ended September 30, 2017 , $1 million of net unrealized appreciation and $ 2 million of net unrealized depreciation, respectively, related to such securities is included in OCI. For the three and nine months ended September 30, 2016 , $13 million and $ 57 million , respectively, of net unrealized appreciation related to such securities is

9

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

included in OCI. At September 30, 2017 and December 31, 2016 , AOCI included cumulative net unrealized appreciation of $7 million and $10 million , respectively, related to securities remaining in the investment portfolio for which a non-credit OTTI was recognized.

Mortgage-backed securities (MBS) issued by U.S. government agencies are combined with all other to be announced mortgage-backed securities (TBAs) held (refer to Note 6 c) (iv)) and are included in the category, “Mortgage-backed securities”. Approximately 82 percent and 81 percent of the total mortgage-backed securities at September 30, 2017 and December 31, 2016 , respectively, are represented by investments in U.S. government agency bonds. The remainder of the mortgage exposure consists of collateralized mortgage obligations and non-government mortgage-backed securities, the majority of which provide a planned structure for principal and interest payments and carry a rating of AAA by the major credit rating agencies.

The following table presents fixed maturities by contractual maturity:

																
 	 	 	September 30		 	 	 	December 31		
 	 	 	2017		 	 	 	2016		
(in millions of U.S. dollars)	Amortized Cost		 	Fair Value		 	Amortized Cost		 	Fair Value		
Available for sale	 	 	 	 	 	 	 	
Due in 1 year or less	$	3,532		 	$	3,556		 	$	3,892		 	$	3,913		
Due after 1 year through 5 years	24,918		 	25,397		 	24,027		 	24,429		
Due after 5 years through 10 years	28,009		 	28,488		 	27,262		 	27,379		
Due after 10 years	10,426		 	10,834		 	10,289		 	10,387		
 	66,885		 	68,275		 	65,470		 	66,108		
Mortgage-backed securities	15,369		 	15,411		 	14,066		 	14,007		
 	$	82,254		 	$	83,686		 	$	79,536		 	$	80,115		
Held to maturity	 	 	 	 	 	 	 	
Due in 1 year or less	$	822		 	$	828		 	$	430		 	$	435		
Due after 1 year through 5 years	2,479		 	2,524		 	2,646		 	2,691		
Due after 5 years through 10 years	2,821		 	2,866		 	2,969		 	2,944		
Due after 10 years	2,815		 	2,889		 	3,206		 	3,172		
 	8,937		 	9,107		 	9,251		 	9,242		
Mortgage-backed securities	1,223		 	1,258		 	1,393		 	1,428		
 	$	10,160		 	$	10,365		 	$	10,644		 	$	10,670		

Expected maturities could differ from contractual maturities because borrowers may have the right to call or prepay obligations, with or without call or prepayment penalties. 

b) Equity securities

								
	September 30			December 31		
(in millions of U.S. dollars)	2017			2016		
Cost	$	723		 	$	706		
Gross unrealized appreciation	195		 	129		
Gross unrealized depreciation	(8	)	 	(21	)	
Fair value	$	910		 	$	814		

c ) Net realized gains (losses)
In accordance with guidance related to the recognition and presentation of OTTI, when an impairment related to a fixed maturity has occurred, OTTI is required to be recorded in Net income if management has the intent to sell the security or it is more likely than not that we will be required to sell the security before the recovery of its amortized cost. Further, in cases where we do not intend to sell the security and it is more likely than not that we will not be required to sell the security, we must evaluate the security to determine the portion of the impairment, if any, related to credit losses. If a credit loss is incurred, an OTTI is

10

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

considered to have occurred and any portion of the OTTI related to credit losses must be reflected in Net income while the portion of OTTI related to all other factors is recognized in OCI. For fixed maturities held to maturity, OTTI recognized in OCI is accreted from AOCI to the amortized cost of the fixed maturity prospectively over the remaining term of the securities.

Each quarter, securities in an unrealized loss position (impaired securities), including fixed maturities, securities lending collateral, equity securities, and other investments, are reviewed to identify impaired securities to be specifically evaluated for a potential OTTI.

For all non-fixed maturities, OTTI is evaluated based on the following:

•	the amount of time a security has been in a loss position and the magnitude of the loss position;	
		
•	the period in which cost is expected to be recovered, if at all, based on various criteria including economic conditions and other issuer-specific developments; and	
		
•	our ability and intent to hold the security to the expected recovery period.	

As a general rule, we also consider that equity securities in an unrealized loss position for twelve consecutive months are other than temporarily impaired. For mutual funds included in equity securities in our Consolidated balance sheets, we employ analysis similar to fixed maturities, when applicable.

Evaluation of potential credit losses related to fixed maturities
We review each fixed maturity in an unrealized loss position to assess whether the security is a candidate for credit loss. Specifically, we consider credit rating, market price, and issuer-specific financial information, among other factors, to assess the likelihood of collection of all principal and interest as contractually due. Securities for which we determine that credit loss is likely are subjected to further analysis to estimate the credit loss recognized in Net income, if any. In general, credit loss recognized in Net income equals the difference between the security’s amortized cost and the net present value of its projected future cash flows discounted at the effective interest rate implicit in the debt security. All significant assumptions used in determining credit losses are subject to change as market conditions evolve.

Corporate securities
Projected cash flows for corporate securities (principally senior unsecured bonds) are driven primarily by assumptions regarding probability of default and also the timing and amount of recoveries associated with defaults. Chubb developed projected cash flows for corporate securities using market observable data, issuer-specific information, and credit ratings. We use historical default data by Moody’s Investors Service (Moody’s) rating category to calculate a 1-in-100 year probability of default, which results in a default assumption in excess of the historical mean default rate. Consistent with management's approach, Chubb assumed a 32 percent recovery rate (the par value of a defaulted security that will be recovered) across all rating categories rather than using Moody's historical mean recovery rate of 42 percent. We believe that use of a default assumption in excess of the historical mean is conservative in light of current market conditions.

For the three and nine months ended September 30, 2017 , credit losses recognized in Net income for corporate securities were $3 million and $ 5 million , respectively. For the three and nine months ended September 30, 2016 , credit losses recognized in Net income for corporate securities were $4 million and $ 28 million , respectively.

Mortgage-backed securities
For mortgage-backed securities, credit impairment is assessed using a cash flow model that estimates the cash flows on the underlying mortgages, using the security-specific collateral and transaction structure. The model estimates cash flows from the underlying mortgage loans and distributes those cash flows to various tranches of securities, considering the transaction structure and any subordination and credit enhancements that exist in that structure. The cash flow model incorporates actual cash flows on the mortgage-backed securities through the current period and then projects the remaining cash flows using a number of assumptions, including default rates, prepayment rates, and loss severity rates (the par value of a defaulted security that will not be recovered) on foreclosed properties.

For the three and nine months ended September 30, 2017 , there were no credit losses recognized in Net income for mortgage-backed securities. For the three and nine months ended September 30, 2016 , there were $1 million in credit losses recognized in Net income for mortgage-backed securities.

11

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The following table presents the Net realized gains (losses) and the losses included in Net realized gains (losses) and OCI as a result of conditions which caused us to conclude the decline in fair value of certain investments was “other-than-temporary”:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		 	2017		 	2016		
Fixed maturities:	 	 	 	 	 	 	 	
OTTI on fixed maturities, gross	$	(5	)	 	$	(7	)	 	$	(16	)	 	$	(85	)	
OTTI on fixed maturities recognized in OCI (pre-tax)	—		 	—		 	1		 	8		
OTTI on fixed maturities, net	(5	)	 	(7	)	 	(15	)	 	(77	)	
Gross realized gains excluding OTTI	30		 	47		 	109		 	149		
Gross realized losses excluding OTTI	(19	)	 	(13	)	 	(77	)	 	(228	)	
Total fixed maturities	6		 	27		 	17		 	(156	)	
Equity securities:	 	 	 	 	 	 	 	
OTTI on equity securities	(1	)	 	(1	)	 	(9	)	 	(7	)	
Gross realized gains excluding OTTI	6		 	19		 	21		 	63		
Gross realized losses excluding OTTI	(1	)	 	(12	)	 	(2	)	 	(17	)	
Total equity securities	4		 	6		 	10		 	39		
OTTI on other investments	(2	)	 	(4	)	 	(11	)	 	(7	)	
Foreign exchange gains	15		 	29		 	10		 	46		
Investment and embedded derivative instruments	(14	)	 	1		 	(24	)	 	(85	)	
Fair value adjustments on insurance derivative	54		 	89		 	265		 	(270	)	
S&P put options and futures	(57	)	 	(45	)	 	(169	)	 	(88	)	
Other derivative instruments	(5	)	 	3		 	(4	)	 	1		
Other	(11	)	 	(6	)	 	(10	)	 	10		
Net realized gains (losses)	$	(10	)	 	$	100		 	$	84		 	$	(510	)	
 
The following table presents a roll-forward of pre-tax credit losses related to fixed maturities for which a portion of OTTI was recognized in OCI:  

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		 	2017		 	2016		
Balance of credit losses related to securities still held – beginning of period	$	29		 	$	51		 	$	35		 	$	53		
Additions where no OTTI was previously recorded	2		 	4		 	3		 	16		
Additions where an OTTI was previously recorded	1		 	1		 	2		 	13		
Reductions for securities sold during the period	(7	)	 	(11	)	 	(15	)	 	(37	)	
Balance of credit losses related to securities still held – end of period	$	25		 	$	45		 	$	25		 	$	45		

d) Gross unrealized loss
At September 30, 2017 , there were 7,455 fixed maturities out of a total of 30,933 fixed maturities in an unrealized loss position. The largest single unrealized loss in the fixed maturities was $7 million . There were 59 equity securities out of a total of 317 equity securities in an unrealized loss position. The largest single unrealized loss in the equity securities was $1 million . Fixed maturities in an unrealized loss position at September 30, 2017 , comprised both investment grade and below investment grade securities for which fair value declined primarily due to widening credit spreads since the date of purchase.

12

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The following tables present, for all securities in an unrealized loss position (including securities on loan), the aggregate fair value and gross unrealized loss by length of time the security has continuously been in an unrealized loss position:

																								
 	0 – 12 Months	 	 	Over 12 Months	 	 	Total	 	
September 30, 2017	Fair Value		 	Gross
Unrealized
Loss		 	Fair Value		 	Gross
Unrealized
Loss		 	Fair Value		 	Gross
Unrealized
Loss		
(in millions of U.S. dollars)			 			 			 			 			 			
U.S. Treasury and agency	$	1,763		 	$	(13	)	 	$	656		 	$	(17	)	 	$	2,419		 	$	(30	)	
Foreign	5,353		 	(85	)	 	894		 	(22	)	 	6,247		 	(107	)	
Corporate securities	3,373		 	(48	)	 	788		 	(40	)	 	4,161		 	(88	)	
Mortgage-backed securities	6,946		 	(96	)	 	749		 	(19	)	 	7,695		 	(115	)	
States, municipalities, and political subdivisions	4,548		 	(28	)	 	839		 	(22	)	 	5,387		 	(50	)	
Total fixed maturities	21,983		 	(270	)	 	3,926		 	(120	)	 	25,909		 	(390	)	
Equity securities	103		 	(8	)	 	—		 	—		 	103		 	(8	)	
Other investments	157		 	(9	)	 	—		 	—		 	157		 	(9	)	
Total	$	22,243		 	$	(287	)	 	$	3,926		 	$	(120	)	 	$	26,169		 	$	(407	)	

																								
 	0 – 12 Months	 	 	Over 12 Months	 	 	Total	 	
December 31, 2016	Fair Value		 	Gross
Unrealized
Loss		 	Fair Value		 	Gross
Unrealized
Loss		 	Fair Value		 	Gross
Unrealized
Loss		
(in millions of U.S. dollars)			 			 			 			 			 			
U.S. Treasury and agency	$	2,216		 	$	(48	)	 	$	—		 	$	—		 	$	2,216		 	$	(48	)	
Foreign	5,918		 	(99	)	 	386		 	(27	)	 	6,304		 	(126	)	
Corporate securities	7,021		 	(149	)	 	641		 	(44	)	 	7,662		 	(193	)	
Mortgage-backed securities	8,638		 	(189	)	 	234		 	(5	)	 	8,872		 	(194	)	
States, municipalities, and political subdivisions	19,448		 	(435	)	 	49		 	(2	)	 	19,497		 	(437	)	
Total fixed maturities	43,241		 	(920	)	 	1,310		 	(78	)	 	44,551		 	(998	)	
Equity securities	199		 	(21	)	 	—		 	—		 	199		 	(21	)	
Other investments	201		 	(18	)	 	—		 	—		 	201		 	(18	)	
Total	$	43,641		 	$	(959	)	 	$	1,310		 	$	(78	)	 	$	44,951		 	$	(1,037	)	

e) Restricted assets
Chubb is required to maintain assets on deposit with various regulatory authorities to support its insurance and reinsurance operations. These requirements are generally promulgated in the statutory regulations of the individual jurisdictions. The assets on deposit are available to settle insurance and reinsurance liabilities. Chubb is also required to restrict assets pledged under repurchase agreements, which represent Chubb's agreement to sell securities and repurchase them at a future date for a predetermined price. We also use trust funds in certain large reinsurance transactions where the trust funds are set up for the benefit of the ceding companies and generally take the place of letter of credit (LOC) requirements. We also have investments in segregated portfolios primarily to provide collateral or guarantees for LOC and derivative transactions. Included in restricted assets at September 30, 2017 and December 31, 2016 are investments, primarily fixed maturities, totaling $22.8 billion and $20.1 billion, respectively, and cash of $105 million and $103 million, respectively.
The following table presents the components of restricted assets: 

								
 	September 30		 	December 31		
(in millions of U.S. dollars)	2017		 	2016		
Trust funds	$	16,391		 	$	13,880		
Deposits with U.S. regulatory authorities	2,361		 	2,203		
Deposits with non-U.S. regulatory authorities	2,294		 	2,191		
Assets pledged under repurchase agreements	1,441		 	1,461		
Other pledged assets	377		 	435		
 	$	22,864		 	$	20,170		

13

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

4 . Fair value measurements

a ) Fair value hierarchy
Fair value of financial assets and financial liabilities is estimated based on the framework established in the fair value accounting guidance. The guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data.

The three levels of the hierarchy are as follows:

•	Level 1 – Unadjusted quoted prices for identical assets or liabilities in active markets;	
		
•	Level 2 – Includes, among other items, inputs other than quoted prices that are observable for the asset or liability such as	
interest rates and yield curves, quoted prices for similar assets and liabilities in active markets, and quoted prices for identical or similar assets and liabilities in markets that are not active; and
		
•	Level 3 – Inputs that are unobservable and reflect management’s judgments about assumptions that market participants	
would use in pricing an asset or liability.

We categorize financial instruments within the valuation hierarchy at the balance sheet date based upon the lowest level of inputs that are significant to the fair value measurement. Accordingly, transfers between levels within the valuation hierarchy occur when there are significant changes to the inputs, such as increases or decreases in market activity, changes to the availability of current prices, changes to the transparency to underlying inputs, and whether there are significant variances in quoted prices. Transfers in and/or out of any level are assumed to occur at the end of the period.

We use pricing services to obtain fair value measurements for the majority of our investment securities. Based on management’s understanding of the methodologies used, these pricing services only produce an estimate of fair value if there is observable market information that would allow them to make a fair value estimate. Based on our understanding of the market inputs used by the pricing services, all applicable investments have been valued in accordance with GAAP. We do not adjust prices obtained from pricing services. The following is a description of the valuation techniques and inputs used to determine fair values for financial instruments carried at fair value, as well as the general classification of such financial instruments pursuant to the valuation hierarchy.

Fixed maturities
We use pricing services to estimate fair value measurements for the majority of our fixed maturities. The pricing services use market quotations for fixed maturities that have quoted prices in active markets; such securities are classified within Level 1. For fixed maturities other than U.S. Treasury securities that generally do not trade on a daily basis, the pricing services prepare estimates of fair value measurements using their pricing applications, which include available relevant market information, benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing. Additional valuation factors that can be taken into account are nominal spreads, dollar basis, and liquidity adjustments. The pricing services evaluate each asset class based on relevant market and credit information, perceived market movements, and sector news. The market inputs used in the pricing evaluation, listed in the approximate order of priority include: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, reference data, and industry and economic events. The extent of the use of each input is dependent on the asset class and the market conditions. Given the asset class, the priority of the use of inputs may change, or some market inputs may not be relevant. Additionally, fixed maturities valuation is more subjective when markets are less liquid due to the lack of market based inputs (i.e., stale pricing), which may increase the potential that an investment's estimated fair value is not reflective of the price at which an actual transaction would occur. The overwhelming majority of fixed maturities are classified within Level 2 because the most significant inputs used in the pricing techniques are observable. For a small number of fixed maturities, we obtain a single broker quote (typically from a market maker). Due to the disclaimers on the quotes that indicate that the price is indicative only, we include these fair value estimates in Level 3. 

Equity securities
Equity securities with active markets are classified within Level 1 as fair values are based on quoted market prices. For equity securities in markets which are less active, fair values are based on market valuations and are classified within Level 2. Equity securities for which pricing is unobservable are classified within Level 3.

14

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Short-term investments
Short-term investments, which comprise securities due to mature within one year of the date of purchase that are traded in active markets, are classified within Level 1 as fair values are based on quoted market prices. Securities such as commercial paper and discount notes are classified within Level 2 because these securities are typically not actively traded due to their approaching maturity and, as such, their cost approximates fair value. Short-term investments for which pricing is unobservable are classified within Level 3.

Other investments
Fair values for the majority of Other investments including investments in partially-owned investment companies, investment funds, and limited partnerships are based on their respective net asset values or equivalent (NAV) and are excluded from the fair value hierarchy table below. Certain of our long-duration contracts are supported by assets that do not qualify for separate account reporting under GAAP. These assets comprise mutual funds classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Other investments also include equity securities classified within Level 1, and fixed maturities, classified within Level 2, held in rabbi trusts maintained by Chubb for deferred compensation plans and are classified within the valuation hierarchy on the same basis as other equity securities and fixed maturities. Other investments for which pricing is unobservable are classified within Level 3.

Securities lending collateral
The underlying assets included in Securities lending collateral in the Consolidated balance sheets are fixed maturities which are classified in the valuation hierarchy on the same basis as other fixed maturities. Excluded from the valuation hierarchy is the corresponding liability related to Chubb’s obligation to return the collateral plus interest as it is reported at contract value and not fair value in the Consolidated balance sheets.

Investment derivative instruments
Actively traded investment derivative instruments, including futures, options, and forward contracts are classified within Level 1 as fair values are based on quoted market prices. The fair value of cross-currency swaps is based on market valuations and is classified within Level 2. Investment derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Other derivative instruments
We generally maintain positions in other derivative instruments including exchange-traded equity futures contracts designed to limit exposure to a severe equity market decline, which would cause an increase in expected claims and, therefore, an increase in reserves for our guaranteed minimum death benefits (GMDB) and guaranteed living benefits (GLB) reinsurance business. Our position in exchange-traded equity futures contracts is classified within Level 1. The fair value of the majority of the remaining positions in other derivative instruments is based on significant observable inputs including equity security and interest rate indices. Accordingly, these are classified within Level 2. Other derivative instruments based on unobservable inputs are classified within Level 3. Other derivative instruments are recorded in either Other assets or Accounts payable, accrued expenses, and other liabilities in the Consolidated balance sheets.

Separate account assets
Separate account assets represent segregated funds where investment risks are borne by the customers, except to the extent of certain guarantees made by Chubb. Separate account assets comprise mutual funds classified within Level 1 in the valuation hierarchy on the same basis as other equity securities traded in active markets. Separate account assets also include fixed maturities classified within Level 2 because the most significant inputs used in the pricing techniques are observable. Excluded from the valuation hierarchy are the corresponding liabilities as they are reported at contract value and not fair value in the Consolidated balance sheets. Separate account assets are recorded in Other assets in the Consolidated balance sheets.

Guaranteed living benefits
The GLB arises from life reinsurance programs covering living benefit guarantees whereby we assume the risk of guaranteed minimum income benefits (GMIB) and guaranteed minimum accumulation benefits (GMAB) associated with variable annuity contracts. GLB’s are recorded in Accounts payable, accrued expenses, and other liabilities and Future policy benefits in the Consolidated balance sheets. For GLB reinsurance, Chubb estimates fair value using an internal valuation model which includes current market information and estimates of policyholder behavior. All of the treaties contain claim limits, which are factored into the valuation model. The fair value depends on a number of factors, including interest rates, equity markets, credit risk, current account value, market volatility, expected annuitization rates and other policyholder behavior, and changes in policyholder mortality.

15

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The most significant policyholder behavior assumptions include lapse rates and the GMIB annuitization rates. Assumptions regarding lapse rates and GMIB annuitization rates differ by treaty, but the underlying methodologies to determine rates applied to each treaty are comparable.

A lapse rate is the percentage of in-force policies surrendered in a given calendar year. All else equal, as lapse rates increase, ultimate claim payments will decrease.

The GMIB annuitization rate is the percentage of policies for which the policyholder will elect to annuitize using the guaranteed benefit provided under the GMIB. All else equal, as GMIB annuitization rates increase, ultimate claim payments will increase, subject to treaty claim limits.

The effect of changes in key market factors on assumed lapse and annuitization rates reflect emerging trends using data available from cedants. For treaties with limited experience, rates are established in line with data received from other ceding companies adjusted, as appropriate, with industry estimates. The model and related assumptions are regularly re-evaluated by management and enhanced, as appropriate, based upon additional experience obtained related to policyholder behavior and availability of updated information such as market conditions, market participant assumptions, and demographics of in-force annuities. Because of the significant use of unobservable inputs including policyholder behavior, GLB reinsurance is classified within Level 3. During the nine months ended September 30, 2017, we updated aspects of our valuation model relating to interest rates. This resulted in a decrease to the fair value of GLB liabilities generating a realized gain of approximately $ 94 million . During the nine months ended September 30, 2017, there were no other material changes to actuarial or behavioral assumptions. For detailed information on our lapse and annuitization rate assumptions, refer to Note 4 to the Consolidated Financial Statements of our 2016 Form 10-K.

Financial instruments measured at fair value on a recurring basis, by valuation hierarchy 

																
September 30, 2017	Level 1		 	Level 2		 	Level 3		 	Total		
(in millions of U.S. dollars)			 			 			 			
Assets:	 	 	 	 	 	 	 	
Fixed maturities available for sale	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	2,941		 	$	641		 	$	—		 	$	3,582		
Foreign	—		 	23,009		 	90		 	23,099		
Corporate securities	—		 	24,307		 	919		 	25,226		
Mortgage-backed securities	—		 	15,367		 	44		 	15,411		
States, municipalities, and political subdivisions	—		 	16,368		 	—		 	16,368		
 	2,941		 	79,692		 	1,053		 	83,686		
Equity securities	858		 	—		 	52		 	910		
Short-term investments	1,804		 	1,187		 	—		 	2,991		
Other investments (1)	446		 	292		 	252		 	990		
Securities lending collateral	—		 	1,757		 	—		 	1,757		
Investment derivative instruments	15		 	—		 	—		 	15		
Separate account assets	2,414		 	100		 	—		 	2,514		
Total assets measured at fair value (1)	$	8,478		 	$	83,028		 	$	1,357		 	$	92,863		
Liabilities:	 	 	 	 	 	 	 	
Investment derivative instruments	$	37		 	$	—		 	$	—		 	$	37		
Other derivative instruments	25		 	—		 	2		 	27		
GLB (2)	—		 	—		 	303		 	303		
Total liabilities measured at fair value	$	62		 	$	—		 	$	305		 	$	367		
		
(1)  	Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $ 3,669 million and other investments of $ 18 million at September 30, 2017 measured using NAV as a practical expedient.	
		
(2)  	Our GLB reinsurance product meets the definition of a derivative instrument for accounting purposes and is accordingly carried at fair value. Excluded from the table above is the portion of the GLB derivative liability classified as Future policy benefits in the Consolidated balance sheets.	

16

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

 

																
December 31, 2016	Level 1		 	Level 2		 	Level 3		 	Total		
(in millions of U.S. dollars)			 			 			 			
Assets:	 	 	 	 	 	 	 	
Fixed maturities available for sale	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	2,175		 	$	695		 	$	—		 	$	2,870		
Foreign	—		 	21,366		 	74		 	21,440		
Corporate securities	—		 	23,468		 	681		 	24,149		
Mortgage-backed securities	—		 	13,962		 	45		 	14,007		
States, municipalities, and political subdivisions	—		 	17,649		 	—		 	17,649		
 	2,175		 	77,140		 	800		 	80,115		
Equity securities	773		 	—		 	41		 	814		
Short-term investments	1,757		 	1,220		 	25		 	3,002		
Other investments (1)	384		 	259		 	225		 	868		
Securities lending collateral	—		 	1,092		 	—		 	1,092		
Investment derivative instruments	31		 	—		 	—		 	31		
Other derivative instruments	3		 	—		 	—		 	3		
Separate account assets	1,784		 	95		 	—		 	1,879		
Total assets measured at fair value (1)	$	6,907		 	$	79,806		 	$	1,091		 	$	87,804		
Liabilities:	 	 	 	 	 	 	 	
Investment derivative instruments	$	54		 	$	—		 	$	—		 	$	54		
Other derivative instruments	—		 	—		 	13		 	13		
GLB (2)	—		 	—		 	559		 	559		
Total liabilities measured at fair value	$	54		 	$	—		 	$	572		 	$	626		
		
(1)  	Excluded from the table above are partially-owned investments, investment funds, and limited partnerships of $3,626 million and other investments of $25 million at December 31, 2016 measured using NAV as a practical expedient.	
		
(2)  	Our GLB reinsurance product meets the definition of a derivative instrument for accounting purposes and is accordingly carried at fair value. Excluded from the table above is the portion of the GLB derivative liability classified as Future policy benefits in the Consolidated balance sheets.	

There were no transfers of financial instruments between Level 1 and Level 2 for the three and nine months ended September 30, 2017 and 2016.

Fair value of alternative investments
Alternative investments include investment funds, limited partnerships, and partially-owned investment companies measured at fair value using NAV as a practical expedient. The following table presents, by investment category, the expected liquidation period, fair value, and maximum future funding commitments of alternative investments:

																		
 	 	 	 	 	September 30		 	 	 	December 31		
 	Expected
Liquidation
Period of Underlying Assets	 	 	 	2017		 	 	 	2016		
(in millions of U.S. dollars)			Fair
Value		 	Maximum
Future Funding
Commitments		 	Fair
Value		 	Maximum
Future Funding
Commitments		
Financial	5 to 9 Years	 	$	566		 	$	367		 	$	548		 	$	428		
Real Assets	3 to 7 Years	 	635		 	148		 	536		 	230		
Distressed	5 to 9 Years	 	327		 	157		 	485		 	179		
Private Credit	3 to 7 Years	 	216		 	329		 	236		 	259		
Traditional	3 to 9 Years	 	1,643		 	729		 	1,550		 	930		
Vintage	1 to 2 Years	 	18		 	—		 	21		 	14		
Investment funds	Not Applicable	 	264		 	—		 	251		 	—		
 	 	 	$	3,669		 	$	1,730		 	$	3,627		 	$	2,040		

17

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Included in all categories in the above table, except for Investment funds, are investments for which Chubb will never have the contractual option to redeem but receives distributions based on the liquidation of the underlying assets. Further, for all categories except for Investment funds, Chubb does not have the ability to sell or transfer the investments without the consent from the general partner of individual funds.

			
Investment Category:	 	Consists of investments in private equity funds:	
Financial	 	targeting financial services companies such as financial institutions and insurance services worldwide	
Real Assets	 	targeting investments related to hard physical assets such as real estate, infrastructure and natural resources	
Distressed	 	targeting distressed corporate debt/credit and equity opportunities in the U.S.	
Private Credit	 	targeting privately originated corporate debt investments including senior secured loans and subordinated bonds	
Traditional	 	employing traditional private equity investment strategies such as buyout and growth equity globally	
Vintage	 	made before 2002 and where the funds’ commitment periods had already expired	

Investment funds
Chubb’s investment funds employ various investment strategies such as long/short equity and arbitrage/distressed. Included in this category are investments for which Chubb has the option to redeem at agreed upon value as described in each investment fund’s subscription agreement. Depending on the terms of the various subscription agreements, investment fund investments may be redeemed monthly, quarterly, semi-annually, or annually. If Chubb wishes to redeem an investment fund investment, it must first determine if the investment fund is still in a lock-up period (a time when Chubb cannot redeem its investment so that the investment fund manager has time to build the portfolio). If the investment fund is no longer in its lock-up period, Chubb must then notify the investment fund manager of its intention to redeem by the notification date prescribed by the subscription agreement. Subsequent to notification, the investment fund can redeem Chubb’s investment within several months of the notification. Notice periods for redemption of the investment funds range between 5 and 120 days. Chubb can redeem its investment funds without consent from the investment fund managers.

Level 3 financial instruments
The fair values of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) consist of various inputs and assumptions that management makes when determining fair value. Management analyzes changes in fair value measurements classified within Level 3 by comparing pricing and returns of our investments to benchmarks, including month-over-month movements, investment credit spreads, interest rate movements, and credit quality of securities.

The following table presents the significant unobservable inputs used in the Level 3 liability valuations. Excluded from the table below are inputs used to determine the fair value of Level 3 assets which are based on single broker quotes and contain no quantitative unobservable inputs developed by management.

														
(in millions of U.S. dollars, except for percentages)	Fair Value	 	 	Valuation
Technique	 	Significant
Unobservable Inputs	 	Ranges	
	September 30, 2017		 	December 31, 2016		 		 		 		
GLB (1)	$	303		 	$	559		 	Actuarial model	 	Lapse rate	 	3% – 34%	
 	 	 	 	 	 	 	Annuitization rate	 	0% – 78%	
		
(1)  	Discussion of the most significant inputs used in the fair value measurement of GLB and the sensitivity of those assumptions is included within Note 4 a) Guaranteed living benefits.	

18

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The following tables present a reconciliation of the beginning and ending balances of financial instruments measured at fair value using significant unobservable inputs (Level 3):

																																
 	Assets	 	 	Liabilities	 	
Three Months Ended	Available-for-Sale Debt Securities	Equity
securities		 	Short-term investments		 	Other
investments		 	Other
derivative
instruments		 	GLB (1)		
September 30, 2017	Foreign		 	Corporate
securities		 	MBS		 									 						
(in millions of U.S. dollars)			 			 			 									 						
Balance – beginning of period	$	85		 	$	747		 	$	45		 	$	39		 	$	7		 	$	243		 	$	2		 	$	357		
Transfers into Level 3	—		 	111		 	—		 	—		 	—		 	—		 	—		 	—		
Transfers out of Level 3	(3	)	 	(26	)	 	—		 	—		 	—		 	—		 	—		 	—		
Change in Net Unrealized Gains (Losses) included in OCI	1		 	(1	)	 	—		 	—		 	—		 	—		 	—		 	—		
Net Realized Gains/Losses	—		 	—		 	—		 	1		 	—		 	—		 	—		 	(54	)	
Purchases	24		 	169		 	7		 	17		 	1		 	15		 	—		 	—		
Sales	(14	)	 	(24	)	 	—		 	(5	)	 	—		 	—		 	—		 	—		
Settlements	(3	)	 	(57	)	 	(8	)	 	—		 	(8	)	 	(6	)	 	—		 	—		
Balance – end of period	$	90		 	$	919		 	$	44		 	$	52		 	$	—		 	$	252		 	$	2		 	$	303		
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date	$	—		 	$	—		 	$	—		 	$	—		 	$	—		 	$	—		 	$	—		 	$	(54	)	
		
(1)  	Our GLB reinsurance product meets the definition of a derivative instrument for accounting purposes and is accordingly carried at fair value. Excluded from the table above is the portion of the GLB derivative liability classified as Future policy benefits in the Consolidated balance sheets. The liability for GLB reinsurance was $635 million at September 30, 2017, and $684 million at June 30, 2017, which includes a fair value derivative adjustment of $303 million and $357 million , respectively.	

	
																																
  	Assets	 	 	 	 	Liabilities		
Three Months Ended	Available-for-Sale Debt Securities	 	 	Equity
securities		 	Short-term investments		 	Other
investments		 	Other derivative instruments		 	GLB (1)		
September 30, 2016	Foreign		 	Corporate
securities		 	MBS		 									 						
(in millions of U.S. dollars)			 			 			 									 						
Balance – beginning of period	$	87		 	$	281		 	$	49		 	$	37		 	$	50		 	$	216		 	$	10		 	$	971		
Transfers into Level 3	—		 	—		 	—		 	—		 	—		 	—		 	—		 	—		
Transfers out of Level 3	—		 	—		 	—		 	—		 	—		 	—		 	—		 	—		
Change in Net Unrealized Gains (Losses) included in OCI	(1	)	 	6		 	—		 	3		 	—		 	4		 	—		 	—		
Net Realized Gains/Losses	—		 	(4	)	 	—		 	—		 	—		 	—		 	—		 	(88	)	
Purchases	20		 	348		 	—		 	—		 	12		 	8		 	—		 	—		
Sales	(2	)	 	(18	)	 	(3	)	 	(3	)	 	—		 	—		 	—		 	—		
Settlements	(1	)	 	(7	)	 	—		 	—		 	—		 	(5	)	 	(2	)	 	—		
Balance – end of period	$	103		 	$	606		 	$	46		 	$	37		 	$	62		 	$	223		 	$	8		 	$	883		
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date	$	—		 	$	(4	)	 	$	—		 	$	—		 	$	—		 	$	—		 	$	—		 	$	(88	)	
		
(1)  	Our GLB reinsurance product meets the definition of a derivative instrument for accounting purposes and is accordingly carried at fair value. Excluded from the table above is the portion of the GLB derivative liability classified as Future policy benefits in the Consolidated balance sheets. The liability for GLB reinsurance was $1.2 billion at September 30, 2016 , and $1.3 billion at June 30, 2016, which includes a fair value derivative adjustment of $883 million and $971 million, respectively.	

19

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

	
																																
 	Assets	 	 	Liabilities	 	
Nine Months Ended	Available-for-Sale Debt Securities	Equity
securities		 	Short-term investments		 	Other
investments		 	Other
derivative
instruments		 	GLB (1)		
September 30, 2017	Foreign		 	Corporate
securities		 	MBS		 									 						
(in millions of U.S. dollars)			 			 			 									 						
Balance – beginning of period	$	74		 	$	681		 	$	45		 	$	41		 	$	25		 	$	225		 	$	13		 	$	559		
Transfers into Level 3	—		 	168		 	—		 	—		 	—		 	—		 	—		 	9		
Transfers out of Level 3	(3	)	 	(93	)	 	—		 	—		 	—		 	—		 	(9	)	 	—		
Change in Net Unrealized Gains (Losses) included in OCI	3		 	(9	)	 	—		 	1		 	—		 	3		 	—		 	—		
Net Realized Gains/Losses	1		 	(1	)	 	—		 	1		 	—		 	—		 	(2	)	 	(265	)	
Purchases	57		 	390		 	8		 	23		 	15		 	39		 	—		 	—		
Sales	(36	)	 	(79	)	 	(1	)	 	(14	)	 	—		 	—		 	—		 	—		
Settlements	(6	)	 	(138	)	 	(8	)	 	—		 	(40	)	 	(15	)	 	—		 	—		
Balance – end of period	$	90		 	$	919		 	$	44		 	$	52		 	$	—		 	$	252		 	$	2		 	$	303		
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date	$	—		 	$	—		 	$	—		 	$	—		 	$	—		 	$	—		 	$	(2	)	 	$	(265	)	
		
(1)  	Our GLB reinsurance product meets the definition of a derivative instrument for accounting purposes and is accordingly carried at fair value. Excluded from the table above is the portion of the GLB derivative liability classified as Future policy benefits in the Consolidated balance sheets. The liability for GLB reinsurance was $635 million at September 30, 2017, and $853 million at December 31, 2016, which includes a fair value derivative adjustment of $303 million and $559 million , respectively.	

	
																																
  	Assets	 	 	 	 	Liabilities		
Nine Months Ended	Available-for-Sale Debt Securities	 	 	Equity
securities		 	Short-term investments		 	Other
investments		 	Other derivative instruments		 	GLB (1)		
September 30, 2016	Foreign		 	Corporate
securities		 	MBS		 			 			 			 						
(in millions of U.S. dollars)			 			 			 			 			 			 						
Balance – beginning of period	$	57		 	$	174		 	$	53		 	$	16		 	$	—		 	$	212		 	$	6		 	$	609		
Transfers into Level 3	9		 	18		 	—		 	—		 	—		 	—		 	—		 	—		
Transfers out of Level 3	(2	)	 	—		 	—		 	—		 	—		 	—		 	—		 	—		
Change in Net Unrealized Gains (Losses) included in OCI	8		 	17		 	—		 	2		 	—		 	4		 	—		 	—		
Net Realized Gains/Losses	(6	)	 	(12	)	 	—		 	1		 	—		 	—		 	2		 	274		
Purchases (2)	52		 	472		 	1		 	23		 	62		 	22		 	2		 	—		
Sales	(10	)	 	(48	)	 	(8	)	 	(5	)	 	—		 	—		 	—		 	—		
Settlements	(5	)	 	(15	)	 	—		 	—		 	—		 	(15	)	 	(2	)	 	—		
Balance – end of period	$	103		 	$	606		 	$	46		 	$	37		 	$	62		 	$	223		 	$	8		 	$	883		
Net Realized Gains/Losses Attributable to Changes in Fair Value at the Balance Sheet Date	$	(5	)	 	$	(11	)	 	$	—		 	$	—		 	$	—		 	$	—		 	$	2		 	$	274		
		
(1)  	Our GLB reinsurance product meets the definition of a derivative instrument for accounting purposes and is accordingly carried at fair value. Excluded from the table above is the portion of the GLB derivative liability classified as Future policy benefits in the Consolidated balance sheets. The liability for GLB reinsurance was $1.2 billion at September 30, 2016 , and $888 million at December 31, 2015, which includes a fair value derivative adjustment of $883 million and $609 million , respectively.	
		
(2)  	Includes acquired invested assets as a result of the Chubb Corp acquisition.	

b) Financial instruments disclosed, but not measured, at fair value
Chubb uses various financial instruments in the normal course of its business. Our insurance contracts are excluded from fair value of financial instruments accounting guidance, and therefore, are not included in the amounts discussed below.

20

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The carrying values of cash, other assets, other liabilities, and other financial instruments not included below approximated their fair values.

Investments in partially-owned insurance companies
Fair values for investments in partially-owned insurance companies are based on Chubb’s share of the net assets based on the financial statements provided by those companies and are excluded from the valuation hierarchy tables below.

Short- and long-term debt, repurchase agreements, and trust preferred securities
Where practical, fair values for short-term debt, long-term debt, repurchase agreements, and trust preferred securities are estimated using discounted cash flow calculations based principally on observable inputs including incremental borrowing rates, which reflect Chubb’s credit rating, for similar types of borrowings with maturities consistent with those remaining for the debt being valued.

The following tables present fair value, by valuation hierarchy, and carrying value of the financial instruments not measured at fair value: 

																				
September 30, 2017	Fair Value	 	 	Carrying Value		
(in millions of U.S. dollars)	Level 1		 	Level 2		 	Level 3		 	Total		 			
Assets:	 	 	 	 	 	 	 	 	 	
Fixed maturities held to maturity	 	 	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	563		 	$	58		 	$	—		 	$	621		 	$	611		
Foreign	—		 	644		 	—		 	644		 	616		
Corporate securities	—		 	2,578		 	11		 	2,589		 	2,531		
Mortgage-backed securities	—		 	1,258		 	—		 	1,258		 	1,223		
States, municipalities, and political subdivisions	—		 	5,253		 	—		 	5,253		 	5,179		
Total assets	$	563		 	$	9,791		 	$	11		 	$	10,365		 	$	10,160		
Liabilities:	 	 	 	 	 	 	 	 	 	
Repurchase agreements	$	—		 	$	1,408		 	$	—		 	$	1,408		 	$	1,408		
Short-term debt	—		 	1,025		 	—		 	1,025		 	1,020		
Long-term debt	—		 	12,273		 	—		 	12,273		 	11,559		
Trust preferred securities	—		 	467		 	—		 	467		 	308		
Total liabilities	$	—		 	$	15,173		 	$	—		 	$	15,173		 	$	14,295		

																				
December 31, 2016	Fair Value	 	 	Carrying Value		
(in millions of U.S. dollars)	Level 1		 	Level 2		 	Level 3		 	Total		 			
Assets:	 	 	 	 	 	 	 	 	 	
Fixed maturities held to maturity	 	 	 	 	 	 	 	 	 	
U.S. Treasury and agency	$	555		 	$	106		 	$	—		 	$	661		 	$	655		
Foreign	—		 	667		 	—		 	667		 	640		
Corporate securities	—		 	2,782		 	13		 	2,795		 	2,771		
Mortgage-backed securities	—		 	1,428		 	—		 	1,428		 	1,393		
States, municipalities, and political subdivisions	—		 	5,119		 	—		 	5,119		 	5,185		
Total assets	$	555			$	10,102			$	13			$	10,670			$	10,644		
Liabilities:	 	 	 	 	 	 	 	 	 	
Repurchase agreements	$	—		 	$	1,403		 	$	—		 	$	1,403		 	$	1,403		
Short-term debt	—		 	503		 	—		 	503		 	500		
Long-term debt	—		 	12,998		 	—		 	12,998		 	12,610		
Trust preferred securities	—		 	456		 	—		 	456		 	308		
Total liabilities	$	—		 	$	15,360		 	$	—		 	$	15,360		 	$	14,821		

21

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

5. Unpaid losses and loss expenses

The following table presents a reconciliation of beginning and ending Unpaid losses and loss expenses:

								
 	Nine Months Ended September 30	 	
(in millions of U.S. dollars)	2017		 	2016		
Gross unpaid losses and loss expenses – beginning of period	$	60,540		 	$	37,303		
Reinsurance recoverable on unpaid losses (1)	(12,708	)	 	(10,741	)	
Net unpaid losses and loss expenses – beginning of period	47,832		 	26,562		
Acquisition of subsidiaries	—		 	21,402		
Total	47,832		 	47,964		
Net losses and loss expenses incurred in respect of losses occurring in:	 	 	 	
Current year	14,963		 	13,169		
Prior years (2)	(781	)	 	(972	)	
Total	14,182		 	12,197		
Net losses and loss expenses paid in respect of losses occurring in:	 	 	 	
Current year	3,937		 	3,865		
Prior years	8,389		 	7,470		
Total	12,326		 	11,335		
Foreign currency revaluation and other	596		 	(155	)	
Net unpaid losses and loss expenses – end of period	50,283		 	48,671		
Reinsurance recoverable on unpaid losses (1)	13,870		 	12,676		
Gross unpaid losses and loss expenses – end of period	$	64,153		 	$	61,347		
(1) Net of provision for uncollectible reinsurance.
(2) Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments, and earned premiums totaling $110 million and $75 million for the nine months ended September 30, 2017 and 2016, respectively.

The increase in gross and net unpaid losses and loss expenses in 2017 primarily reflects the significant catastrophe events during the third quarter of 2017, principally from hurricanes Harvey, Irma and Maria and the earthquakes in Mexico.

Prior Period Development
Prior period development arises from changes to loss estimates recognized in the current year that relate to loss events that occurred in previous calendar years and excludes the effect of losses from the development of earned premium from previous accident years. Significant prior period movements by segment, principally driven by reserve reviews completed during each respective period, are discussed in more detail below. The remaining net development for long-tail lines and short-tail business for each segment and Corporate comprises numerous favorable and adverse movements across a number of lines and accident years, none of which is significant individually or in the aggregate.

Long-tail lines include lines such as workers' compensation, general liability, and professional liability; while short-tail lines include lines such as most property lines, energy, personal accident, and agriculture. During the third quarter of 2017, we determined that the classification of loss development for certain businesses, previously grouped within the short-tail discussion below, would be more appropriately classified as long-tail to better align with the classification of these businesses within our loss development tables in the 2016 Form 10-K. We also determined that the loss development for certain other businesses should be reclassified from long-tail to short-tail. We updated our 2016 and year-to-date 2017 discussions below to conform to the current period presentation. These changes to the previously disclosed amount have no impact to our financial condition and results of operations.

22

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

North America Commercial P&C Insurance

2017
For the three months ended September 30, 2017 , net favorable PPD was $236 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $242 million in long-tail business, primarily from:	

•	Favorable development of $140 million in commercial excess and umbrella portfolios primarily in accident years 2011 and prior driven by lower paid and reported loss activity relative to prior expectations as well as an increase in weighting towards experience-based methods;	

•	Favorable development of $44 million in workers' compensation business mainly impacting accident years 2013 and prior, driven by lower than expected paid and reported loss activity, and revisions to development patterns used in our loss projection methods for select portfolios; and	

•	Net favorable development of $28 million on several large multi-line prospective deals primarily impacting the 2012 and 2013 accident years, due to lower than expected reported loss activity. These structured deals typically cover large clients for multiple product lines and with varying loss limitations; this development is net of premium adjustments of $26 million tied to the loss performance of the particular deals.	

•	Net adverse development of $6 million in short-tail business across a number of accident years, none of which were significant individually or in the aggregate.	

For the nine months ended September 30, 2017 , net favorable PPD was $546 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $431 million in long-tail business, primarily from:	

•	Net favorable development of $99 million in our workers’ compensation businesses (excluding excess compensation) with favorable development of $37 million in the 2016 accident year related to our annual assessment of multi-claimant events including industrial accidents. Consistent with prior years, we reviewed these potential exposures after the close of the accident year to allow for late reporting or identification of significant losses. Net favorable development of $62 million was principally due to lower than expected loss experience and revision to development patterns used in our loss projection methods, mainly impacting accident years 2013 and prior, and partly offset by smaller adverse development in the more recent prior accident years;	

•	Net favorable development of $213 million in our commercial excess and umbrella portfolios, primarily in accident years 2011 and prior, driven by lower than expected reported loss activity, and an increase in weighting towards experience-based methods;	

•	Favorable development of $27 million in our commercial-multi peril (CMP) and monoline general liability lines, driven by favorable paid and reported loss activity relative to prior expectations, principally in accident years 2008 through 2013;	

•	Net favorable development of $30 million in our professional Errors and Omissions (E&O) portfolios, primarily in the 2012 and 2013 accident years, arising from lower than expected reported loss activity, partially offset by claim-specific adverse development; and	

•	Favorable development of $28 million in large multi-line accounts due primarily to the same factors experienced for the three months ended September 30, 2017.	

•	Net favorable development of $115 million in short-tail business, primarily from:	

•	Net favorable development of $45 million in our credit-related business, primarily due to lower than expected claims severity in the 2015 accident year;	

23

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

		
•	Favorable development of $43 million in property lines, primarily in our commercial property portfolios, driven by lower than expected loss emergence in the 2014 and 2016 accident years; and	

•	Net favorable development of $19 million in our accident & health (A&H) business, primarily due to lower than expected loss emergence in the 2015 and 2016 accident years.	

2016
For the three months ended September 30, 2016 , net favorable PPD was $187 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $167 million in long-tail business, primarily from favorable development of $127 million in our commercial excess and umbrella portfolios, impacting the 2010 and prior accident years, driven by continued lower than expected reported loss activity and an increase in weighting towards experience-based methods; and	

•	Net favorable development of $20 million in short-tail business, principally from our property portfolios, primarily impacting the 2014 and 2015 accident years, resulting from lower than expected loss emergence.	

For the nine months ended September 30, 2016 , net favorable PPD was $533 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $473 million in long-tail business, primarily from:	

•	Favorable development of $272 million in our commercial excess and umbrella portfolios, primarily in accident years 2010 and prior, driven by lower than expected reported loss activity and an increase in weighting towards experience-based methods; in general, the severity of claims has been less than expected;	

•	Net favorable development of $134 million in our workers’ compensation lines, including excess lines, with favorable development of $40 million in the 2015 accident year related to our annual assessment of multi-claimant events including industrial accidents. Favorable development of $91 million in accident years 2012 and prior was principally due to lower than expected loss experience and revision to the basis for selecting development patterns used in our loss projection methods;	

•	Favorable development of $69 million in our professional E&O portfolios, primarily impacting the 2012 and prior accident years and arising from both lower than expected reported loss activity and re-assessments of remaining claim-specific liabilities for the older accident years;	

•	Net favorable development of $20 million in our primary general and package liability lines from favorable development due to lower than expected reported and paid activity, principally in accident years 2007 through 2014; and	

•	Net favorable development of $60 million in short-tail business, primarily from net favorable development of $46 million in our property portfolios, primarily impacting the 2014 and 2015 accident years, resulting from lower than expected loss emergence.	

North America Personal P&C Insurance

2017
For the three months ended September 30, 2017 , net adverse PPD was $32 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net adverse development of $98 million in our homeowners lines, primarily impacting the 2016 accident year, due to higher than expected loss severity; and	

•	Net favorable development of $58 million in our personal excess lines primarily impacting the 2014 accident year, due to lower than expected loss experience and an increase weighting towards experience-based methods.	

24

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

For the nine months ended September 30, 2017 , net adverse PPD was $66 million , including adverse development of $105 million in our homeowners lines and favorable development of $58 million in our personal excess lines as described above.

2016
For the three months ended September 30, 2016, net adverse PPD was $38 million , including $28 million adverse development in our homeowners and umbrella lines due to higher than expected loss emergence. Average loss severities were higher than expected, and to a lesser degree, reinsurance and other recoveries were lower than expected.

For the nine months ended September 30, 2016, net adverse PPD was $20 million , due primarily to higher than expected loss emergence in our homeowners and umbrella lines as described above.

North America Agricultural Insurance

2017
For the three months ended September 30, 2017 , net favorable PPD was $4 million across a number of accident years, none of which were significant individually or in the aggregate.

For the nine months ended September 30, 2017 , net favorable PPD was $83 million . The majority of the claim development relates to our Multiple Peril Crop Insurance (MPCI) business and is favorable due to better than expected crop yield results in certain states at the prior year-end period (i.e., 2017 results based on crop yield results at year-end 2016).

2016
For the three months ended September 30, 2016, net favorable PPD was $11 million across a number of accident years, none of which were significant individually or in the aggregate.

For the nine months ended September 30, 2016, net favorable PPD was $52 million . Actual claim development in the first quarter of 2016 for the 2015 crop year for MPCI business was favorable due to better than expected crop yield results in certain states at year-end 2015.

Overseas General Insurance

2017
For the three months ended September 30, 2017 , net favorable PPD was $108 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $109 million in long-tail business, primarily from:	

•	Net favorable development of $40 million in casualty lines, with favorable development of $69 million in accident years 2013 and prior, resulting from lower than expected loss emergence, partially offset by adverse development of $29 million in accident years 2014 through 2016, primarily due to large loss experience in U.K. excess lines and wholesale business; and	

•	Net favorable development of $34 million in financial lines, with favorable development of $124 million in accident years 2013 and prior, resulting from lower than expected loss emergence including favorable development on specific, litigated claims, and adverse development of $90 million in accident years 2014 through 2016, primarily due to large loss experience in specific Directors and Officers (D&O) portfolios in the U.K., Continental Europe, and Australia and Financial Institutions lines in the U.K. and Continental Europe.	

For the nine months ended September 30, 2017 , net favorable PPD was $184 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $78 million in long-tail business, primarily from:	

•	Favorable development of $34 million in financial lines, driven by the same factors as experienced for the three months ended September 30, 2017 as described above; and	

25

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

		
•	Net favorable development of $9 million in casualty lines, driven by the same factors as experienced for the three months ended September 30, 2017, as described above, partially offset by adverse development of  $32 million driven by a change in the discount rate in the U.K. (Ogden rate) impacting the 2016 and prior accident years.	

•	Net favorable development of $106 million in short-tail business, primarily from:	

•	Favorable development of $43 million in technical and energy lines, primarily from favorable loss emergence in accident years 2014 through 2016 primarily in offshore and power generation where experience has been better than expected;	

•	Favorable development of  $37 million  in property and marine (excluding technical lines), primarily in accident years 2013 through 2015, driven mainly by favorable U.K. and Continental Europe loss emergence, including favorable claim-specific loss settlements; and	

•	Favorable development of  $20 million  in A&H lines, primarily from favorable loss emergence in Asia Pacific and Continental Europe in accident years 2014 through 2016.	

2016
For the three months ended September 30, 2016, net favorable PPD was $223 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $234 million in long-tail business, primarily from:	

•	Net favorable development of $167 million , primarily in casualty and financial lines, with favorable development of $261 million in accident years 2012 and prior, resulting from lower than expected loss emergence, and adverse development of $94 million in accident years 2013 to 2015, primarily due to large loss experience in our D&O portfolio in Asia and financial lines in Europe;	

•	Favorable development of $28 million in aviation lines, impacting accident years 2012 and prior due to lower than expected loss emergence and case-specific reserve reductions; and	

•	Favorable development of $25 million on an individual legacy liability case reserve take-down. This release follows a legal analysis completed in the third quarter of 2016, based on court opinion in the quarter and discussions with defense counsel, which concluded that these reserves were no longer required.	

•	Adverse development of $11 million in short-tail business, none of which was significant individually or in the aggregate.	

For the nine months ended September 30, 2016, net favorable PPD was $338 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $235 million in long-tail business due primarily to the same factors experienced for the three months ended September 30, 2016.	

•	Net favorable development of $103 million in short-tail business primarily from:	

•	Net favorable development of $66 million in property (including technical lines), primarily from favorable Continental Europe loss emergence in accident years 2012 through 2014;	

•	Favorable development of $35 million in energy lines, primarily from a claims review of catastrophe impacts on underwriting years 2004 through 2008, as well as favorable loss emergence in accident years 2010 through 2014, primarily in offshore where experience on multi-year construction accounts has been better than expected; and	

Global Reinsurance

2017
For the three months ended September 30, 2017 , net favorable PPD was $41 million , which was the net result of several underlying favorable and adverse movements, and was driven by net favorable development of $29 million in our professional

26

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

liability and medical malpractice lines primarily from treaty years 2013 and prior, principally resulting from lower than expected loss emergence in the U.S. portfolio.

For the nine months ended September 30, 2017 , net favorable PPD was $64 million , which was the net result of several underlying favorable and adverse movements, and was driven by the following principal changes:

•	Net favorable development of $67 million on long-tail lines of business, primarily from:	

•	Favorable development of $66 million in our casualty, professional liability and medical malpractice lines, primarily driven by the same factors as experienced for the three months ended September 30, 2017 as described above; and	

•	Net adverse development of $10 million in our motor and excess liability lines, primarily due to adverse development of $9 million driven by a change in the discount rate in the U.K. (Ogden rate) primarily impacting the 2015 and prior treaty years.	

2016
For the three months ended September 30, 2016, net favorable PPD was $28 million , primarily from net favorable development of $24 million in professional liability lines primarily impacting treaty years 2011 and prior due to lower than expected loss emergence.

For the nine months ended September 30, 2016, net favorable PPD was $78 million , which was driven by the following principal changes:

•	Net favorable development of $41 million in casualty lines primarily impacting treaty years 2011 and prior, principally resulting from lower than expected loss emergence; and	

•	Net favorable development of $30 million in professional liability lines due to the same factors experienced for the three months ended September 30, 2016, as described above.	

Corporate

2017
For the three months ended September 30, 2017 , adverse development was $87 million , driven principally by development of $77 million in environmental liabilities and $9 million for unallocated loss adjustment expenses due to run-off operating expenses paid and incurred in the respective periods, impacting the 1995 and prior accident years. The development in environmental liabilities was due to case specific settlements and both higher than expected remediation expense and defense costs. These higher costs impacted both large modeled accounts as well as smaller accounts.

For the nine months ended September 30, 2017 , adverse development was $140 million , driven principally by development of environmental liabilities as described above, $35 million of development on run-off non-A&E casualty exposures due to higher than expected loss activity, and $28 million of unallocated loss adjustment expenses due to run-off operating expenses paid and incurred in the respective period.

2016
For the three months ended September 30, 2016, adverse development was $62 million , and was driven principally by development of $52 million in environmental liabilities and $10 million for unallocated loss adjustment expenses due to run-off operating expenses paid and incurred in the respective periods, impacting the 1995 and prior accident years. The development in environmental liabilities was due to case specific settlements and both higher than expected remediation expense and defense costs. These higher costs impacted both large modeled accounts as well as smaller accounts.

For the nine months ended September 30, 2016, adverse development was $84 million , and was driven principally by development of environmental liabilities as described above and $27 million of unallocated loss adjustment expenses due to run-off operating expenses paid and incurred in the respective period.

27

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

6 . Commitments, contingencies, and guarantees

a) Derivative instruments
Foreign currency management
As a global company, Chubb entities transact business in multiple currencies. Our policy is to generally match assets, liabilities, and required capital for each individual jurisdiction in local currency, which would include the use of derivatives discussed below. We do not hedge our net asset non-U.S. dollar capital positions; however, we do consider hedging for planned cross border transactions.

Derivative instruments employed
Chubb maintains positions in derivative instruments such as futures, options, swaps, and foreign currency forward contracts for which the primary purposes are to manage duration and foreign currency exposure, yield enhancement, or to obtain an exposure to a particular financial market. Chubb also maintains positions in convertible securities that contain embedded derivatives. Investment derivative instruments are recorded in either Other assets (OA) or Accounts payable, accrued expenses, and other liabilities (AP), convertible bonds are recorded in Fixed maturities available for sale (FM AFS), and convertible equity securities are recorded in Equity securities (ES) in the Consolidated balance sheets. These are the most numerous and frequent derivative transactions.

In addition, Chubb from time to time purchases to be announced mortgage-backed securities (TBAs) as part of its investing activities.

Under reinsurance programs covering GLBs, Chubb assumes the risk of GLBs, including GMIB and GMAB, associated with variable annuity contracts. The GMIB risk is triggered if, at the time the contract holder elects to convert the accumulated account value to a periodic payment stream (annuitize), the accumulated account value is not sufficient to provide a guaranteed minimum level of monthly income. The GMAB risk is triggered if, at contract maturity, the contract holder’s account value is less than a guaranteed minimum value. The GLB reinsurance product meets the definition of a derivative instrument. Benefit reserves in respect of GLBs are classified as Future policy benefits (FPB) while the fair value derivative adjustment is classified within AP. Chubb also generally maintains positions in exchange-traded equity futures contracts on equity market indices to limit equity exposure in the GMDB and GLB blocks of business.

All derivative instruments are carried at fair value with changes in fair value recorded in Net realized gains (losses) in the Consolidated statements of operations. None of the derivative instruments are designated as hedges for accounting purposes.

28

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The following table presents the balance sheet locations, fair values of derivative instruments in an asset or (liability) position, and notional values/payment provisions of our derivative instruments:

																										
 	 	 	 	 	September 30, 2017	 	 	 	 	December 31, 2016	 	
 	Consolidated
Balance Sheet
Location	 	Fair Value	 	 	Notional
Value/
Payment
Provision		 	Fair Value	 	 	Notional
Value/
Payment
Provision		
(in millions of U.S. dollars)		 	Derivative Asset		 	Derivative (Liability)		 			 	Derivative Asset		 	Derivative (Liability)		 			
Investment and embedded derivative instruments:	 	 	 	 	 	 	 	 	 	 	 	 	 	
Foreign currency forward contracts	OA / (AP)	 	$	8		 	$	(31	)	 	$	2,035		 	$	25		 	$	(50	)	 	$	2,220		
Cross-currency swaps	OA / (AP)	 	—		 	—		 	45		 	—		 	—		 	95		
Options/Futures contracts on notes and bonds	OA / (AP)	 	7		 	(6	)	 	1,437		 	6		 	(4	)	 	2,344		
Convertible securities (1)	FM AFS / ES	 	—		 	—		 	4		 	2		 	—		 	7		
 	 	 	$	15		 	$	(37	)	 	$	3,521		 	$	33		 	$	(54	)	 	$	4,666		
Other derivative instruments:	 	 	 	 	 	 	 	 	 	 	 	 	 	
Futures contracts on equities   (2)	OA / (AP)	 	$	—		 	$	(25	)	 	$	1,455		 	$	1		 	$	—		 	$	1,316		
Other	OA / (AP)	 	—		 	(2	)	 	259		 	2		 	(13	)	 	214		
 	 	 	$	—		 	$	(27	)	 	$	1,714		 	$	3		 	$	(13	)	 	$	1,530		
GLB (3)	(AP) / (FPB)	 	$	—		 	$	(635	)	 	$	1,138		 	$	—		 	$	(853	)	 	$	1,264		
		
(1)  	Includes fair value of embedded derivatives.	
		
(2)  	Related to GMDB and GLB blocks of business.	
		
(3)  	Includes both future policy benefits reserves and fair value derivative adjustment. Note that the payment provision related to GLB is the net amount at risk. The concept of a notional value does not apply to the GLB reinsurance contracts.	

At September 30, 2017 and December 31, 2016, derivative liabilities of $41 million and $10 million , respectively, included in the table above were subject to a master netting agreement. The remaining derivatives included in the table above were not subject to a master netting agreement. 

b) Secured borrowings
Chubb participates in a securities lending program operated by a third-party banking institution whereby certain assets are loaned to qualified borrowers and from which we earn an incremental return. The securities lending collateral can only be drawn down by Chubb in the event that the institution borrowing the securities is in default under the lending agreement. An indemnification agreement with the lending agent protects us in the event a borrower becomes insolvent or fails to return any of the securities on loan. The collateral is recorded in Securities lending collateral and the liability is recorded in Securities lending payable in the Consolidated balance sheets.

Potential risks exist in our secured borrowing transactions due to market conditions and counterparty exposure. With collateral that we pledge, there is a risk that the collateral may not be returned at the expiration of the agreement. If the counterparty fails to return the collateral, Chubb will have free use of the borrowed funds until our collateral is returned. In addition, we may encounter the risk that Chubb may not be able to renew outstanding borrowings with a new term or with an existing counterparty due to market conditions including a decrease in demand as well as more restrictive terms from banks due to increased regulatory and capital constraints. Should this condition occur, Chubb may seek alternative borrowing sources or reduce borrowings. Additionally, increased margins and collateral requirements due to market conditions would increase our restricted assets as we are required to provide additional collateral to support the transaction.

29

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The following table presents the carrying value of collateral held under securities lending agreements by investment category and remaining contractual maturity of the underlying agreements:

									
 	 	Remaining contractual maturity	 	
 	 	September 30		 	December 31		
 	 	2017		 	2016		
(in millions of U.S. dollars)	 	Overnight and Continuous	 	
Collateral held under securities lending agreements:	 	 	 	 	
Cash	 	$	1,109		 	$	423		
U.S. Treasury and agency	 	38		 	54		
Foreign	 	491		 	578		
Corporate securities	 	—		 	37		
Mortgage-backed securities	 	46		 	—		
Equity securities	 	73		 	—		
 	 	$	1,757		 	$	1,092		
Gross amount of recognized liability for securities lending payable	 	$	1,757		 	$	1,093		
Difference (1)	 	$	—		 	$	(1	)	
		
(1)  	The carrying value of the securities lending collateral held is $ 1 million lower than the securities lending payable at December 31, 2016 due to accrued interest recorded in the securities lending payable.	

At September 30, 2017 and December 31, 2016, our repurchase agreement obligations of $1,408 million and $1,403 million , respectively, were fully collateralized. In contrast to securities lending programs, the use of cash received is not restricted for the repurchase obligations. The fair value of the underlying securities sold remains in Fixed maturities available for sale and Equity securities and the repurchase agreement obligation is recorded in Repurchase agreements in the Consolidated balance sheets.  

The following table presents the carrying value of collateral pledged under repurchase agreements by investment category and remaining contractual maturity of the underlying agreements:

																								
 	Remaining contractual maturity	 	
 	September 30, 2017	 	 	December 31, 2016	 	
 	Up to
30 Days		 	Greater than
90 Days		 	Total		 	Up to
30 Days		 	Greater than
90 Days		 	Total		
(in millions of U.S. dollars)			 			 			 			 						
Collateral pledged under repurchase agreements:	 	 	 	 	 	 	 	 	 	 	 	
Cash	$	—		 	$	—		 	$	—		 	$	—		 	$	1		 	$	1		
U.S. Treasury and agency	231		 	9		 	240		 	230		 	10		 	240		
Mortgage-backed securities	343		 	858		 	1,201		 	339		 	881		 	1,220		
 	$	574		 	$	867		 	$	1,441		 	$	569		 	$	892		 	$	1,461		
Gross amount of recognized liabilities for repurchase agreements	 	 	 	 	$	1,408		 	 	 	 	 	$	1,403		
Difference (1)	 	 	 	 	$	33		 	 	 	 	 	$	58		
		
(1)  	Per the repurchase agreements, the amount of collateral posted is required to exceed the amount of gross liability.	

30

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

The following table presents net realized gains (losses) related to derivative instrument activity in the Consolidated statements of operations:

															
 	Three Months Ended	 	Nine Months Ended	 	
 	September 30	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		2017		 	2016		
Investment and embedded derivative instruments:	 	 	 	 	 	 	
Foreign currency forward contracts	$	(7	)	 	$	(10	)	$	—		 	$	(30	)	
All other futures contracts and options	(8	)	 	8		(25	)	 	(63	)	
Convertible securities (1)	1		 	3		1		 	8		
Total investment and embedded derivative instruments	$	(14	)	 	$	1		$	(24	)	 	$	(85	)	
GLB and other derivative instruments:	 	 	 	 	 	 	
GLB (2)	$	54		 	$	89		$	265		 	$	(270	)	
Futures contracts on equities (3)	(57	)	 	(45	)	(169	)	 	(88	)	
Other	(5	)	 	3		(4	)	 	1		
Total GLB and other derivative instruments	$	(8	)	 	$	47		$	92		 	$	(357	)	
 	$	(22	)	 	$	48		$	68		 	$	(442	)	
		
(1)  	Includes embedded derivatives.	
		
(2)  	Excludes foreign exchange gains (losses) related to GLB.	
		
(3)  	Related to GMDB and GLB blocks of business.	

c) Derivative instrument objectives
(i) Foreign currency exposure management
A foreign currency forward contract (forward) is an agreement between participants to exchange specific foreign currencies at a future date. Chubb uses forwards to minimize the effect of fluctuating foreign currencies as discussed above.

(ii) Duration management and market exposure
Futures
Futures contracts give the holder the right and obligation to participate in market movements, determined by the index or underlying security on which the futures contract is based. Settlement is made daily in cash by an amount equal to the change in value of the futures contract times a multiplier that scales the size of the contract. Exchange-traded futures contracts on money market instruments, notes, and bonds are used in fixed maturity portfolios to more efficiently manage duration, as substitutes for ownership of the money market instruments, bonds, and notes without significantly increasing the risk in the portfolio. Investments in futures contracts may be made only to the extent that there are assets under management not otherwise committed.

Exchange-traded equity futures contracts are used to limit exposure to a severe equity market decline, which would cause an increase in expected claims and therefore, an increase in reserves for GMDB and GLB reinsurance business.

Options
An option contract conveys to the holder the right, but not the obligation, to purchase or sell a specified amount or value of an underlying security at a fixed price. Option contracts are used in the investment portfolio as protection against unexpected shifts in interest rates, which would affect the duration of the fixed maturity portfolio. By using options in the portfolio, the overall interest rate sensitivity of the portfolio can be reduced. Option contracts may also be used as an alternative to futures contracts in the synthetic strategy as described above.

The price of an option is influenced by the underlying security, expected volatility, time to expiration, and supply and demand.

The credit risk associated with the above derivative financial instruments relates to the potential for non-performance by counterparties. Although non-performance is not anticipated, in order to minimize the risk of loss, management monitors the creditworthiness of its counterparties and obtains collateral. The performance of exchange-traded instruments is guaranteed by the exchange on which they trade. For non-exchange-traded instruments, the counterparties are principally banks which must meet certain criteria according to our investment guidelines.

31

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Cross-currency swaps
Cross-currency swaps are agreements under which two counterparties exchange interest payments and principal denominated in different currencies at a future date. We use cross-currency swaps to reduce the foreign currency and interest rate risk by converting cash flows back into local currency. We invest in foreign currency denominated investments to improve credit diversification and also to obtain better duration matching to our liabilities that is limited in the local currency market.

Other
Included within Other are derivatives intended to reduce potential losses which may arise from certain exposures in our insurance business. The economic benefit provided by these derivatives is similar to purchased reinsurance. For example, Chubb may enter into crop derivative contracts to protect underwriting results in the event of a significant decline in commodity prices.

(iii) Convertible security investments
A convertible security is a debt instrument or preferred stock that can be converted into a predetermined amount of the issuer’s equity. The convertible option is an embedded derivative within the host instruments which are classified in the investment portfolio as either available for sale or as an equity security. Chubb purchases convertible securities for their total return and not specifically for the conversion feature.

(iv) TBA
By acquiring TBAs, we make a commitment to purchase a future issuance of mortgage-backed securities. For the period between purchase of the TBAs and issuance of the underlying security, we account for our position as a derivative in the consolidated financial statements. Chubb purchases TBAs both for their total return and for the flexibility they provide related to our mortgage-backed security strategy.

(v) GLB
Under the GLB program, as the assuming entity, Chubb is obligated to provide coverage until the expiration or maturity of the underlying deferred annuity contracts or the expiry of the reinsurance treaty. Premiums received under the reinsurance treaties are classified as premium. Expected losses allocated to premiums received are classified as Future policy benefits and valued similar to GMDB reinsurance. Other changes in fair value, principally arising from changes in expected losses allocated to expected future premiums, are classified as Net realized gains (losses). Fair value represents management’s estimate of an exit price and thus, includes a risk margin. We may recognize a realized loss for other changes in fair value due to adverse changes in the capital markets (e.g., declining interest rates and/or declining equity markets) and changes in actual or estimated future policyholder behavior (e.g., increased annuitization or decreased lapse rates) although we expect the business to be profitable. We believe this presentation provides the most meaningful disclosure of changes in the underlying risk within the GLB reinsurance programs for a given reporting period.

d) Fixed maturities
At September 30, 2017 , we have commitments to purchase fixed income securities of $932 million over the next several years.

e) Other investments
At September 30, 2017 , included in Other investments in the Consolidated balance sheets are investments in limited partnerships and partially-owned investment companies with a carrying value of $3.4 billion. In connection with these investments, we have commitments that may require funding of up to $1.7 billion over the next several years.

In October 2017, we entered into a new limited partnership arrangement which may require funding of up to $2.5 billion over the next five years.

f) Taxation
At September 30, 2017 , $14 million of unrecognized tax benefits remain outstanding. It is reasonably possible that over the next twelve months, the amount of unrecognized tax benefits may change resulting from the re-evaluation of unrecognized tax benefits arising from examinations of taxing authorities and the closing of tax statute limitations. With few exceptions, Chubb is no longer subject to state and local or non-U.S. income tax examinations for years before 2010.

g) Letters of credit
On October 25, 2017, we replaced our $1.5 billion letter of credit/revolver facility that was set to expire in November 2017 with an amended and restated credit facility that provides for up to $1.0 billion of availability, all of which may be used for the issuance of letters of credit and for revolving loans.  We have the ability to increase the capacity under our existing credit facility

32

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

to $2.0 billion under certain conditions, but any such increase would not raise the sub-limit for revolving loans above $1.0 billion . The letter of credit facility required that we maintain certain financial covenants, all of which we met at September 30, 2017 and at the time of renewal.

h) Legal proceedings
Our insurance subsidiaries are subject to claims litigation involving disputed interpretations of policy coverages and, in some jurisdictions, direct actions by allegedly-injured persons seeking damages from policyholders. These lawsuits, involving claims on policies issued by our subsidiaries which are typical to the insurance industry in general and in the normal course of business, are considered in our loss and loss expense reserves. In addition to claims litigation, we are subject to lawsuits and regulatory actions in the normal course of business that do not arise from or directly relate to claims on insurance policies. This category of business litigation typically involves, among other things, allegations of underwriting errors or misconduct, employment claims, regulatory activity, or disputes arising from our business ventures. In the opinion of management, our ultimate liability for these matters could be, but we believe is not likely to be, material to our consolidated financial condition and results of operations.

7. Shareholders’ equity

All of Chubb’s Common Shares are authorized under Swiss corporate law. Though the par value of Common Shares is stated in Swiss francs, Chubb continues to use U.S. dollars as its reporting currency for preparing consolidated financial statements. Under Swiss corporate law, dividends, including distributions through a reduction in par value (par value reduction) or from legal reserves, must be stated in Swiss francs though dividend payments are made by Chubb in U.S. dollars. At September 30, 2017, our Common Shares had a par value of CHF 24.15 per share.

At our May 2016 and 2015 annual general meetings, our shareholders approved an annual dividend for the following year of up to $ 2.76 per share and $ 2.68 per share, respectively, which were paid in four quarterly installments of $ 0.69 per share and $ 0.67 per share, respectively, at dates determined by the Board of Directors (Board) after the annual general meetings by way of a distribution from capital contribution reserves, transferred to free reserves for payment.

At our May 2017 annual general meeting, our shareholders approved an annual dividend for the following year of up to $2.84 per share, expected to be paid in four quarterly installments of $0.71 per share after the annual general meeting by way of distribution from capital contribution reserves, transferred to free reserves for payment. The Board will determine the record and payment dates at which the annual dividend may be paid until the date of the 2018 annual general meeting, and is authorized to abstain from distributing a dividend at its discretion.

The following table presents dividend distributions per Common Share in Swiss francs (CHF) and U.S. dollars (USD):

																												
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017	 	 	2016	 	 	2017	 	 	2016	 	
	CHF		 	USD		 	CHF		 	USD		 	CHF		 	USD		 	CHF		 	USD		
Total dividend distributions per common share	0.68		 	$	0.71		 	0.67		 	$	0.69		 	2.06		 	$	2.11		 	2.01		 	$	2.05		

Common Shares in treasury are used principally for issuance upon the exercise of employee stock options, grants of restricted stock, and purchases under the Employee Stock Purchase Plan (ESPP). At September 30, 2017 , 15,625,345 Common Shares remain in treasury after net shares redeemed under employee share-based compensation plans.

Chubb Limited securities repurchase authorization
There was no share repurchase program from January 2016 through October 2016. In November 2016, the Board authorized a share repurchase program of $1.0 billion of Chubb's Common Shares through December 31, 2017.

33

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Repurchases of Chubb's Common Shares conducted in a series of open market transactions from January 1, 2017 through October 31, 2017 under the Board authorization are as follows:

												
(in millions of U.S. dollars, except share data)	Three Months Ended
September 30, 2017		 	Nine Months Ended
September 30, 2017		 	October 1, 2017
through
October 31, 2017		
			 			 			
Number of shares repurchased	1,615,383		 	5,033,013		 	25,000		
Cost of shares repurchased	$	232		 	$	707		 	$	4		
Repurchase authorization remaining at end of period	$	293		 	$	293		 	$	289		

8 . Share-based compensation

The Chubb Limited 2016 Long-Term Incentive Plan (the 2016 LTIP) permits grants of incentive and non-qualified stock options; restricted stock and restricted stock units; and performance-based restricted stock awards. The incentive and non-qualified stock options are granted principally at an option price per share equal to the grant date fair value of Chubb's Common Shares. Stock options are generally granted with a 3-year vesting period and a 10-year term and typically vest in equal annual installments over the vesting period, which is also the requisite service period. On February 23, 2017 , Chubb granted 2,065,620 stock options with a weighted-average grant date fair value of $22.97 each estimated using the Black-Scholes option pricing model. The service-based restricted stock and restricted stock units are generally granted with a 4-year vesting period, based on a graded vesting schedule.

Performance-based restricted stock awards granted prior to January 2017 comprised target awards which have four installments that vest annually based on tangible book value (shareholders' equity less goodwill and intangible assets, net of tax) per share growth compared to a defined group of peer companies, and premium awards, which are earned only if tangible book value per share growth over the cumulative 4-year period after the grant of the associated target awards exceeds a higher threshold compared to our peer group. The terms of performance-based restricted stock awards granted beginning in January 2017 were updated to now include a 3-year cliff vesting provision in place of the 4-year graded vesting period. In addition, these awards now include an additional vesting criteria based on the P&C combined ratio compared to a defined group of peer companies as well as an additional vesting provision for premium awards based on total shareholder return (TSR) compared to a defined group of peer companies.

Chubb's restricted stock is granted at market close price on the grant date. On February 23, 2017 , Chubb granted 1,105,118 service-based restricted stock awards, 326,272 service-based restricted stock units, and 202,251 performance-based stock awards to employees and officers with a grant date fair value of $139.01 each. Each restricted stock unit represents our obligation to deliver to the holder one Common Share upon vesting.

34

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

9 . Postretirement benefits

The components of net pension and other postretirement benefit costs (benefits) reflected in Net income in the Consolidated statements of operations were as follows:

																								
 	Three Months Ended September 30	 	
 	Pension Benefits	 	 	Other Postretirement Benefits	 	
 	U.S. Plans		 	Non-U.S. Plans		 	Total		 	U.S. Plans		 	Non-U.S. Plans		 	Total		
(in millions of U.S. dollars)			 			 			 			 			 			
2017	 	 	 	 	 	 	 	 	 	 	 	
Service cost	$	15		 	$	6		 	$	21		 	$	—		 	$	—		 	$	—		
Interest cost	27		 	6		 	33		 	1		 	1		 	2		
Expected return on plan assets	(47	)	 	(11	)	 	(58	)	 	(2	)	 	—		 	(2	)	
Amortization of net actuarial loss	—		 	1		 	1		 	—		 	—		 	—		
Amortization of prior service cost	—		 	—		 	—		 	(22	)	 	—		 	(22	)	
Curtailments	—		 	—		 	—		 	(32	)	 	—		 	(32	)	
Net periodic (benefit) cost	$	(5	)	 	$	2		 	$	(3	)	 	$	(55	)	 	$	1		 	$	(54	)	
2016	 	 	 	 	 	 	 	 	 	 	 	
Service cost	$	20		 	$	6		 	$	26		 	$	4		 	$	—		 	$	4		
Interest cost	26		 	8		 	34		 	4		 	—		 	4		
Expected return on plan assets	(42	)	 	(10	)	 	(52	)	 	(3	)	 	—		 	(3	)	
Amortization of net actuarial loss	—		 	—		 	—		 	—		 	—		 	—		
Curtailments	(4	)	 	—		 	(4	)	 	—		 	—		 	—		
Settlements	(1	)	 	—		 	(1	)	 	—		 	—		 	—		
Net periodic (benefit) cost	$	(1	)	 	$	4		 	$	3		 	$	5		 	$	—		 	$	5		

																								
 	Nine Months Ended September 30	 	
 	Pension Benefits	 	 	Other Postretirement Benefits	 	
 	U.S. Plans		 	Non-U.S. Plans		 	Total		 	U.S. Plans		 	Non-U.S. Plans		 	Total		
(in millions of U.S. dollars)			 			 			 			 			 			
2017	 	 	 	 	 	 	 	 	 	 	 	
Service cost	$	47		 	$	14		 	$	61		 	$	1		 	$	1		 	$	2		
Interest cost	79		 	20		 	99		 	2		 	1		 	3		
Expected return on plan assets	(142	)	 	(31	)	 	(173	)	 	(4	)	 	—		 	(4	)	
Amortization of net actuarial loss	—		 	2		 	2		 	—		 	—		 	—		
Amortization of prior service cost	—		 	—		 	—		 	(68	)	 	—		 	(68	)	
Curtailments	—		 	(8	)	 	(8	)	 	(32	)	 	—		 	(32	)	
Net periodic (benefit) cost	$	(16	)	 	$	(3	)	 	$	(19	)	 	$	(101	)	 	$	2		 	$	(99	)	
2016	 	 	 	 	 	 	 	 	 	 	 	
Service cost	$	57		 	$	15		 	$	72		 	$	8		 	$	1		 	$	9		
Interest cost	80		 	24		 	104		 	13		 	—		 	13		
Expected return on plan assets	(121	)	 	(30	)	 	(151	)	 	(7	)	 	—		 	(7	)	
Amortization of net actuarial loss	—		 	2		 	2		 	—		 	—		 	—		
Curtailments	(4	)	 	—		 	(4	)	 	—		 	—		 	—		
Settlements	(1	)	 	—		 	(1	)	 	—		 	—		 	—		
Net periodic cost	$	11		 	$	11		 	$	22		 	$	14		 	$	1		 	$	15		

35

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

10 . Segment information

Chubb operates through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance.

Corporate primarily includes loss and loss expenses of asbestos and environmental (A&E) run-off liabilities, and the results of our non-insurance companies including Chubb Limited, Chubb Group Management and Holdings Ltd, and Chubb INA Holdings Inc. Our exposure to A&E claims principally arises out of liabilities acquired when we purchased Westchester Specialty in 1998, CIGNA’s P&C business in 1999, and legacy Chubb Corp run-off business in 2016.

For segment reporting purposes, certain items are presented in a different manner below than in the consolidated financial statements. Management uses underwriting income as the main measures of segment performance. Chubb calculates underwriting income by subtracting Losses and loss expenses, Policy benefits, Policy acquisition costs, and Administrative expenses from Net premiums earned. To calculate segment income, include Net investment income, Other (income) expense, and Amortization of purchased intangibles. For the North America Agricultural Insurance segment, management includes gains and losses on crop derivatives as a component of underwriting income. For example, for the three months ended September 30, 2017, underwriting income in our North America Agricultural Insurance segment was $86 million . This amount includes $5 million of realized losses related to crop derivatives which are reported in Net realized gains (losses) in the Corporate column below.

For the Life Insurance segment, management includes Net investment income and (Gains) losses from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP as components of Life Insurance underwriting income. For example, for the three months ended September 30, 2017, Life Insurance underwriting income of $70 million includes Net investment income of $78 million and gains from fair value changes in separate account assets of $24 million . The gains from fair value changes in separate account assets are reported in Other (income) expense in the table below.

The following tables present the Statement of Operations by segment:

																																
 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	North America Agricultural Insurance		 	Overseas General Insurance		 	Global
Reinsurance		 	Life Insurance		 	Corporate		 	Chubb
Consolidated		
For the Three Months Ended			 						 			 			 			 			 			
September 30, 2017			 						 			 			 			 			 			
(in millions of U.S. dollars)			 						 			 			 			 			 			
Net premiums written	$	3,089		 	$	1,194		 	$	926		 	$	1,963		 	$	191		 	$	539		 	$	—		 	$	7,902		
Net premiums earned	3,016		 	1,117		 	898		 	2,064		 	185		 	527		 	—		 	7,807		
Losses and loss expenses	2,580		 	1,062		 	759		 	1,281		 	295		 	181		 	89		 	6,247		
Policy benefits	—		 	—		 	—		 	—		 	—		 	169		 	—		 	169		
Policy acquisition costs	469		 	226		 	49		 	569		 	43		 	132		 	—		 	1,488		
Administrative expenses	256		 	61		 	(1	)	 	246		 	11		 	77		 	64		 	714		
Underwriting income (loss)	(289	)	 	(232	)	 	91		 	(32	)	 	(164	)	 	(32	)	 	(153	)	 	(811	)	
Net investment income (loss)	497		 	57		 	6		 	164		 	80		 	78		 	(69	)	 	813		
Other (income) expense	(4	)	 	1		 	—		 	(10	)	 	(3	)	 	(19	)	 	(83	)	 	(118	)	
Amortization expense of purchased intangibles	—		 	4		 	8		 	11		 	—		 	1		 	41		 	65		
Segment income (loss)	$	212			$	(180	)		$	89			$	131			$	(81	)		$	64			$	(180	)		$	55		
Net realized gains (losses) including OTTI	 	 	 	 	 	 	 	 	 	 	 	 	(10	)	 	(10	)	
Interest expense	 	 	 	 	 	 	 	 	 	 	 	 	150		 	150		
Chubb integration expenses	 	 	 	 	 	 	 	 	 	 	 	 	50		 	50		
Income tax benefit	 	 	 	 	 	 	 	 	 	 	 	 	(85	)	 	(85	)	
Net loss	 	 	 	 	 	 	 	 	 	 	 	 	$	(305	)	 	$	(70	)	

36

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

	
																																
 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	North America Agricultural Insurance		 	Overseas General Insurance		 	Global
Reinsurance		 	Life Insurance		 	Corporate		 	Chubb
Consolidated		
For the Three Months Ended									 			 			 			 			 			
September 30, 2016									 			 			 			 			 			
(in millions of U.S. dollars)									 			 			 			 			 			
Net premiums written	$	3,110		 	$	1,011		 	$	849		 	$	1,940		 	$	131		 	$	532		 	$	—		 	$	7,573		
Net premiums earned	3,086		 	1,081		 	819		 	2,034		 	156		 	512		 	—		 	7,688		
Losses and loss expenses	1,863		 	594		 	683		 	843		 	49		 	174		 	63		 	4,269		
Policy benefits	—		 	—		 	—		 	—		 	—		 	155		 	—		 	155		
Policy acquisition costs	522		 	229		 	48		 	546		 	42		 	127		 	—		 	1,514		
Administrative expenses	275		 	89		 	1		 	261		 	12		 	77		 	57		 	772		
Underwriting income (loss)	426		 	169		 	87		 	384		 	53		 	(21	)	 	(120	)	 	978		
Net investment income (loss)	477		 	53		 	5		 	152		 	67		 	71		 	(86	)	 	739		
Other (income) expense	3		 	2		 	—		 	(6	)	 	—		 	(20	)	 	(70	)	 	(91	)	
Amortization expense (benefit) of purchased intangibles	—		 	4		 	7		 	12		 	—		 	1		 	(20	)	 	4		
Segment income (loss)	$	900		 	$	216		 	$	85		 	$	530		 	$	120		 	$	69		 	$	(116	)	 	$	1,804		
Net realized gains (losses) including OTTI	 	 	 	 	 	 	 	 	 	 	 	 	100		 	100		
Interest expense	 	 	 	 	 	 	 	 	 	 	 	 	152		 	152		
Chubb integration expenses	 	 	 	 	 	 	 	 	 	 	 	 	115		 	115		
Income tax expense	 	 	 	 	 	 	 	 	 	 	 	 	277		 	277		
Net income (loss)			 	 	 	 	 	 	 	 	 	 	 	$	(560	)	 	$	1,360		

	
																																
 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	North America Agricultural Insurance		 	Overseas General Insurance		 	Global
Reinsurance		 	Life Insurance		 	Corporate		 	Chubb
Consolidated		
For the Nine Months Ended									 			 			 			 			 			
September 30, 2017									 			 			 			 			 			
(in millions of U.S. dollars)									 			 			 			 			 			
Net premiums written	$	9,035		 	$	3,433		 	$	1,390		 	$	6,169		 	$	580		 	$	1,586		 	$	—		 	$	22,193		
Net premiums earned	9,156		 	3,296		 	1,256		 	6,018		 	542		 	1,548		 	—		 	21,816		
Losses and loss expenses	6,376		 	2,378		 	976		 	3,316		 	435		 	556		 	145		 	14,182		
Policy benefits	—		 	—		 	—		 	—		 	—		 	500		 	—		 	500		
Policy acquisition costs	1,420		 	673		 	75		 	1,653		 	137		 	376		 	—		 	4,334		
Administrative expenses	728		 	192		 	(4	)	 	734		 	33		 	226		 	187		 	2,096		
Underwriting income (loss)	632		 	53		 	209		 	315		 	(63	)	 	(110	)	 	(332	)	 	704		
Net investment income (loss)	1,465		 	168		 	18		 	460		 	207		 	230		 	(220	)	 	2,328		
Other (income) expense	(4	)	 	3		 	1		 	(14	)	 	(2	)	 	(60	)	 	(257	)	 	(333	)	
Amortization expense of purchased intangibles	—		 	12		 	22		 	33		 	—		 	2		 	125		 	194		
Segment income (loss)	$	2,101		 	$	206		 	$	204		 	$	756		 	$	146		 	$	178		 	$	(420	)	 	$	3,171		
Net realized gains (losses) including OTTI	 	 	 	 	 	 	 	 	 	 	 	 	84		 	84		
Interest expense	 	 	 	 	 	 	 	 	 	 	 	 	451		 	451		
Chubb integration expenses	 	 	 	 	 	 	 	 	 	 	 	 	233		 	233		
Income tax expense	 	 	 	 	 	 	 	 	 	 	 	 	243		 	243		
Net income (loss)	 	 	 	 	 	 	 	 	 	 	 	 	$	(1,263	)	 	$	2,328		

37

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

	
																																
 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	North America Agricultural Insurance		 	Overseas General Insurance		 	Global
Reinsurance		 	Life Insurance		 	Corporate		 	Chubb
Consolidated		
For the Nine Months Ended									 			 			 			 			 			
September 30, 2016									 			 			 			 			 			
(in millions of U.S. dollars)									 			 			 			 			 			
Net premiums written	$	8,657		 	$	3,113		 	$	1,288		 	$	6,012		 	$	562		 	$	1,575		 	$	—		 	$	21,207		
Net premiums earned	9,130		 	3,245		 	1,169		 	6,082		 	543		 	1,521		 	—		 	21,690		
Losses and loss expenses	5,581		 	1,916		 	937		 	2,953		 	225		 	498		 	87		 	12,197		
Policy benefits	—		 	—		 	—		 	—		 	—		 	427		 	—		 	427		
Policy acquisition costs	1,549		 	747		 	77		 	1,586		 	142		 	386		 	—		 	4,487		
Administrative expenses	840		 	275		 	(1	)	 	801		 	40		 	226		 	192		 	2,373		
Underwriting income (loss)	1,160		 	307		 	156		 	742		 	136		 	(16	)	 	(279	)	 	2,206		
Net investment income (loss)	1,371		 	155		 	15		 	445		 	199		 	207		 	(271	)	 	2,121		
Other (income) expense	(6	)	 	6		 	—		 	(16	)	 	(3	)	 	(14	)	 	(59	)	 	(92	)	
Amortization expense (benefit) of purchased intangibles	—		 	16		 	22		 	36		 	—		 	2		 	(60	)	 	16		
Segment income (loss)	$	2,537		 	$	440		 	$	149		 	$	1,167		 	$	338		 	$	203		 	$	(431	)	 	$	4,403		
Net realized gains (losses) including OTTI	 	 	 	 	 	 	 	 	 	 	 	 	(510	)	 	(510	)	
Interest expense	 	 	 	 	 	 	 	 	 	 	 	 	451		 	451		
Chubb integration expenses	 	 	 	 	 	 	 	 	 	 	 	 	361		 	361		
Income tax expense	 	 	 	 	 	 	 	 	 	 	 	 	556		 	556		
Net income (loss)	 	 	 	 	 	 	 	 	 	 	 		$	(2,309	)	 	$	2,525		

Underwriting assets are reviewed in total by management for purposes of decision-making. Other than Unpaid losses and loss expenses, Reinsurance recoverables, Goodwill and Other intangible assets, Chubb does not allocate assets to its segments.

11 . Earnings per share

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars, except share and per share data)	2017		 	2016		 	2017		 	2016		
Numerator:	 	 	 	 	 	 	 	
Net income (loss)	$	(70	)	 	$	1,360		 	$	2,328		 	$	2,525		
Denominator:	 	 	 	 	 	 	 	
Denominator for basic earnings per share:	 	 	 	 	 	 	 	
Weighted-average shares outstanding	466,370,784		 	468,021,093		 	467,658,334		 	460,631,794		
Denominator for diluted earnings per share:	 	 	 	 	 	 	 	
Share-based compensation plans	—		 	3,375,269		 	3,961,572		 	3,439,017		
Weighted-average shares outstanding and assumed conversions	466,370,784		 	471,396,362		 	471,619,906		 	464,070,811		
Basic earnings (loss) per share	$	(0.15	)	 	$	2.90		 	$	4.98		 	$	5.48		
Diluted earnings (loss) per share	$	(0.15	)	 	$	2.88		 	$	4.94		 	$	5.44		
Potential anti-dilutive share conversions	2,045,829		 	1,306,710		 	1,673,777		 	1,635,337		

Excluded from weighted-average shares outstanding and assumed conversions is the impact of securities that would have been anti-dilutive during the respective periods. In addition, for the three months ended September 30, 2017, weighted-average shares outstanding used in calculating diluted loss per share excludes the effect of dilutive securities of 3,820,673 shares. In periods where a net loss is recognized, inclusion of incremental dilution is antidilutive.

38

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

12 . Information provided in connection with outstanding debt of subsidiaries

The following tables present condensed consolidating financial information at September 30, 2017 and December 31, 2016 , and for the three and nine months ended September 30, 2017 and 2016 for Chubb Limited (Parent Guarantor) and Chubb INA Holdings Inc. (Subsidiary Issuer). The Subsidiary Issuer is an indirect 100 percent-owned subsidiary of the Parent Guarantor. The Parent Guarantor fully and unconditionally guarantees certain of the debt of the Subsidiary Issuer. Condensed consolidating financial information of the Parent Guarantor and Subsidiary Issuer are presented on the equity method of accounting. The revenues and expenses and cash flows of the subsidiaries of the Subsidiary Issuer are presented in the Other Chubb Limited Subsidiaries column on a combined basis.

Condensed Consolidating Balance Sheet at September 30, 2017 

																				
(in millions of U.S. dollars)	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb Limited
Consolidated		
Assets	 	 	 	 	 	 	 	 	 	
Investments	$	—		 	$	169		 	$	102,255		 	$	—		 	$	102,424		
Cash (1)	1		 	—		 	1,174		 	(87	)	 	1,088		
Insurance and reinsurance balances receivable	—		 	—		 	11,076		 	(1,525	)	 	9,551		
Reinsurance recoverable on losses and loss expenses	—		 	—		 	27,007		 	(12,208	)	 	14,799		
Reinsurance recoverable on policy benefits	—		 	—		 	1,232		 	(1,039	)	 	193		
Value of business acquired	—		 	—		 	339		 	—		 	339		
Goodwill and other intangible assets	—		 	—		 	22,265		 	—		 	22,265		
Investments in subsidiaries	40,936		 	50,926		 	—		 	(91,862	)	 	—		
Due from subsidiaries and affiliates, net	9,913		 	—		 	—		 	(9,913	)	 	—		
Other assets	61		 	276		 	20,699		 	(4,117	)	 	16,919		
Total assets	$	50,911		 	$	51,371		 	$	186,047		 	$	(120,751	)	 	$	167,578		
Liabilities	 	 	 	 	 	 	 	 	 	
Unpaid losses and loss expenses	$	—		 	$	—		 	$	75,688		 	$	(11,535	)	 	$	64,153		
Unearned premiums	—		 	—		 	19,150		 	(3,694	)	 	15,456		
Future policy benefits	—		 	—		 	6,346		 	(1,039	)	 	5,307		
Due to subsidiaries and affiliates, net	—		 	9,697		 	216		 	(9,913	)	 	—		
Affiliated notional cash pooling programs (1)	85		 	2		 	—		 	(87	)	 	—		
Repurchase agreements	—		 	—		 	1,408		 	—		 	1,408		
Short-term debt	—		 	1,020		 	—		 	—		 	1,020		
Long-term debt	—		 	11,548		 	11		 	—		 	11,559		
Trust preferred securities	—		 	308		 	—		 	—		 	308		
Other liabilities	355		 	1,685		 	18,477		 	(2,621	)	 	17,896		
Total liabilities	440		 	24,260		 	121,296		 	(28,889	)	 	117,107		
Total shareholders’ equity	50,471		 	27,111		 	64,751		 	(91,862	)	 	50,471		
Total liabilities and shareholders’ equity	$	50,911		 	$	51,371		 	$	186,047		 	$	(120,751	)	 	$	167,578		
		
(1)  	Chubb maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At September 30, 2017 , the cash balance of one or more entities was negative; however, the overall Pool balances were positive.	

39

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Condensed Consolidating Balance Sheet at December 31, 2016

																				
(in millions of U.S. dollars)	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb Limited
Consolidated		
Assets	 	 	 	 	 	 	 	 	 	
Investments	$	27		 	$	485		 	$	98,582		 	$	—		 	$	99,094		
Cash (1)	1		 	1		 	1,965		 	(982	)	 	985		
Insurance and reinsurance balances receivable	—		 	—		 	10,498		 	(1,528	)	 	8,970		
Reinsurance recoverable on losses and loss expenses	—		 	—		 	24,496		 	(10,919	)	 	13,577		
Reinsurance recoverable on policy benefits	—		 	—		 	1,153		 	(971	)	 	182		
Value of business acquired	—		 	—		 	355		 	—		 	355		
Goodwill and other intangible assets	—		 	—		 	22,095		 	—		 	22,095		
Investments in subsidiaries	38,408		 	49,509		 	—		 	(87,917	)	 	—		
Due from subsidiaries and affiliates, net	10,482		 	—		 	—		 	(10,482	)	 	—		
Other assets	3		 	436		 	18,442		 	(4,353	)	 	14,528		
Total assets	$	48,921		 	$	50,431		 	$	177,586		 	$	(117,152	)	 	$	159,786		
Liabilities	 	 	 	 	 	 	 	 	 	
Unpaid losses and loss expenses	$	—		 	$	—		 	$	70,683		 	$	(10,143	)	 	$	60,540		
Unearned premiums	—		 	—		 	18,538		 	(3,759	)	 	14,779		
Future policy benefits	—		 	—		 	6,007		 	(971	)	 	5,036		
Due to subsidiaries and affiliates, net	—		 	10,209		 	273		 	(10,482	)	 	—		
Affiliated notional cash pooling programs (1)	363		 	619		 	—		 	(982	)	 	—		
Repurchase agreements	—		 	—		 	1,403		 	—		 	1,403		
Short-term debt	—		 	500		 	—		 	—		 	500		
Long-term debt	—		 	12,599		 	11		 	—		 	12,610		
Trust preferred securities	—		 	308		 	—		 	—		 	308		
Other liabilities	283		 	1,582		 	17,368		 	(2,898	)	 	16,335		
Total liabilities	646		 	25,817		 	114,283		 	(29,235	)	 	111,511		
Total shareholders’ equity	48,275		 	24,614		 	63,303		 	(87,917	)	 	48,275		
Total liabilities and shareholders’ equity	$	48,921		 	$	50,431		 	$	177,586		 	$	(117,152	)	 	$	159,786		
		
(1)  	Chubb maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At December 31, 2016 , the cash balance of one or more entities was negative; however, the overall Pool balances were positive.	

40

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Condensed Consolidating Statements of Operations and Comprehensive Income

																				
For the Three Months Ended September 30, 2017	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb
Limited
Consolidated		
(in millions of U.S. dollars)			 			 			 			 			
Net premiums written	$	—		 	$	—		 	$	7,902		 	$	—		 	$	7,902		
Net premiums earned	—		 	—		 	7,807		 	—		 	7,807		
Net investment income	1		 	3		 	809		 	—		 	813		
Equity in earnings of subsidiaries	(127	)	 	212		 	—		 	(85	)	 	—		
Net realized gains (losses) including OTTI	—		 	(8	)	 	(2	)	 	—		 	(10	)	
Losses and loss expenses	—		 	—		 	6,247		 	—		 	6,247		
Policy benefits	—		 	—		 	169		 	—		 	169		
Policy acquisition costs and administrative expenses	20		 	16		 	2,166		 	—		 	2,202		
Interest (income) expense	(84	)	 	208		 	26		 	—		 	150		
Other (income) expense	(5	)	 	9		 	(122	)	 	—		 	(118	)	
Amortization of purchased intangibles	—		 	—		 	65		 	—		 	65		
Chubb integration expenses	7		 	1		 	42		 	—		 	50		
Income tax expense (benefit)	6		 	(89	)	 	(2	)	 	—		 	(85	)	
Net income (loss)	$	(70	)	 	$	62		 	$	23		 	$	(85	)	 	$	(70	)	
Comprehensive income	$	629		 	$	748		 	$	724		 	$	(1,472	)	 	$	629		

Condensed Consolidating Statements of Operations and Comprehensive Income 

																				
For the Three Months Ended September 30, 2016	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb
Limited
Consolidated		
(in millions of U.S. dollars)			 			 			 			 			
Net premiums written	$	—		 	$	—		 	$	7,573		 	$	—		 	$	7,573		
Net premiums earned	—		 	—		 	7,688		 	—		 	7,688		
Net investment income	1		 	2		 	736		 	—		 	739		
Equity in earnings of subsidiaries	1,292		 	748		 	—		 	(2,040	)	 	—		
Net realized gains (losses) including OTTI	—		 	(2	)	 	102		 	—		 	100		
Losses and loss expenses	—		 	—		 	4,269		 	—		 	4,269		
Policy benefits	—		 	—		 	155		 	—		 	155		
Policy acquisition costs and administrative expenses	15		 	12		 	2,259		 	—		 	2,286		
Interest (income) expense	(93	)	 	233		 	12		 	—		 	152		
Other (income) expense	(7	)	 	6		 	(90	)	 	—		 	(91	)	
Amortization of purchased intangibles	—		 	—		 	4		 	—		 	4		
Chubb integration expenses	12		 	16		 	87		 	—		 	115		
Income tax expense (benefit)	6		 	(136	)	 	407		 	—		 	277		
Net income	$	1,360		 	$	617		 	$	1,423		 	$	(2,040	)	 	$	1,360		
Comprehensive income	$	1,376		 	$	627		 	$	1,439		 	$	(2,066	)	 	$	1,376		

41

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Condensed Consolidating Statements of Operations and Comprehensive Income

																				
For the Nine Months Ended September 30, 2017	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb
Limited
Consolidated		
(in millions of U.S. dollars)			 			 			 			 			
Net premiums written	$	—		 	$	—		 	$	22,193		 	$	—		 	$	22,193		
Net premiums earned	—		 	—		 	21,816		 	—		 	21,816		
Net investment income	3		 	10		 	2,315		 	—		 	2,328		
Equity in earnings of subsidiaries	2,153		 	1,578		 	—		 	(3,731	)	 	—		
Net realized gains (losses) including OTTI	(2	)	 	(22	)	 	108		 	—		 	84		
Losses and loss expenses	—		 	—		 	14,182		 	—		 	14,182		
Policy benefits	—		 	—		 	500		 	—		 	500		
Policy acquisition costs and administrative expenses	56		 	28		 	6,346		 	—		 	6,430		
Interest (income) expense	(252	)	 	641		 	62		 	—		 	451		
Other (income) expense	(7	)	 	34		 	(360	)	 	—		 	(333	)	
Amortization of purchased intangibles	—		 	—		 	194		 	—		 	194		
Chubb integration expenses	13		 	54		 	166		 	—		 	233		
Income tax expense (benefit)	16		 	(288	)	 	515		 	—		 	243		
Net income	$	2,328		 	$	1,097		 	$	2,634		 	$	(3,731	)	 	$	2,328		
Comprehensive income	$	3,711		 	$	2,459		 	$	4,018		 	$	(6,477	)	 	$	3,711		

Condensed Consolidating Statements of Operations and Comprehensive Income

																				
For the Nine Months Ended September 30, 2016	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb
Limited
Consolidated		
(in millions of U.S. dollars)			 			 			 			 			
Net premiums written	$	—		 	$	—		 	$	21,207		 	$	—		 	$	21,207		
Net premiums earned	—		 	—		 	21,690		 	—		 	21,690		
Net investment income	3		 	9		 	2,109		 	—		 	2,121		
Equity in earnings of subsidiaries	2,331		 	1,803		 	—		 	(4,134	)	 	—		
Net realized gains (losses) including OTTI	(1	)	 	(3	)	 	(506	)	 	—		 	(510	)	
Losses and loss expenses	—		 	—		 	12,197		 	—		 	12,197		
Policy benefits	—		 	—		 	427		 	—		 	427		
Policy acquisition costs and administrative expenses	48		 	144		 	6,668		 	—		 	6,860		
Interest (income) expense	(266	)	 	681		 	36		 	—		 	451		
Other (income) expense	(20	)	 	26		 	(98	)	 	—		 	(92	)	
Amortization of purchased intangibles	—		 	—		 	16		 	—		 	16		
Chubb integration expenses	29		 	56		 	276		 	—		 	361		
Income tax expense (benefit)	17		 	(323	)	 	862		 	—		 	556		
Net income	$	2,525		 	$	1,225		 	$	2,909		 	$	(4,134	)	 	$	2,525		
Comprehensive income	$	4,457		 	$	2,687		 	$	4,841		 	$	(7,528	)	 	$	4,457		

42

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Condensed Consolidating Statement of Cash Flows

																				
Nine Months Ended September 30, 2017	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb
Limited
Consolidated		
(in millions of U.S. dollars)			 			 			 			 			
Net cash flows from operating activities	$	639		 	$	1,472		 	$	3,341		 	$	(2,041	)	 	$	3,411		
Cash flows from investing activities	 	 	 	 	 	 	 	 	 	
Purchases of fixed maturities available for sale	—		 	(9	)	 	(18,469	)	 	—		 	(18,478	)	
Purchases of fixed maturities held to maturity	—		 	—		 	(262	)	 	—		 	(262	)	
Purchases of equity securities	—		 	—		 	(125	)	 	—		 	(125	)	
Sales of fixed maturities available for sale	—		 	99		 	9,116		 	—		 	9,215		
Sales of equity securities	—		 	—		 	152		 	—		 	152		
Maturities and redemptions of fixed maturities available for sale	—		 	22		 	7,677		 	—		 	7,699		
Maturities and redemptions of fixed maturities held to maturity	—		 	—		 	644		 	—		 	644		
Net change in short-term investments	—		 	197		 	(153	)	 	—		 	44		
Net derivative instruments settlements	—		 	(13	)	 	(157	)	 	—		 	(170	)	
Other	—		 	6		 	(68	)	 	—		 	(62	)	
Net cash flows from (used for) investing activities	—		 	302		 	(1,645	)	 	—		 	(1,343	)	
Cash flows from financing activities	 	 	 	 	 	 	 	 	 	
Dividends paid on Common Shares	(978	)	 	—		 	—		 	—		 	(978	)	
Common Shares repurchased	—		 	—		 	(707	)	 	—		 	(707	)	
Repayment of long-term debt	—		 	(500	)	 	—		 	—		 	(500	)	
Proceeds from issuance of repurchase agreements	—		 	—		 	1,798		 	—		 	1,798		
Repayment of repurchase agreements	—		 	—		 	(1,793	)	 	—		 	(1,793	)	
Proceeds from share-based compensation plans	—		 	—		 	109		 	—		 	109		
Dividend to parent company	—		 	—		 	(2,041	)	 	2,041		 	—		
Advances (to) from affiliates	617		 	(658	)	 	41		 	—		 	—		
Net payments to affiliated notional cash pooling programs (1)	(278	)	 	(617	)	 	—		 	895		 	—		
Policyholder contract deposits	—		 	—		 	312		 	—		 	312		
Policyholder contract withdrawals	—		 	—		 	(211	)	 	—		 	(211	)	
Net cash flows used for financing activities	(639	)	 	(1,775	)	 	(2,492	)	 	2,936		 	(1,970	)	
Effect of foreign currency rate changes on cash and cash equivalents	—		 	—		 	5		 	—		 	5		
Net increase (decrease) in cash	—		 	(1	)	 	(791	)	 	895		 	103		
Cash – beginning of period (1)	1		 	1		 	1,965		 	(982	)	 	985		
Cash – end of period (1)	$	1		 	$	—		 	$	1,174		 	$	(87	)	 	$	1,088		
		
(1)  	Chubb maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At September 30, 2017 and December 31, 2016, the cash balance of one or more entities was negative; however, the overall Pool balances were positive.	

43

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – continued (Unaudited)
Chubb Limited and Subsidiaries

Condensed Consolidating Statement of Cash Flows

																				
Nine Months Ended September 30, 2016	Chubb
Limited
(Parent
Guarantor)		 	Chubb INA
Holdings Inc.
(Subsidiary
Issuer)		 	Other Chubb
Limited
Subsidiaries		 	Consolidating
Adjustments and Eliminations		 	Chubb
Limited
Consolidated		
(in millions of U.S. dollars)			 			 			 			 			
Net cash flows from operating activities	$	3,399		 	$	3,892		 	$	3,918		 	$	(7,372	)	 	$	3,837		
Cash flows from investing activities	 	 	 	 	 	 	 	 	 	
Purchases of fixed maturities available for sale	—		 	(154	)	 	(23,683	)	 	—		 	(23,837	)	
Purchases of fixed maturities held to maturity	—		 	—		 	(189	)	 	—		 	(189	)	
Purchases of equity securities	—		 	—		 	(100	)	 	—		 	(100	)	
Sales of fixed maturities available for sale	—		 	66		 	13,797		 	—		 	13,863		
Sales of equity securities	—		 	—		 	963		 	—		 	963		
Maturities and redemptions of fixed maturities
   available for sale	—		 	59		 	6,877		 	—		 	6,936		
Maturities and redemptions of fixed maturities held to maturity	—		 	—		 	627		 	—		 	627		
Net change in short-term investments	—		 	7,627		 	4,239		 	—		 	11,866		
Net derivative instruments settlements	—		 	(10	)	 	(171	)	 	—		 	(181	)	
Acquisition of subsidiaries (net of cash acquired of $71)	—		 	(14,282	)	 	34		 	—		 	(14,248	)	
Capital contribution	(2,330	)	 	(20	)	 	(2,330	)	 	4,680		 	—		
Other	—		 	(3	)	 	29		 	—		 	26		
Net cash flows from (used for) investing activities	(2,330	)	 	(6,717	)	 	93		 	4,680		 	(4,274	)	
Cash flows from financing activities	 	 	 	 	 	 	 	 	 	
Dividends paid on Common Shares	(851	)	 	—		 	—		 	—		 	(851	)	
Proceeds from issuance of repurchase agreements	—		 	—		 	1,457		 	—		 	1,457		
Repayment of repurchase agreements	—		 	—		 	(1,455	)	 	—		 	(1,455	)	
Proceeds from share-based compensation plans, including windfall tax benefits	—		 	—		 	117		 	—		 	117		
Dividend to parent company	—		 	—		 	(7,372	)	 	7,372		 	—		
Advances (to) from affiliates	(258	)	 	219		 	39		 	—		 	—		
Capital contribution	—		 	2,330		 	2,350		 	(4,680	)	 	—		
Net proceeds from (payments to) affiliated notional cash pooling programs (1)	45		 	280		 	—		 	(325	)	 	—		
Policyholder contract deposits	—		 	—		 	473		 	—		 	473		
Policyholder contract withdrawals	—		 	—		 	(247	)	 	—		 	(247	)	
Other	—		 	(4	)	 	—		 	—		 	(4	)	
Net cash flows from (used for) financing activities	(1,064	)	 	2,825		 	(4,638	)	 	2,367		 	(510	)	
Effect of foreign currency rate changes on cash and cash equivalents	—		 	—		 	42		 	—		 	42		
Net increase (decrease) in cash	5		 	—		 	(585	)	 	(325	)	 	(905	)	
Cash – beginning of period (1)	1		 	2		 	2,743		 	(971	)	 	1,775		
Cash – end of period (1)	$	6		 	$	2		 	$	2,158		 	$	(1,296	)	 	$	870		
		
(1)  	Chubb maintains two notional multicurrency cash pools (Pools) with a third-party bank. Various Chubb entities participate in one or the other of the Pools, pursuant to which credit and debit balances in individual Chubb accounts are translated daily into a single currency and pooled on a notional basis. Individual Chubb entities are permitted to overdraw on their individual accounts provided the overall Pool balances do not fall below zero. At September 30, 2016 and December 31, 2015, the cash balance of one or more entities was negative; however, the overall Pool balances were positive.	

44

Table of Contents

	
	
ITEM 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	

The following is a discussion of our results of operations, financial condition, and liquidity and capital resources as of and for the three and nine months ended September 30, 2017 .

All comparisons in this discussion are to the corresponding prior year period unless otherwise indicated.

Our results of operations and cash flows for any interim period are not necessarily indicative of our results for the full year. This discussion should be read in conjunction with our consolidated financial statements and related notes and our Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the year ended December 31, 2016 ( 2016 Form 10-K).

Other Information
We routinely post important information for investors on our website (investors.chubb.com). We use this website as a means of disclosing material, non-public information and for complying with our disclosure obligations under Securities and Exchange Commission (SEC) Regulation FD (Fair Disclosure). Accordingly, investors should monitor the Investor Information portion of our website, in addition to following our press releases, SEC filings, public conference calls, and webcasts. The information contained on, or that may be accessed through, our website is not incorporated by reference into, and is not a part of, this report.

		
MD&A Index	Page	
Forward-Looking Statements	46	
Overview	48	
Financial Highlights	48	
Consolidated Operating Results	49	
Integration-Related Savings	58	
Prior Period Development	60	
Segment Operating Results	61	
Other Income and Expense Items	76	
Amortization of Purchased Intangibles	76	
Net Investment Income	77	
Net Realized and Unrealized Gains (Losses)	78	
Investments	79	
Critical Accounting Estimates	82	
Reinsurance Recoverable on Ceded Reinsurance	82	
Unpaid Losses and Loss Expenses	83	
Asbestos and Environmental (A&E)	83	
Fair Value Measurements	83	
Catastrophe Management	84	
Natural Catastrophe Property Reinsurance Program	84	
Crop Insurance	85	
Liquidity	86	
Capital Resources	88	

45

Table of Contents

	
	
Forward-Looking Statements	
The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements. Any written or oral statements made by us or on our behalf may include forward-looking statements that reflect our current views with respect to future events and financial performance. These forward-looking statements are subject to certain risks, uncertainties, and other factors that could, should potential events occur, cause actual results to differ materially from such statements. These risks, uncertainties, and other factors, which are described in more detail elsewhere herein and in other documents we file with the U.S. Securities and Exchange Commission (SEC), include but are not limited to:
		
•	losses arising out of natural or man-made catastrophes such as hurricanes, typhoons, earthquakes, floods, climate change (including effects on weather patterns; greenhouse gases; sea; land and air temperatures; sea levels; and rain and snow), nuclear accidents, or terrorism which could be affected by:	
		
•	the number of insureds and ceding companies affected;	
		
•	the amount and timing of losses actually incurred and reported by insureds;	
		
•	the impact of these losses on our reinsurers and the amount and timing of reinsurance recoverable actually received;	
		
•	the cost of building materials and labor to reconstruct properties or to perform environmental remediation following a catastrophic event; and	
		
•	complex coverage and regulatory issues such as whether losses occurred from storm surge or flooding and related lawsuits;	
		
•	actions that rating agencies may take from time to time, such as financial strength or credit ratings downgrades or placing these ratings on credit watch negative or the equivalent;	
		
•	the ability to collect reinsurance recoverable, credit developments of reinsurers, and any delays with respect thereto and changes in the cost, quality, or availability of reinsurance;	
		
•	actual loss experience from insured or reinsured events and the timing of claim payments;	
		
•	the uncertainties of the loss-reserving and claims-settlement processes, including the difficulties associated with assessing environmental damage and asbestos-related latent injuries, the impact of aggregate-policy-coverage limits, the impact of bankruptcy protection sought by various asbestos producers and other related businesses, and the timing of loss payments;	
		
•	changes to our assessment as to whether it is more likely than not that we will be required to sell, or have the intent to sell, available for sale fixed maturity investments before their anticipated recovery;	
		
•	infection rates and severity of pandemics and their effects on our business operations and claims activity;	
		
•	developments in global financial markets, including changes in interest rates, stock markets, and other financial markets, increased government involvement or intervention in the financial services industry, the cost and availability of financing, and foreign currency exchange rate fluctuations (which we refer to in this report as foreign exchange and foreign currency exchange), which could affect our statement of operations, investment portfolio, financial condition, and financing plans;	
		
•	general economic and business conditions resulting from volatility in the stock and credit markets and the depth and duration of potential recession;	
		
•	global political conditions, the occurrence of any terrorist attacks, including any nuclear, radiological, biological, or chemical events, or the outbreak and effects of war, and possible business disruption or economic contraction that may result from such events;	
		
•	the potential impact of the United Kingdom’s vote to withdraw from the European Union, including political, regulatory, social, and economic uncertainty and market and exchange rate volatility;	
		
•	judicial decisions and rulings, new theories of liability, legal tactics, and settlement terms;	
		
•	the effects of public company bankruptcies and/or accounting restatements, as well as disclosures by and investigations of public companies relating to possible accounting irregularities, and other corporate governance issues, including the effects of such events on:	
		
•	the capital markets;	
		
•	the markets for directors and officers (D&O) and errors and omissions (E&O) insurance; and	
		
•	claims and litigation arising out of such disclosures or practices by other companies;	

46

Table of Contents

		
•	uncertainties relating to governmental, legislative and regulatory policies, developments, actions, investigations, and treaties, which, among other things, could subject us to insurance regulation or taxation in additional jurisdictions or affect our current operations;	
		
•	the actual amount of new and renewal business, market acceptance of our products, and risks associated with the introduction of new products and services and entering new markets, including regulatory constraints on exit strategies;	
		
•	the competitive environment in which we operate, including trends in pricing or in policy terms and conditions, which may differ from our projections and changes in market conditions that could render our business strategies ineffective or obsolete;	
		
•	acquisitions made by us performing differently than expected, our failure to realize anticipated expense-related efficiencies or growth from acquisitions, the impact of acquisitions on our pre-existing organization, or announced acquisitions not closing;	
		
•	risks and uncertainties relating to our acquisition of The Chubb Corporation (Chubb Corp acquisition) including our ability to successfully integrate the acquired company;	
		
•	risks associated with being a Swiss corporation, including reduced flexibility with respect to certain aspects of capital management and the potential for additional regulatory burdens;	
		
•	the potential impact from government-mandated insurance coverage for acts of terrorism;	
		
•	the availability of borrowings and letters of credit under our credit facilities;	
		
•	the adequacy of collateral supporting funded high deductible programs;	
		
•	changes in the distribution or placement of risks due to increased consolidation of insurance and reinsurance brokers;	
		
•	material differences between actual and expected assessments for guaranty funds and mandatory pooling arrangements;	
		
•	the effects of investigations into market practices in the property and casualty (P&C) industry;	
		
•	changing rates of inflation and other economic conditions, for example, recession;	
		
•	the amount of dividends received from subsidiaries;	
		
•	loss of the services of any of our executive officers without suitable replacements being recruited in a reasonable time frame;	
		
•	the ability of our technology resources, including information systems and security, to perform as anticipated such as with respect to preventing material information technology failures or third-party infiltrations or hacking resulting in consequences adverse to Chubb or its customers or partners; and	
		
•	management’s response to these factors and actual events (including, but not limited to, those described above).	
The words “believe,” “anticipate,” “estimate,” “project,” “should,” “plan,” “expect,” “intend,” “hope,” “feel,” “foresee,” “will likely result,” or “will continue,” and variations thereof and similar expressions, identify forward-looking statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of their dates. We undertake no obligation to publicly update or review any forward-looking statements, whether as a result of new information, future events, or otherwise.

47

Table of Contents

	
	
Overview	
Chubb Limited is the Swiss-incorporated holding company of the Chubb Group of Companies. Chubb Limited, which is headquartered in Zurich, Switzerland, and its direct and indirect subsidiaries (collectively, the Chubb Group of Companies, Chubb, we, us, or our) are a global insurance and reinsurance organization, serving the needs of a diverse group of clients worldwide. At September 30, 2017 , we had total assets of $168 billion and shareholders’ equity of $50 billion . Chubb was incorporated in 1985 at which time it opened its first business office in Bermuda and continues to maintain operations in Bermuda.

We operate through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. For more information on our segments refer to “Segment Information” under Item 1 in our 2016 Form 10-K.

	
	
Financial Highlights for the Three Months Ended September 30, 2017	

•	Net loss was $(70) million compared with net income of $1,360 million in the prior year period.	
		
•	Total company and P&C net premiums written were $7.9 billion and $7.4 billion, respectively, up 4.3 percent and 4.6 percent.	
		
•	Total pre-tax and after-tax catastrophe losses were $1,893 million (26.0 percentage points of the combined ratio) and $1,525 million, respectively, compared with $144 million (2.0 percentage points of the combined ratio) and $107 million, respectively, last year. Pre-tax catastrophe losses, net of reinsurance and including reinstatement premiums, included $650 million, $891 million, and $220 million from Hurricanes Harvey, Irma, and Maria, respectively, $25 million from the earthquakes in Mexico, and $107 million from other catastrophe losses.	
		
•	Since the acquisition of Chubb Corp, we have entered into new reinsurance agreements with third-party reinsurers for certain legacy Chubb Corp business, and have taken other merger-related underwriting actions, including exiting certain types of business that do not meet our underwriting standards or adhere to our risk diversification strategy. Together, these items adversely impacted P&C net premiums written growth by $87 million in the quarter. In addition, net premiums written growth was favorably impacted by $128 million from a one-time unearned premium reserve (UPR) transfer in 2016 which reduced net premiums written in the prior year. Excluding these items, P&C net premiums written were up 4.0 percent in constant dollars.	
		
•	P&C combined ratio was 110.8 percent compared with 86.0 percent in the prior year period. P&C current accident year combined ratio excluding catastrophe losses was 88.5 percent compared with 88.9 percent, last year.	
		
•	Total pre-tax and after-tax favorable prior period development was $270 million (3.7 percentage points of the combined ratio) and $206 million, respectively, compared with $349 million (4.9 percentage points of the combined ratio) and $252 million, respectively, last year.	
		
•	Net investment income was $813 million compared with $739 million in the prior year period. Excluding the amortization of the fair value adjustment on acquired invested assets of Chubb Corp, net investment income was $893 million, compared with $830 million, up 7.5 percent.	
		
•	Share repurchases totaled $232 million, or approximately 1.6 million shares, during the quarter, and $707 million, or 5.0 million shares, through September 30, 2017.	

48

Table of Contents

	
	
Consolidated Operating Results – Three and Nine Months Ended September 30, 2017 and 2016	

																						
 	Three Months Ended	 	 	 	 	Nine Months Ended	 	 	 	
 	September 30	 	 	% Change		 	September 30	 	 	% Change		
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16		 	2017		 	2016		 	YTD-17 vs.
YTD-16		
Net premiums written (1)	$	7,902		 	$	7,573		 	4.3	 %	 	$	22,193		 	$	21,207		 	4.7	 %	
Net premiums earned (1)	7,807		 	7,688		 	1.5	 %	 	21,816		 	21,690		 	0.6	 %	
Net investment income	813		 	739		 	9.8	 %	 	2,328		 	2,121		 	9.7	 %	
Net realized gains (losses)	(10	)	 	100		 	NM		 	84		 	(510	)	 	NM		
Total revenues	8,610		 	8,527		 	1.0	 %	 	24,228		 	23,301		 	4.0	 %	
Losses and loss expenses	6,247		 	4,269		 	46.3	 %	 	14,182		 	12,197		 	16.3	 %	
Policy benefits	169		 	155		 	9.0	 %	 	500		 	427		 	17.1	 %	
Policy acquisition costs	1,488		 	1,514		 	(1.7	)%	 	4,334		 	4,487		 	(3.4	)%	
Administrative expenses	714		 	772		 	(7.5	)%	 	2,096		 	2,373		 	(11.7	)%	
Interest expense	150		 	152		 	(1.3	)%	 	451		 	451		 	—		
Other (income) expense	(118	)	 	(91	)	 	29.7	 %	 	(333	)	 	(92	)	 	262.0	 %	
Amortization of purchased intangibles	65		 	4		 	NM		 	194		 	16		 	NM		
Chubb integration expenses	50		 	115		 	(56.5	)%	 	233		 	361		 	(35.5	)%	
Total expenses	8,765		 	6,890		 	27.2	 %	 	21,657		 	20,220		 	7.1	 %	
Income (loss) before income tax	(155	)	 	1,637		 	NM		 	2,571		 	3,081		 	(16.6	)%	
Income tax expense (benefit)	(85	)	 	277		 	NM		 	243		 	556		 	(56.3	)%	
Net income (loss)	$	(70	)	 	$	1,360		 	NM		 	$	2,328		 	$	2,525		 	(7.8	)%	
NM – not meaningful	 	 	 	 	 	 	 	 	 	 	 	
		
(1)  	On a constant-dollar basis for the three and nine months ended September 30, 2017 , net premiums written increased $331 million , or 4.3 percent, and $1,052 million , or 5.0 percent, respectively, and net premiums earned increased $109 million and $154 million , respectively. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period.	

Net Premiums Written
Net premiums written reflect the premiums we retain after purchasing reinsurance protection. Consolidated net premiums written increased $329 million and $986 million for the three and nine months ended September 30, 2017 reflecting growth across most segments. In addition, net premiums written for the nine months ended September 30, 2017 increased due to the timing of the Chubb Corp acquisition in the prior year, which excluded approximately $855 million of production generated prior to the Chubb Corp acquisition close on January 14, 2016 (14-day stub period). On a comparative basis, which includes the 14-day stub period, net premiums written increased $131 million . Merger-related underwriting actions of $96 million and $505 million for the three and nine months ended September 30, 2017, respectively, partially offset this growth. Merger-related underwriting actions include the cancellation of certain portfolios or lines of business that do not meet our underwriting standards and the purchase of additional reinsurance.

•	Net premiums written in our North America Commercial P&C Insurance segment decreased $21 million for the three months ended September 30, 2017 primarily due to merger-related underwriting actions ( $57 million ). Excluding these actions, net premiums written increased $36 million , primarily due to growth in our Major Accounts Risk Management and Wholesale businesses and in our Commercial Insurance workers’ compensation and casualty lines, which was partially offset by declines in our property and select components of our financial lines businesses due to competitive market conditions. Net premiums written increased $378 million for the nine months ended September 30, 2017 primarily reflecting the 14-day stub period ($519 million). On a comparative basis, which includes the 14-day stub period, net premiums written decreased $141 million driven by merger-related underwriting actions ( $225 million ). Excluding these items, net premiums written increased $84 million , or 0.9 percent, primarily due to the same factors driving the increase in the three months ended September 30, 2017 as described above.	

49

Table of Contents

		
•	Net premiums written in our North America Personal P&C Insurance segment increased $183 million and $320 million for the three and nine months ended September 30, 2017, respectively, reflecting growth across most lines and a non-recurring unearned premium reserves (UPR) transfer in 2016 which decreased net premiums written in the prior year ( $128 million ). Net premiums written also increased due to the non-renewal of a quota share treaty in 2017 covering the acquired Fireman's Fund homeowners and automobile businesses ( $45 million ) as well as strong renewal in our complementary products lines, particularly in automobile. In addition, the increase in net premiums written for the nine months ended September 30, 2017 reflected the favorable impact of the 14-day stub period ( $100 million ), offset by the purchase of additional reinsurance ( $126 million ).	

•	Net premiums written in our North America Agricultural Insurance segment increased $77 million and $102 million for the three and nine months ended September 30, 2017 , respectively, primarily due to increased MPCI production related to the current crop year.	

•	Net premiums written in our Overseas General Insurance segment increased $23 million , or $22 million on a constant-dollar basis, for the three months ended September 30, 2017 , as growth in personal lines business, primarily from new automobile business written in Latin America, and property and casualty (P&C) lines, primarily in Asia and Europe, were offset by merger-related underwriting actions ( $30 million ) and reinstatement premiums related to catastrophe events in the quarter ($9 million). Net premiums written increased $157 million , or $218 million on a constant-dollar basis, for the nine months ended September 30, 2017 , primarily reflecting the 14-day stub period ( $215 million ). On a comparative constant-dollar basis, which includes the 14-day stub period, net premiums written increased $3 million for the nine months ended September 30, 2017 reflecting merger-related underwriting actions ( $111 million ) and the impact of a merger-related accounting policy adjustment in the fourth quarter of 2016 to align the timing of premium recognition ( $73 million ). Excluding these items, net premiums written increased $187 million on a constant-dollar basis, due to growth in personal lines and P&C lines.	

•	Net premiums written in our Global Reinsurance segment increased $60 million and $18 million for the three and nine months ended September 30, 2017, respectively, primarily due to higher catastrophe reinstatement premiums ( $37 million ) and a new treaty written in the quarter ($14 million). In addition, the prior year included a reduction in treaty premium estimates ( $10 million ) that lowered net premiums written. The increase for the nine months ended September 30, 2017 also reflected the favorable impact of the 14-day stub period ( $20 million ), partially offset by an unfavorable impact from merger-related underwriting actions of $10 million and declining rates and increasing competition.	

•	Net premiums written in our Life Insurance segment increased $ 7 million and $11 million for the three and nine months ended September 30, 2017 , respectively, due to growth in our Combined Insurance supplemental A&H program business and our Asian international life operations. This growth was partially offset by planned declines in our Latin American operations, reflecting merger-related underwriting actions of $9 million and $33 million for the three and nine months ended September 30, 2017, respectively, and in our run-off life reinsurance business.	

50

Table of Contents

Line of Business
The following tables present a breakdown of consolidated net premiums written by line of business for the periods indicated:

																								
 	 	Three Months Ended	 	
 	 	 	 	September 30	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	% Change Q-17 vs.
Q-16		 	C$ (1)   2016  		 	C$ (1)  
%   Change Q-17 vs. Q-16		 	Impact of Merger Actions & UPR transfer (2)		 	C$ (1)  
% Change ex Merger Actions & UPR transfer Q-17 vs. Q-16		
Commercial multiple peril (3)	$	233		 	$	228		 	2.2	 %	 	$	228		 	2.2	 %	 	0.4	 %	 	1.8	 %	
Commercial casualty	992		 	966		 	2.7	 %	 	967		 	2.6	 %	 	(2.3	)%	 	4.9	 %	
Workers' compensation	470		 	471		 	(0.2	)%	 	471		 	(0.2	)%	 	(4.7	)%	 	4.5	 %	
Professional liability	906		 	947		 	(4.3	)%	 	944		 	(4.0	)%	 	0.4	 %	 	(4.4	)%	
Surety	158		 	158		 	—		 	157		 	0.6	 %	 	—		 	0.6	 %	
Property and other short-tail lines	888		 	905		 	(1.9	)%	 	905		 	(1.9	)%	 	(1.5	)%	 	(0.4	)%	
International other casualty	237		 	239		 	(0.8	)%	 	240		 	(1.3	)%	 	—		 	(1.3	)%	
Total Commercial P&C	3,884		 	3,914		 	(0.8	)%	 	3,912		 	(0.7	)%	 	(1.3	)%	 	0.6	 %	
 	 	 	 	 	 	 	 	 	 	 	 	 			
Agriculture	926		 	849		 	9.0	 %	 	849		 	9.0	 %	 	—		 	9.0	 %	
 	 	 	 	 	 	 	 	 	 	 	 	 			
Personal automobile - North America	204		 	188		 	8.5	 %	 	188		 	8.5	 %	 	—		 	8.5	 %	
Personal automobile - International	195		 	154		 	26.6	 %	 	153		 	27.5	 %	 	(3.2	)%	 	30.7	 %	
Personal homeowners	877		 	712		 	23.2	 %	 	712		 	23.2	 %	 	18.8	 %	 	4.4	 %	
Personal other	355		 	367		 	(3.3	)%	 	370		 	(4.1	)%	 	(4.6	)%	 	0.5	 %	
Total Personal lines	1,631		 	1,421		 	14.8	 %	 	1,423		 	14.6	 %	 	8.0	 %	 	6.6	 %	
Total Property and Casualty lines	6,441		 	6,184		 	4.2	 %	 	6,184		 	4.2	 %	 	1.0	 %	 	3.2	 %	
 	 	 	 	 	 	 	 	 	 	 	 	 			
Global A&H lines (4)	1,014		 	990		 	2.4	 %	 	990		 	2.4	 %	 	(1.3	)%	 	3.7	 %	
Reinsurance lines	191		 	131		 	47.1	 %	 	129		 	47.9	 %	 	—		 	47.9	 %	
Life	256		 	268		 	(4.5	)%	 	268		 	(4.5	)%	 	(3.4	)%	 	(1.1	)%	
Total consolidated	$	7,902		 	$	7,573		 	4.3	 %	 	$	7,571		 	4.4	 %	 	0.5	 %	 	3.9	 %	
		
(1)  	On a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period.	
		
(2)  	Reflects the impact to growth of merger-related underwriting actions and a one-time unearned premium reserve (UPR) transfer that reduced net premiums written in the prior year.	
		
(3)  	Commercial multiple peril represents retail package business (property and general liability)	
		
(4)  	For purposes of this schedule only, A&H results from our Combined North America and International businesses, normally included in the Life Insurance and Overseas General Insurance segments, respectively, as well as the A&H results of our North America Commercial P&C segment, are included in Global A&H lines above.	

51

Table of Contents

	
																								
 	 	Nine Months Ended	 	
 	 	 	 	September 30	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	% Change YTD-17 
vs.
YTD-16		 	C$ (1)   2016   including stub period		 	C$ (1)  
%   Change YTD-17 vs. YTD-16 including stub period		 	Impact of Merger Actions, UPR transfer, and accounting policy alignment (2)		 	C$   (1)  
% Change ex Merger Actions, UPR transfer, and accounting policy alignment YTD-17 vs. YTD 16		
Commercial multiple peril (3)	$	661		 	$	596		 	10.9	 %	 	$	676		 	(2.2	)%	 	(0.6	)%	 	(1.6	)%	
Commercial casualty	2,680		 	2,502		 	7.1	 %	 	2,620		 	2.3	 %	 	(3.0	)%	 	5.3	 %	
Workers' compensation	1,536		 	1,467		 	4.7	 %	 	1,605		 	(4.3	)%	 	(3.9	)%	 	(0.4	)%	
Professional liability	2,600		 	2,552		 	1.9	 %	 	2,674		 	(2.8	)%	 	(1.3	)%	 	(1.5	)%	
Surety	461		 	441		 	4.5	 %	 	448		 	2.9	 %	 	(0.7	)%	 	3.6	 %	
Property and other short-tail lines	2,974		 	2,935		 	1.3	 %	 	3,062		 	(2.9	)%	 	(3.3	)%	 	0.4	 %	
International other casualty	801		 	771		 	3.9	 %	 	804		 	(0.4	)%	 	(2.4	)%	 	2.0	 %	
Total Commercial P&C	11,713		 	11,264		 	4.0	 %	 	11,889		 	(1.5	)%	 	(2.5	)%	 	1.0	 %	
 	 	 	 	 	 	 	 	 	 	 	 	 			
Agriculture	1,390		 	1,288		 	7.9	 %	 	1,288		 	7.9	 %	 	—		 	7.9	 %	
 	 	 	 	 	 	 	 	 	 	 	 	 			
Personal automobile - North America	578		 	520		 	11.2	 %	 	534		 	8.2	 %	 	—		 	8.2	 %	
Personal automobile - International	569		 	499		 	14.0	 %	 	490		 	16.1	 %	 	(1.0	)%	 	17.1	 %	
Personal homeowners	2,499		 	2,281		 	9.6	 %	 	2,348		 	6.4	 %	 	0.4	 %	 	6.0	 %	
Personal other	1,080		 	1,048		 	3.1	 %	 	1,082		 	(0.2	)%	 	(6.7	)%	 	6.5	 %	
Total Personal lines	4,726		 	4,348		 	8.7	 %	 	4,454		 	6.1	 %	 	(1.5	)%	 	7.6	 %	
Total Property and Casualty lines	17,829		 	16,900		 	5.5	 %	 	17,631		 	1.1	 %	 	(2.1	)%	 	3.2	 %	
 	 	 	 	 	 	 	 	 	 	 	 	 			
Global A&H lines (4)	3,033		 	2,955		 	2.6	 %	 	2,995		 	1.3	 %	 	(1.1	)%	 	2.4	 %	
Reinsurance lines	580		 	562		 	3.3	 %	 	574		 	0.9	 %	 	(1.7	)%	 	2.6	 %	
Life	751		 	790		 	(4.9	)%	 	796		 	(5.7	)%	 	(4.2	)%	 	(1.5	)%	
Total consolidated	$	22,193		 	$	21,207		 	4.7	 %	 	$	21,996		 	0.9	 %	 	(2.0	)%	 	2.9	 %	
		
(1)  	On a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period.	
		
(2)  	Reflects the impact to growth of merger-related underwriting actions, a one-time unearned premium reserve (UPR) transfer that reduced net premiums written in the prior year, and accounting policy alignment, including the 14-day stub period.	
		
(3)  	Commercial multiple peril represents retail package business (property and general liability)	
		
(4)  	For purposes of this schedule only, A&H results from our Combined North America and International businesses, normally included in the Life Insurance and Overseas General Insurance segments, respectively, as well as the A&H results of our North America Commercial P&C segment, are included in Global A&H lines above.	

Net Premiums Earned
Net premiums earned for short-duration contracts, typically P&C contracts, generally reflect the portion of net premiums written that were recorded as revenues for the period as the exposure periods expire. Net premiums earned for long-duration contracts, typically traditional life contracts, generally are recognized as earned when due from policyholders. Net premiums earned increased $119 million , or $109 million on a constant-dollar basis, for the three months ended September 30, 2017 due to the same factors driving the increase in net premiums written as described above.

Net premiums earned increased $126 million , or $154 million on a constant-dollar basis, for the nine months ended September 30, 2017 . The prior year excluded approximately $391 million of premiums earned in the 14-day stub period. On a comparative constant-dollar basis, which includes the 14-day stub period, net premiums earned decreased $237 million for the nine months ended September 30, 2017 as growth was more than offset by merger-related underwriting actions.

52

Table of Contents

Combined Ratio
In evaluating our segments excluding Life Insurance, we use the P&C combined ratio, the loss and loss expense ratio, the policy acquisition cost ratio, and the administrative expense ratio. We calculate these ratios by dividing the respective expense amounts by net premiums earned. We do not calculate these ratios for the Life Insurance segment as we do not use these measures to monitor or manage that segment. The P&C combined ratio is determined by adding the loss and loss expense ratio, the policy acquisition cost ratio, and the administrative expense ratio. A P&C combined ratio under 100 percent indicates underwriting income, and a combined ratio exceeding 100 percent indicates underwriting loss.

The following table presents the components of the combined ratio: 

												
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017		 	2016		 	2017		 	2016		
Loss and loss expense ratio	83.4	%	 	57.0	%	 	67.3	%	 	58.0	%	
Policy acquisition cost ratio	18.6	%	 	19.3	%	 	19.5	%	 	20.3	%	
Administrative expense ratio	8.8	%	 	9.7	%	 	9.2	%	 	10.7	%	
Combined Ratio	110.8	%	 	86.0	%	 	96.0	%	 	89.0	%	

The following table presents pre-tax catastrophe losses and pre-tax favorable prior period development net of related reinstatement premiums:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S dollars)	2017		 	2016		 	2017		 	2016		
Catastrophe losses, pre-tax (1)	$	1,915		 	$	144		 	$	2,321		 	$	798		
Favorable prior period development net of related reinstatement premiums, pre-tax	$	270		 	$	349		 	$	671		 	$	897		

(1)  	Excludes reinstatement premiums of $22 million for the three and nine months ended September 30, 2017, respectively, and reinstatement premiums of nil and $6 million for the three and nine months ended September 30, 2016, respectively.	

53

Table of Contents

The following table presents the break out of catastrophe losses for the three months ended September 30, 2017 , by segment, both gross and net of reinsurance as well as reinstatement premiums (RIPs) collected (expensed).

																																
 	Catastrophe Loss Charge by Event	 	
 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	North America Agricultural Insurance		 	Overseas General Insurance		 	Global
Reinsurance		 	Total excluding RIPs		 	RIPs collected (expensed)		 	Total including RIPs		
Three Months Ended																								
September 30, 2017																								
(in millions of U.S. dollars)																								
Gross losses	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Hurricane Harvey	$	547		 	$	250		 	$	1		 	$	140		 	$	50		 	$	988		 	 	 	 	
Hurricane Irma	618		 	214		 	2		 	120		 	325		 	1,279		 	 	 	 	
Hurricane Maria	—		 	—		 	—		 	500		 	59		 	559		 	 	 	 	
Mexico Earthquakes	—		 	—		 	—		 	40		 	—		 	40		 	 	 	 	
Other	38		 	44		 	2		 	24		 	10		 	118		 	 	 	 	
Total	$	1,203		 	$	508		 	$	5		 	$	824		 	$	444		 	$	2,984		 	 	 	 	
Net losses	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Hurricane Harvey	$	366		 	$	200		 	$	1		 	$	40		 	$	48		 	$	655		 	$	5		 	$	650		
Hurricane Irma	464		 	206		 	2		 	90		 	159		 	921		 	30		 	891		
Hurricane Maria	—		 	—		 	—		 	152		 	55		 	207		 	(13	)	 	220		
Mexico Earthquakes	—		 	—		 	—		 	25		 	—		 	25		 	—		 	25		
Other	38		 	42		 	2		 	19		 	6		 	107		 	—		 	107		
Total	$	868		 	$	448		 	$	5		 	$	326		 	$	268		 	$	1,915		 			 			
Reinstatement premium collected (expensed)	$	(3	)	 	$	(3	)	 	$	—		 	$	(9	)	 	$	37		 			 	$	22		 	 	
Total before income tax	$	871		 	$	451		 	$	5		 	$	335		 	$	231		 			 	 	 	$	1,893		
Income tax benefit	 	 	 	 	 	 	 	 	 	 	 	 	 	 	368		
Total after income tax	 	 	 	 	 	 	 	 	 	 	 	 	 	 	$	1,525		

The above table represents initial catastrophe losses estimated based on modeled information, underwriter analysis, preliminary assessments, and an analysis of exposed limits within each region. These estimates, as well as the allocation of these losses by segment, may change as additional information emerges. At this time there is the potential that approximately $20 million of net catastrophe losses associated with Hurricane Maria may be re-allocated from Overseas General Insurance segment to North America Commercial P&C Insurance segment as further claims detail are reported. There would be no impact to consolidated net losses from such a re-allocation. Catastrophe losses through September 30, 2017 also included Cyclone Debbie in Australia, flooding in Latin America, and severe weather-related events in the U.S. Catastrophe losses through September 30, 2016 included severe weather-related events in the U.S. and Europe, a wildfire in Canada, and an earthquake in Ecuador.

During October 2017, wildfires erupted across several California counties in the U.S. At this time, there are uncertainties surrounding the numbers of claims and scope of damage for this named catastrophe. Therefore, we are unable at this time to estimate the potential losses from California wildfires.

54

Table of Contents

The following tables present the calculation of combined ratio, as reported, to combined ratio, adjusted for catastrophe losses (CATs) and PPD:

																														
 	 	 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	North America Agricultural Insurance		 	Overseas General Insurance		 	Global
Reinsurance		 	Corporate		 	P&C		
For the Three Months Ended																							
September 30, 2017																							
(in millions of U.S. dollars)																							
Numerator	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	A	 	$	2,580		 	$	1,062		 	$	764		 	$	1,281		 	$	295		 	$	89		 	$	6,071		
Catastrophe losses	 	 	(868	)	 	(448	)	 	(5	)	 	(326	)	 	(268	)	 	—		 	(1,915	)	
PPD and related adjustments - favorable (unfavorable)	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
PPD, net of related adjustments	 	 	236		 	(32	)	 	4		 	108		 	41		 	(87	)	 	270		
Reinstatement premiums (collected) expensed on PPD	 	 	39		 	—		 	—		 	—		 	3		 	—		 	42		
Expense adjustments	 	 	6		 	—		 	—		 	—		 	—		 	—		 	6		
PPD - gross of related adjustments	 	 	281		 	(32	)	 	4		 	108		 	44		 	(87	)	 	318		
Loss and loss expense ex CATs and PPD	B	 	$	1,993		 	$	582		 	$	763		 	$	1,063		 	$	71		 	$	2		 	$	4,474		
Policy acquisition costs and administrative expenses	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Policy acquisition costs and administrative expenses	C	 	$	725		 	$	287		 	$	48		 	$	815		 	$	54		 	$	64		 	$	1,993		
Expense adjustments	 	 	(6	)		—			—			—			—			—			(6	)	
Policy acquisition costs and administrative expenses, adjusted	D	 	$	719		 	$	287		 	$	48		 	$	815		 	$	54		 	$	64		 	$	1,987		
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Denominator	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Net premiums earned	E	 	$	3,016		 	$	1,117		 	$	898		 	$	2,064		 	$	185		 	 	 	$	7,280		
Reinstatement premiums (collected) expensed on catastrophe losses
	 	 	3		 	3		 	—		 	9		 	(37	)	 	 	 	(22	)	
Net earned premium adjustments on PPD	 	 	39		 	—		 	—		 	—		 	3		 	 	 	42		
Net premiums earned excluding adjustments	F	 	$	3,058		 	$	1,120		 	$	898		 	$	2,073		 	$	151		 	 	 	$	7,300		
Combined ratio	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expense ratio	A/E	 	85.5	%	 	95.1	%	 	85.1	%	 	62.1	%	 	158.2	%	 	 	 	83.4	%	
Policy acquisition costs and administrative expense ratio	C/E	 	24.1	%	 	25.7	%	 	5.3	%	 	39.5	%	 	29.2	%	 	 	 	27.4	%	
Combined ratio	 	 	109.6	%	 	120.8	%	 	90.4	%	 	101.6	%	 	187.4	%	 	 	 	110.8	%	
Combined ratio, adjusted for CATs and PPD	 	 	 	 	 	 	 	 	 	 	 	 	 	 			
Loss and loss expense ratio, adjusted	B/F	 	65.2	%	 	51.9	%	 	84.9	%	 	51.3	%	 	46.5	%	 	 	 	61.3	%	
Policy acquisition costs and administrative expense ratio, adjusted	D/F	 	23.5	%	 	25.6	%	 	5.4	%	 	39.3	%	 	35.7	%	 	 	 	27.2	%	
Combined ratio, adjusted for CATs and PPD	 	 	88.7	%	 	77.5	%	 	90.3	%	 	90.6	%	 	82.2	%	 	 	 	88.5	%	
Note: The ratios above are calculated using whole U.S. dollars. Accordingly, calculations using rounded amounts may differ. Letters A, B, C, D, E, and F included in the table are references for calculating the ratios above.	

55

Table of Contents

	
																														
 	 	 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	North America Agricultural Insurance		 	Overseas General Insurance		 	Global
Reinsurance		 	Corporate		 	P&C		
For the Nine Months Ended																							
September 30, 2017																							
(in millions of U.S. dollars)																							
Numerator	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	A	 	$	6,376		 	$	2,378		 	$	983		 	$	3,316		 	$	435		 	$	145		 	$	13,633		
Catastrophe losses	 	 	(1,053	)	 	(593	)	 	(18	)	 	(386	)	 	(271	)	 	—		 	(2,321	)	
PPD and related adjustments - favorable (unfavorable)	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
PPD, net of related adjustments	 	 	546		 	(66	)	 	83		 	184		 	64		 	(140	)	 	671		
Reinstatement premiums (collected) expensed on PPD	 	 	42		 	—		 	61		 	—		 	(4	)	 	—		 	99		
Expense adjustments	 	 	6		 	—		 	(4	)	 	—		 	—		 	—		 	2		
PPD reinstatement premiums	 	 	9		 	—		 	—		 	—		 	—		 	—		 	9		
PPD - gross of related adjustments	 	 	603		 	(66	)	 	140		 	184		 	60		 	(140	)	 	781		
Loss and loss expense ex CATs and PPD	B	 	$	5,926		 	$	1,719		 	$	1,105		 	$	3,114		 	$	224		 	$	5		 	$	12,093		
Policy acquisition costs and administrative expenses	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Policy acquisition costs and administrative expenses	C	 	$	2,148		 	$	865		 	$	71		 	$	2,387		 	$	170		 	$	187		 	$	5,828		
Expense adjustment	 	 	(6	)	 	—		 	4		 	—		 	—		 	—		 	(2	)	
Policy acquisition costs and administrative expenses, adjusted	D	 	$	2,142		 	$	865		 	$	75		 	$	2,387		 	$	170		 	$	187		 	$	5,826		
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Denominator	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Net premiums earned	E	 	$	9,156		 	$	3,296		 	$	1,256		 	$	6,018		 	$	542		 	 	 	$	20,268		
Reinstatement premiums (collected) expensed on catastrophe losses
	 	 	3		 	3		 	—		 	9		 	(37	)	 	 	 	(22	)	
Net earned premium adjustments on PPD	 	 	42		 	—		 	61		 	—		 	(4	)	 	 	 	99		
PPD reinstatement premiums	 	 	9		 	—		 	—		 	—		 	—		 	 	 	9		
Net premiums earned excluding adjustments	F	 	$	9,210		 	$	3,299		 	$	1,317		 	$	6,027		 	$	501		 	 	 	$	20,354		
Combined ratio	 	 	 	 	 	 	 	 	 	 	 	 	 	 			
Losses and loss expense ratio	A/E	 	69.6	%	 	72.2	%	 	78.3	%	 	55.1	%	 	80.1	%	 	 	 	67.3	%	
Policy acquisition costs and administrative expense ratio	C/E	 	23.5	%	 	26.2	%	 	5.6	%	 	39.7	%	 	31.4	%	 	 	 	28.7	%	
Combined ratio	 	 	93.1	%	 	98.4	%	 	83.9	%	 	94.8	%	 	111.5	%	 	 	 	96.0	%	
Combined ratio, adjusted for CATs and PPD	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Loss and loss expense ratio, adjusted	B/F	 	64.3	%	 	52.1	%	 	83.9	%	 	51.7	%	 	44.6	%	 	 	 	59.4	%	
Policy acquisition costs and administrative expense ratio, adjusted	D/F	 	23.3	%	 	26.2	%	 	5.7	%	 	39.6	%	 	34.0	%	 	 	 	28.6	%	
Combined ratio, adjusted for CATs and PPD	 	 	87.6	%	 	78.3	%	 	89.6	%	 	91.3	%	 	78.6	%	 	 	 	88.0	%	
Note: The ratios above are calculated using whole U.S. dollars. Accordingly, calculations using rounded amounts may differ. Letters A, B, C, D, E, and F included in the table are references for calculating the ratios above.

Prior period development arises from changes to loss estimates recognized in the current year that relate to loss events that occurred in previous calendar years and excludes the effect of losses from the development of earned premium from previous

56

Table of Contents

accident years. The favorable prior period development was $270 million for the three months ended September 30, 2017 compared to $349 million in the prior year, a decline of $79 million, pre-tax. This is primarily due to a higher legacy environmental liability charge in 2017 of $25 million and a release of an individual legacy liability case reserve of $25 million in 2016. In addition, the nine months ended September 30, 2017 included a charge of $41 million, reflecting the change in the discount rate in the U.K. (Ogden rate).

The loss ratio numerator includes losses and loss expenses adjusted to exclude catastrophe losses and PPD. The loss ratio denominator includes net premiums earned adjusted to exclude the amount of reinstatement premiums (expensed) collected. In periods where there are adjustments on loss sensitive policies, these adjustments are excluded from PPD and net premiums earned when calculating this ratio. We believe that excluding the impact of catastrophe losses and PPD provides a better evaluation of our underwriting performance and enhances the understanding of the trends in our property & casualty business that may be obscured by these items.

The following table presents the impact of catastrophe losses and prior period reserve development net of related reinstatement premiums on our consolidated loss and loss expense ratio.

												
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017		 	2016		 	2017		 	2016		
Loss and loss expense ratio	83.4	 %	 	57.0	 %	 	67.3	 %	 	58.0	 %	
Catastrophe losses	(26.1	)%	 	(2.0	)%	 	(11.4	)%	 	(3.9	)%	
Prior period development net of related reinstatement premiums	4.0	 %	 	5.0	 %	 	3.5	 %	 	4.6	 %	
Loss and loss expense ratio, adjusted	61.3	 %	 	60.0	 %	 	59.4	 %	 	58.7	 %	

The adjusted loss and loss expense ratio increased 1.3 percentage points and 0.7 percentage points for the three and nine months ended September 30, 2017 , respectively, primarily due to the following:
		
•	Higher non-catastrophe large losses in property lines and mix of business in our Major Accounts division in our North America Commercial P&C Insurance segment, driven by growth in casualty lines which have a higher loss ratio and declines in property lines which have a lower loss ratio (0.6 percentage points and 0.4 percentage points, respectively);	
		
•	Higher non-catastrophe large losses in our North America Personal P&C Insurance segment (0.4 percentage points and 0.3 percentage points, respectively);	
		
•	An updated allocation that more appropriately classified certain claims-related expenses as loss adjustment expenses (previously reported as administrative expenses). This updated allocation increased loss adjustment expenses (0.4 percentage points and 0.3 percentage points, respectively), with an offsetting decrease to administrative expenses;	
		
•	Partially offset by integration-related claims handling expense savings realized of $28 million ( 0.4 percentage points) and $82 million ( 0.4 percentage points) for the three and nine months ended September 30, 2017 , respectively.	

Policy acquisition costs consist of commissions, premium taxes, and certain underwriting costs directly related to the successful acquisition of a new or renewal insurance contract. Our policy acquisition cost ratio decreased 0.7 percentage points and 0.8 percentage points, respectively, for the three and nine months ended September 30, 2017 , compared to the prior year periods, which included a net unfavorable impact of purchase accounting adjustments related to the Chubb Corp acquisition (0.5 percentage points and 0.8 percentage points). The decrease for the three and nine months ended September 30, 2017 was also due to integration-related expense savings realized ( 0.1 percentage points and 0.2 percentage points, respectively).

Our administrative expense ratio decreased 0.9 percentage point and 1.5 percentage points for the three and nine months ended September 30, 2017 , primarily due to integration-related expense savings realized as a result of the Chubb Corp acquisition of $61 million ( 0.8 percentage points) and $211 million ( 1.0 percentage point), respectively, lower employee benefit-related expenses (0.7 percentage points and 0.6 percentage points, respectively), and the updated loss expenses and administrative expenses allocation as noted above (0.4 percentage points and 0.3 percentage points, respectively), partially offset by the impact of merit-based salary increases, inflation, and increased spending to support growth.

Policy benefits
Policy benefits represent losses on contracts classified as long-duration and generally include accident and supplemental health products, term and whole life products, endowment products, and annuities. Policy benefits also include gains and losses from changes in liabilities associated with our separate account assets that do not qualify for separate account reporting under GAAP. Certain of our long duration contracts are supported by assets that do not qualify for separate account reporting under

57

Table of Contents

GAAP. These assets are classified as trading securities and reported in Other investments and the offsetting liabilities are reported in Future policy benefits in the Consolidated balance sheet. Fair value changes in separate account assets that do not qualify for separate account reporting under GAAP are reported in Other (income) expense and the offsetting movements in the liabilities are included in Policy benefits in the Consolidated statements of operations.

For the three and nine months ended September 30, 2017 , Policy benefits were $169 million and $500 million , respectively, which included losses of $24 million and $70 million related to separate account liabilities, respectively. For the three and nine months ended September 30, 2016, policy benefits were $155 million and $427 million , respectively, which included losses of $22 million related to separate account liabilities for both periods. The increases in Policy benefits for the three and nine months ended September 30, 2017 included the adverse impact of updating our long-term benefit ratio in our variable annuity business in the fourth quarter of 2016 ($15 million and $48 million).

Refer to the Corporate results section below for information on Net investment income, Interest expense, and Income tax expense.

Integration-Related Savings
The following tables present consolidated integration-related savings realized by segment and income statement line item:

																																
 	Three Months Ended September 30	 	
 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	Overseas General Insurance		 	Global Reinsurance		 	Corporate		 	Total P&C		 	Life Insurance		 	Consolidated		
2017																								
(in millions of U.S. dollars)																								
Losses and loss expenses	$	24		 	$	8		 	$	13		 	$	—		 	$	—		 	$	45		 	$	—		 	$	45		
Policy acquisition costs	11		 	5		 	8		 	—		 	—		 	24		 	—		 	24		
Administrative expenses	44		 	16		 	52		 	—		 	18		 	130		 	1		 	131		
Net investment income	—		 	—		 	—		 	—		 	1		 	1		 	—		 	1		
Total	$	79		 	$	29		 	$	73		 	$	—		 	$	19		 	$	200		 	$	1		 	$	201		
2016	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	$	10		 	$	4		 	$	3		 	$	—		 	$	—		 	$	17		 	$	—		 	$	17		
Policy acquisition costs	7		 	3		 	4		 	—		 	—		 	14		 	—		 	14		
Administrative expenses	27		 	10		 	23		 	—		 	10		 	70		 	—		 	70		
Net investment income	—		 	—		 	—		 	—		 	1		 	1		 	—		 	1		
Total	$	44		 	$	17		 	$	30		 	$	—		 	$	11		 	$	102		 	$	—		 	$	102		
Incremental Change	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	$	14		 	$	4		 	$	10		 	$	—		 	$	—		 	$	28		 	$	—		 	$	28		
Policy acquisition costs	4		 	2		 	4		 	—		 	—		 	10		 	—		 	10		
Administrative expenses	17		 	6		 	29		 	—		 	8		 	60		 	1		 	61		
Net investment income	—		 	—		 	—		 	—		 	—		 	—		 	—		 	—		
Total	$	35		 	$	12		 	$	43		 	$	—		 	$	8		 	$	98		 	$	1		 	$	99		

58

Table of Contents

	
																																
 	Nine Months Ended September 30	 	
 	North America Commercial P&C Insurance		 	North America Personal P&C Insurance		 	Overseas General Insurance		 	Global Reinsurance		 	Corporate		 	Total P&C		 	Life Insurance		 	Consolidated		
2017																								
(in millions of U.S. dollars)																								
Losses and loss expenses	$	61		 	$	23		 	$	33		 	$	—		 	$	—		 	$	117		 	$	—		 	$	117		
Policy acquisition costs	28		 	9		 	18		 	—		 	—		 	55		 	—		 	55		
Administrative expenses	122		 	48		 	132		 	1		 	50		 	353		 	2		 	355		
Net investment income	1		 	1		 	—		 	—		 	1		 	3		 	—		 	3		
Total	$	212		 	$	81		 	$	183		 	$	1		 	$	51		 	$	528		 	$	2		 	$	530		
2016	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	$	19		 	$	10		 	$	6		 	$	—		 	$	—		 	$	35		 	$	—		 	$	35		
Policy acquisition costs	11		 	3		 	6		 	—		 	—		 	20		 	—		 	20		
Administrative expenses	59		 	25		 	40		 	—		 	20		 	144		 	—		 	144		
Net investment income	1		 	1		 	—		 	—		 	1		 	3		 	—		 	3		
Total	$	90		 	$	39		 	$	52		 	$	—		 	$	21		 	$	202		 	$	—		 	$	202		
Incremental Change	 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Losses and loss expenses	$	42		 	$	13		 	$	27		 	$	—		 	$	—		 	$	82		 	$	—		 	$	82		
Policy acquisition costs	17		 	6		 	12		 	—		 	—		 	35		 	—		 	35		
Administrative expenses	63		 	23		 	92		 	1		 	30		 	209		 	2		 	211		
Net investment income	—		 	—		 	—		 	—		 	—		 	—		 	—		 	—		
Total	$	122		 	$	42		 	$	131		 	$	1		 	$	30		 	$	326		 	$	2		 	$	328		

Annualized and realized integration-related savings are expected to be $875 million and $845 million, respectively, by the end of 2018. The difference between annualized savings and realized savings reflects the additional amount that will be realized in future periods. The timing of realizing savings is dependent on the period in which the action is executed.

59

Table of Contents

Prior Period Development
The following table summarizes (favorable) and adverse prior period development (PPD) by segment. Long-tail lines include lines such as workers' compensation, general liability, and professional liability; while short-tail lines include lines such as most property lines, energy, personal accident, and agriculture. During the third quarter of 2017, we determined that the classification of loss development for certain businesses, previously grouped within the short-tail column in the table below, would be more appropriately grouped within the long-tail column to better align with the classification of these businesses within our loss development tables in the 2016 Form 10-K. We also determined that the loss development for certain other businesses should be reclassified from long-tail to short-tail. We updated our 2016 and year-to-date 2017 amounts below to conform to the current period presentation. As a result, we have reclassified net favorable development into long-tail from short-tail as follows: $8 million for year-to-date 2017, $96 million for the third quarter of 2016, and $90 million for year-to-date 2016. These changes to the previously disclosed amount have no impact to our financial condition and results of operations.

	
																								
 	Three Months Ended September 30	 	 	Nine Months Ended September 30	 	
(in millions of U.S. dollars)	Long-tail    		 	Short-tail		 	Total		 	Long-tail    		 	Short-tail		 	Total		
2017	 	 	 	 	 	 	 	 	 	 	 	
North America Commercial P&C Insurance	$	(242	)	 	$	6		 	$	(236	)	 	$	(431	)	 	$	(115	)	 	$	(546	)	
North America Personal P&C Insurance	—		 	32		 	32		 	—		 	66		 	66		
North America Agricultural Insurance	—		 	(4	)	 	(4	)	 	—		 	(83	)	 	(83	)	
Overseas General Insurance	(109	)	 	1		 	(108	)	 	(78	)	 	(106	)	 	(184	)	
Global Reinsurance	(41	)	 	—		 	(41	)	 	(67	)	 	3		 	(64	)	
Corporate	87		 	—		 	87		 	140		 	—		 	140		
Total	$	(305	)	 	$	35		 	$	(270	)	 	$	(436	)	 	$	(235	)	 	$	(671	)	
2016	 	 	 	 	 	 	 	 	 	 	 	
North America Commercial P&C Insurance	$	(167	)	 	$	(20	)	 	$	(187	)	 	$	(473	)	 	$	(60	)	 	$	(533	)	
North America Personal P&C Insurance	—		 	38		 	38		 	—		 	20		 	20		
North America Agricultural Insurance	—		 	(11	)	 	(11	)	 	—		 	(52	)	 	(52	)	
Overseas General Insurance	(234	)	 	11		 	(223	)	 	(235	)	 	(103	)	 	(338	)	
Global Reinsurance	(28	)	 	—		 	(28	)	 	(78	)	 	—		 	(78	)	
Corporate	62		 	—		 	62		 	84		 	—		 	84		
Total	$	(367	)	 	$	18		 	$	(349	)	 	$	(702	)	 	$	(195	)	 	$	(897	)	

For a discussion of significant prior period movements by segment, refer to Note 5 to the Consolidated Financial Statements.

60

Table of Contents

	
	
Segment Operating Results – Three and Nine Months Ended September 30, 2017 and 2016	

We operate through six business segments: North America Commercial P&C Insurance, North America Personal P&C Insurance, North America Agricultural Insurance, Overseas General Insurance, Global Reinsurance, and Life Insurance. For more information on our segments refer to “Segment Information” under Item 1 in our 2016 Form 10-K.

Corporate results primarily include the results of our non-insurance companies, income and expenses not attributable to reportable segments and loss and loss expenses of asbestos and environmental (A&E) liabilities and certain other run-off exposures.

North America Commercial P&C Insurance

The North America Commercial P&C Insurance segment comprises operations that provide property and casualty (P&C) insurance and services to large, middle market, and small commercial businesses in the U.S., Canada, and Bermuda. This segment includes our North America Major Accounts and Specialty Insurance division (principally large corporate accounts and wholesale accounts), and the North America Commercial Insurance division (principally middle market and small commercial accounts).

																										
 	Three Months Ended	 	 	 	 	 	Nine Months Ended	 	 	 	 	
 	September 30	 	 	% Change	 	 	September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16	 	 	2017		 	2016		 	YTD-17 vs.
YTD-16	 	
Net premiums written	$	3,089		 	$	3,110		 	(0.6	)%	 	$	9,035		 	$	8,657		 	4.4	%	
Net premiums earned	3,016		 	3,086		 	(2.3	)%	 	9,156		 	9,130		 	0.3	%	
Losses and loss expenses	2,580		 	1,863		 	38.5	%	 	6,376		 	5,581		 	14.2	%	
Policy acquisition costs	469		 	522		 	(10.2	)%	 	1,420		 	1,549		 	(8.3	)%	
Administrative expenses	256		 	275		 	(6.9	)%	 	728		 	840		 	(13.3	)%	
Underwriting income (loss)	(289	)	 	426		 	NM	 	 	632		 	1,160		 	(45.5	)%	
Net investment income	497		 	477		 	4.2	%	 	1,465		 	1,371		 	6.9	%	
Other (income) expense	(4	)	 	3		 	NM	 	 	(4	)	 	(6	)	 	(33.3	)%	
Segment income	$	212		 	$	900		 	(76.4	)%	 	$	2,101		 	$	2,537		 	(17.2	)%	
Loss and loss expense ratio	85.5	%	 	60.4	%	 	25.1		pts		 	69.6	%	 	61.1	%	 	8.5		pts		
Policy acquisition cost ratio	15.5	%	 	16.9	%	 	(1.4	)	pts		 	15.5	%	 	17.0	%	 	(1.5	)	pts		
Administrative expense ratio	8.6	%	 	8.9	%	 	(0.3	)	pts		 	8.0	%	 	9.2	%	 	(1.2	)	pts		
Combined ratio	109.6	%	 	86.2	%	 	23.4		pts		 	93.1	%	 	87.3	%	 	5.8		pts		
NM – not meaningful

Premiums
Net premiums written decreased $21 million for the three months ended September 30, 2017 primarily due to merger-related underwriting actions ( $57 million ). Excluding these actions, net premiums written increased $36 million , primarily due to growth in our Major Accounts Risk Management and Wholesale businesses and in our Commercial Insurance workers' compensation and casualty lines, which was partially offset by declines in our property and select components of our financial lines businesses due to competitive market conditions.

Net premiums written increased $378 million for the nine months ended September 30, 2017 due to the timing of the Chubb Corp acquisition in the prior year which excluded approximately $519 million of production generated prior to the acquisition close on January 14, 2016 (14-day stub period). On a comparative basis, which includes the 14-day stub period, net premiums written decreased $141 million driven by merger-related underwriting actions ( $225 million ). Excluding these items, net premiums written increased $84 million , or 0.9 percent, primarily due to the same factors driving the increase in the three months ended September 30, 2017 as described above.

61

Table of Contents

Net premiums earned decreased $70 million and increased $26 million for the three and nine months ended September 30, 2017 , respectively, due to the factors described above. For the nine months ended September 30, 2017 , this unfavorable impact was partially offset by growth as well as the favorable impact of the 14-day stub period as described above.

Combined Ratio
The following table presents pre-tax catastrophe losses and pre-tax favorable prior period development net of related reinstatement premiums:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		 	2017		 	2016		
Catastrophe losses, pre-tax	$	868		 	$	90		 	$	1,053		 	$	331		
Favorable prior period development net of related reinstatement premiums, pre-tax	$	236		 	$	187		 	$	546		 	$	533		

Catastrophe losses through September 30, 2017 and 2016 were primarily from the following events:
		
•	2017: Hurricane Irma, Hurricane Harvey, and severe weather-related events in the U.S.	
		
•	2016: Severe weather-related events in the U.S. and a wildfire in Canada.	
The following table presents the impact of catastrophe losses and prior period reserve development net of related reinstatement premiums on our loss and loss expense ratio:

												
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017		 	2016		 	2017		 	2016		
Loss and loss expense ratio	85.5	 %	 	60.4	 %	 	69.6	 %	 	61.1	 %	
Catastrophe losses	(28.8	)%	 	(2.8	)%	 	(11.5	)%	 	(3.6	)%	
Prior period development net of related reinstatement premiums	8.5	 %	 	6.2	 %	 	6.2	 %	 	6.0	 %	
Loss and loss expense ratio, adjusted	65.2	 %	 	63.8	 %	 	64.3	 %	 	63.5	 %	

The adjusted loss and loss expense ratio increased 1.4 percentage points and 0.8 percentage points for the three and nine months ended September 30, 2017 , respectively, primarily due to higher non-catastrophe large losses in property lines and mix of business in our Major Accounts division, driven by growth in casualty lines which have a higher loss ratio and declines in property lines which have a lower loss ratio, as well as an updated allocation that more appropriately classified certain claims-related expenses as loss adjustment expenses (previously reported as administrative expenses). This updated allocation increased loss adjustment expenses (0.6 percentage points for both the three and nine months ended September 30, 2017 ) with an offsetting decrease to administrative expenses. This increase was partially offset by integration-related expense savings realized of $14 million (0.4 percentage points) and $42 million (0.5 percentage points), respectively.

The policy acquisition cost ratio decreased 1.4 percentage points and 1.5 percentage points for the three and nine months ended September 30, 2017 , respectively, compared to prior year periods which included the net unfavorable impact of initial year purchase accounting adjustments related to the Chubb Corp acquisition (0.9 percentage points and 1.3 percentage points, respectively). Excluding this item, the policy acquisition cost ratio decreased 0.5 percentage points and 0.2 percentage points for the three and nine months ended September 30, 2017, respectively, primarily due to the change in the mix of business and integration-related expense savings realized of $4 million (0.1 percentage points) and $17 million (0.1 percentage points, respectively.

The administrative expense ratio decreased 0.3 percentage points and 1.2 percentage points for the three and nine months ended September 30, 2017 , respectively. These declines reflect integration-related expense savings realized of $17 million (0.5 percentage points) and $63 million (0.7 percentage points) for the three and nine months ended September 30, 2017 , respectively, lower employee benefit-related expenses of $39 million (1.2 percentage points) and $94 million (1.0 percentage point), respectively, and the updated loss expenses and administrative expenses allocation as noted above (0.6 percentage points for both periods), partially offset by the impact of merit-based salary increases, inflation, and increased spending to support growth.

62

Table of Contents

North America Personal P&C Insurance

The North America Personal P&C Insurance segment comprises operations that provide high net worth personal lines products, including homeowners and complementary products such as valuable articles, excess liability, automobile, and recreational marine insurance and services in the U.S. and Canada.

																										
 	Three Months Ended	 	 	 	 	 	Nine Months Ended	 	 	 	 	
 	September 30	 	 	% Change	 	 	September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16	 	 	2017		 	2016		 	YTD-17 vs.
YTD-16	 	
Net premiums written	$	1,194		 	$	1,011		 	18.0	%	 	$	3,433		 	$	3,113		 	10.3	%	
Net premiums earned	1,117		 	1,081		 	3.4	%	 	3,296		 	3,245		 	1.6	%	
Losses and loss expenses	1,062		 	594		 	78.8	%	 	2,378		 	1,916		 	24.1	%	
Policy acquisition costs	226		 	229		 	(1.3	)%	 	673		 	747		 	(9.9	)%	
Administrative expenses	61		 	89		 	(31.5	)%	 	192		 	275		 	(30.2	)%	
Underwriting income (loss)	(232	)	 	169		 	NM	 	 	53		 	307		 	(82.7	)%	
Net investment income	57		 	53		 	7.5	%	 	168		 	155		 	8.4	%	
Other (income) expense	1		 	2		 	(50.0	)%	 	3		 	6		 	(50.0	)%	
Amortization of purchased intangibles	4		 	4		 	—	 	 	12		 	16		 	(25.0	)%	
Segment income (loss)	$	(180	)	 	$	216		 	NM	 	 	$	206		 	$	440		 	(53.2	)%	
Loss and loss expense ratio	95.1	%	 	54.9	%	 	40.2		pts		 	72.2	%	 	59.1	%	 	13.1		pts		
Policy acquisition cost ratio	20.2	%	 	21.2	%	 	(1.0	)	pts		 	20.4	%	 	23.0	%	 	(2.6	)	pts		
Administrative expense ratio	5.5	%	 	8.3	%	 	(2.8	)	pts		 	5.8	%	 	8.4	%	 	(2.6	)	pts		
Combined ratio	120.8	%	 	84.4	%	 	36.4		pts		 	98.4	%	 	90.5	%	 	7.9		pts		
NM – not meaningful
	 	 	 	 	 	 	 	 	 	 	 	 	 	
Premiums
Net premiums written increased $183 million for the three months ended September 30, 2017 primarily reflecting a non-recurring unearned premium reserves (UPR) transfer in 2016 which decreased net premiums written in the prior year ( $128 million ). Net premiums written also increased due to the non-renewal of a quota share treaty in 2017 covering the acquired Fireman's Fund homeowners and automobile businesses ( $45 million ) as well as strong renewal in our complementary products lines, particularly in automobile.

Net premiums written increased $320 million for the nine months ended September 30, 2017 , due to the timing of the Chubb Corp acquisition as well as the items described above. The prior year excluded approximately $100 million of production generated prior to the Chubb Corp acquisition (14-day stub period). On a comparative basis, which includes the 14-day stub period, net premiums written increased $220 million reflecting growth across most lines, partially offset by the purchase of additional reinsurance ( $126 million ) primarily for our homeowners and large limit valuable articles business written in the northeast United States.

Net premiums earned increased $36 million and $51 million for the three and nine months ended September 30, 2017 , respectively, primarily due to the factors described above.

Combined Ratio
The following table presents pre-tax catastrophe losses and pre-tax favorable prior period development:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		 	2017		 	2016		
Catastrophe losses, pre-tax	$	448		 	$	22		 	$	593		 	$	275		
Favorable (unfavorable) prior period development, pre-tax	$	(32	)	 	$	(38	)	 	$	(66	)	 	$	(20	)	

63

Table of Contents

Catastrophe losses through September 30, 2017 and 2016 were primarily from the following events:
		
•	2017: Hurricane Harvey, Hurricane Irma, and severe weather-related events in the U.S.	
		
•	2016: Severe weather-related events in the U.S.	
The following table presents the impact of catastrophe losses and prior period reserve development on our loss and loss expense ratio:

												
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017		 	2016		 	2017		 	2016		
Loss and loss expense ratio	95.1	 %	 	54.9	 %	 	72.2	 %	 	59.1	 %	
Catastrophe losses	(40.3	)%	 	(2.1	)%	 	(18.0	)%	 	(8.4	)%	
Prior period development	(2.9	)%	 	(3.5	)%	 	(2.1	)%	 	(0.7	)%	
Loss and loss expense ratio, adjusted	51.9	 %	 	49.3	 %	 	52.1	 %	 	50.0	 %	

The adjusted loss and loss expense ratio increased 2.6 percentage points and 2.1 percentage points for the three and nine months ended September 30, 2017 , respectively, primarily due to higher non-catastrophe large losses (2.8 percentage points and 2.1 percentage points, respectively), as well as an updated allocation that more appropriately classified certain claims-related expenses as loss adjustment expenses (previously reported as administrative expenses). This updated allocation increased loss adjustment expenses (0.6 percentage points and 0.5 percentage points for the three and nine months ended September 30, 2017 , respectively), with an offsetting decrease to administrative expenses. This increase was partially offset by integration-related claims handling expense savings realized of $4 million (0.4 percentage points) and $13 million (0.4 percentage points) for the three and nine months ended September 30, 2017 , respectively.

The policy acquisition cost ratio decreased 1.0 percentage point and 2.6 percentage points for the three and nine months ended September 30, 2017 , respectively, compared to the prior year periods which included the net unfavorable impact from purchase accounting adjustments (1.6 percentage points and 2.4 percentage points, respectively) related to the Chubb Corp acquisition. Excluding these adjustments, the policy acquisition cost ratio increased 0.6 points and decreased 0.2 points for the three and nine months ended September 30, 2017 , respectively. The increase for the three month period was primarily due to the non-renewal of the Fireman's Fund quota share treaty which had a higher acquisition cost ratio, partially offset by integration-related expense savings realized of $2 million (0.1 percentage points).

The administrative expense ratio decreased 2.8 percentage points and 2.6 percentage points for the three and nine months ended September 30, 2017 , respectively, due to integration-related expense savings realized of $6 million (0.6 percentage points) and $23 million (0.7 percentage points), respectively, lower employee benefit-related expenses of $15 million (1.4 percentage points) and $37 million (1.2 percentage point), respectively, and the updated loss expenses and administrative expenses allocation as noted above (0.6 percentage points and 0.5 percentage points for the three and nine months ended September 30, 2017 , respectively).

64

Table of Contents

North America Agricultural Insurance

The North America Agricultural Insurance segment comprises our North American based businesses that provide a variety of coverages in the U.S. and Canada including crop insurance, primarily Multiple Peril Crop Insurance (MPCI) and crop-hail through Rain and Hail Insurance Service, Inc. (Rain and Hail) as well as farm and ranch and specialty P&C commercial insurance products and services through our Chubb Agribusiness unit.

																										
 	Three Months Ended	 	 	 	 	 	Nine Months Ended	 	 	 	 	
 	September 30	 	 	% Change	 	 	September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16	 	 	2017		 	2016		 	YTD-17 vs.
YTD-16	 	
Net premiums written	$	926		 	$	849		 	9.0	%	 	$	1,390		 	$	1,288		 	7.9	%	
Net premiums earned	898		 	819		 	9.6	%	 	1,256		 	1,169		 	7.4	%	
Losses and loss expenses (1)	764		 	680		 	12.4	%	 	983		 	936		 	5.0	%	
Policy acquisition costs	49		 	48		 	2.1	%	 	75		 	77		 	(2.6	)%	
Administrative expenses	(1	)	 	1		 	NM	 	 	(4	)	 	(1	)	 	300.0	%	
Underwriting income	86		 	90		 	(4.4	)%	 	202		 	157		 	28.7	%	
Net investment income	6		 	5		 	20.0	%	 	18		 	15		 	20.0	%	
Other (income) expense	—		 	—		 	NM	 	 	1		 	—		 	NM	 	
Amortization of purchased intangibles	8		 	7		 	14.3	%	 	22		 	22		 	—	 	
Segment income	$	84		 	$	88		 	(4.5	)%	 	$	197		 	$	150		 	31.3	%	
Loss and loss expense ratio	85.1	 %	 	83.0	%	 	2.1		pts	 	78.3	 %	 	80.1	 %	 	(1.8	)	pts	
Policy acquisition cost ratio	5.4	 %	 	5.9	%	 	(0.5	)	pts	 	6.0	 %	 	6.6	 %	 	(0.6	)	pts	
Administrative expense ratio	(0.1	)	 	—		 	(0.1	)	pts		 	(0.4	)%	 	(0.1	)%	 	(0.3	)	pts	
Combined ratio	90.4	 %	 	88.9	%	 	1.5		pts		 	83.9	 %	 	86.6	 %	 	(2.7	)	pts	
NM – not meaningful

(1)  	Losses on crop derivatives were $5 million $7 million for the three and nine months ended September 30, 2017, respectively, compared with gains on crop derivatives of $3 million and $1 million for the prior year periods, respectively. These gains (losses) are included in Net realized gains (losses) in our Consolidated statements of operations but are classified to Losses and loss expenses for purposes of presenting North America Agricultural Insurance underwriting income.	

Premiums
Net premiums written increased $77 million and $102 million for the three and nine months ended September 30, 2017 , respectively, primarily due to increased MPCI production related to the current crop year.

Net premiums earned increased $79 million and $87 million for the three and nine months ended September 30, 2017 , respectively, due to the factors described above.

Combined Ratio
The following table presents pre-tax catastrophe losses and pre-tax favorable prior period development:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		 	2017		 	2016		
Catastrophe losses, pre-tax	$	5		 	$	1		 	$	18		 	$	17		
Favorable prior period development, pre-tax	$	4		 	$	11		 	$	83		 	$	52		

Catastrophe losses through September 30, 2017 and 2016 were primarily from our farm, ranch, and specialty P&C businesses.

For the three and nine months ended September 30, 2017 , net favorable prior period development was $4 million and $83 million, respectively. For the nine months ended September 30, 2017 , the prior period development amount included $ 140 million of favorable incurred losses and $ 4 million of lower acquisition costs due to lower than expected MPCI losses for the 2016 crop year, partially offset by a $61 million decrease in net premiums earned related to the MPCI profit and loss calculation formula. For the three and nine months ended September 30, 2016, net favorable prior period development was $11 million and $52 million, respectively. For the nine months ended September 30, 2016, the prior period development

65

Table of Contents

amount included $85 million of favorable incurred losses due to lower than expected MPCI losses for the 2015 crop year, partially offset by a $48 million of unfavorable decrease in net premiums earned related to the government's crop insurance profit and loss calculation formula. Also, included in prior period development but not impacting the loss and loss expense ratio was a $4 million favorable benefit of ceded profit share commissions earned from third-party reinsurers.
The following table presents the impact of catastrophe losses and prior period reserve development on our loss and loss expense ratio: 

												
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017		 	2016		 	2017		 	2016		
Loss and loss expense ratio	85.1	 %	 	83.0	 %	 	78.3	 %	 	80.1	 %	
Catastrophe losses	(0.5	)%	 	(0.1	)%	 	(1.4	)%	 	(1.4	)%	
Prior period development	0.3	 %	 	1.3	 %	 	7.0	 %	 	4.7	 %	
Loss and loss expense ratio, adjusted	84.9	 %	 	84.2	 %	 	83.9	 %	 	83.4	 %	

The adjusted loss and loss expense ratio increased 0.7 percentage points and 0.5 percentage points for the three and nine months ended September 30, 2017 , respectively.

The policy acquisition cost ratio decreased 0.5 percentage points for the three months ended September 30, 2017 primarily due to increases in net earned premiums earned as described above. For the nine months ended September 30, 2017 , the policy acquisition ratio decreased 0.6 percentage point primarily due to lower direct commissions in the current year. The administrative expense ratio remained relatively flat for the three months ended September 30, 2017 . For the nine months ended September 30, 2017 , the administrative expense ratio decreased 0.3 percentage points primarily due to higher Administrative and Operating (A&O) reimbursements.

66

Table of Contents

Overseas General Insurance

Overseas General Insurance segment comprises Chubb International and Chubb Global Markets (CGM). Chubb International comprises our commercial P&C traditional and specialty lines serving large corporations, middle market and small customers, A&H and traditional and specialty personal lines business serving local territories outside the U.S., Bermuda, and Canada. CGM, our London-based international commercial P&C excess and surplus lines business, includes Lloyd's of London (Lloyd's) Syndicate 2488. Chubb provides funds at Lloyd's to support underwriting by Syndicate 2488 which is managed by ACE Underwriting Agencies Limited. The reinsurance operations of CGM are included in the Global Reinsurance segment.

																										
 	Three Months Ended	 	 	 	 	 	Nine Months Ended	 	 	 	 	
 	September 30	 	 	% Change	 	 	September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16	 	 	2017		 	2016		 	YTD-17 vs.
YTD-16	 	
Net premiums written (1)	$	1,963		 	$	1,940		 	1.2	%	 	$	6,169		 	$	6,012		 	2.6	%	
Net premiums earned	2,064		 	2,034		 	1.4	%	 	6,018		 	6,082		 	(1.1	)%	
Losses and loss expenses	1,281		 	843		 	52.0	%	 	3,316		 	2,953		 	12.3	%	
Policy acquisition costs	569		 	546		 	4.2	%	 	1,653		 	1,586		 	4.2	%	
Administrative expenses	246		 	261		 	(5.7	)%	 	734		 	801		 	(8.4	)%	
Underwriting income (loss) (2)	(32	)	 	384		 	NM	 	 	315		 	742		 	(57.5	)%	
Net investment income	164		 	152		 	7.9	%	 	460		 	445		 	3.4	%	
Other (income) expense	(10	)	 	(6	)	 	66.7	%	 	(14	)	 	(16	)	 	(12.5	)%	
Amortization of purchased intangibles	11		 	12		 	(8.3	)%	 	33		 	36		 	(8.3	)%	
Segment income	$	131		 	$	530		 	(75.3	)%	 	$	756		 	$	1,167		 	(35.2	)%	
Loss and loss expense ratio	62.1	%	 	41.5	%	 	20.6		pts		 	55.1	%	 	48.6	%	 	6.5		pts		
Policy acquisition cost ratio	27.6	%	 	26.8	%	 	0.8		pts		 	27.5	%	 	26.1	%	 	1.4		pts		
Administrative expense ratio	11.9	%	 	12.9	%	 	(1.0	)	pts		 	12.2	%	 	13.1	%	 	(0.9	)	pts		
Combined ratio	101.6	%	 	81.2	%	 	20.4		pts		 	94.8	%	 	87.8	%	 	7.0		pts		
		
(1)  	For the three and nine months ended September 30, 2017 , net premiums written increased $22 million and $218 million , or 1.2 percent and 3.7 percent, respectively, on a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period. 	
		
(2)  	For the three and nine months ended September 30, 2017 , underwriting income decreased $425 million and $436 million, or 108.1 percent and 58.1 percent, respectively, on a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period.	

Premiums
Net premiums written increased $23 million , or $22 million on a constant-dollar basis, for the three months ended September 30, 2017 , driven by growth in personal lines business, primarily from new automobile business written in Latin America, as well as growth across most property and casualty (P&C) lines, primarily in Asia and Europe. Merger-related underwriting actions ( $30 million ) and reinstatement premiums related to catastrophe events in the quarter ($9 million) partially offset this growth.

Net premiums written increased $157 million , or $218 million on a constant-dollar basis, for the nine months ended September 30, 2017 , due to the timing of the Chubb Corp acquisition which excluded approximately $215 million of production in the prior year generated prior to the acquisition close on January 14, 2016 (14-day stub period). This increase was partially offset by merger-related underwriting actions ( $111 million ) and the impact of a merger-related accounting policy adjustment in the fourth quarter of 2016 to align the timing of premium recognition ( $73 million ). Excluding these items, net premiums written increased $187 million on a constant-dollar basis, due to growth in personal lines and P&C lines, as described above.

Net premiums earned increased $30 million , or $19 million on a constant-dollar basis, for the three months ended September 30, 2017 , primarily due to growth in personal lines and P&C lines as noted above. Net premiums earned decreased $64 million , or $34 million on a constant-dollar basis, for the nine months ended September 30, 2017 , primarily due to a higher mix of multi-year policies written in the current year in comparison to the growth in net premiums written, as well as from the merger-related underwriting actions described above. This decrease was partially offset by growth in the quarter and from the favorable impact of the 14-day stub period, as noted above.

67

Table of Contents

Overseas General Insurance conducts business internationally and in most major foreign currencies. The following tables present a regional breakdown of Overseas General Insurance net premiums written: 

																								
 	Three Months Ended September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2017
% of Total		 	2016		 	2016
% of Total		 	C$ (1)
 2016		 	Q-17 vs.
Q-16		 	C$ (1) Q-17 vs.
Q-16		
Region	 	 	 	 	 	 	 	 	 	 	 	 	 	
Europe	$	691		 	35	%	 	$	712		 	37	%	 	$	706		 	(2.9	)%	 	(2.1	)%	
Latin America	514		 	26	%	 	470		 	24	%	 	480		 	9.4	 %	 	7.1	 %	
Asia	681		 	35	%	 	663		 	34	%	 	659		 	2.7	 %	 	3.3	 %	
Other (2)	77		 	4	%	 	95		 	5	%	 	96		 	(18.9	)%	 	(19.8	)%	
Net premiums written	$	1,963		 	100	%	 	$	1,940		 	100	%	 	$	1,941		 	1.2	 %	 	1.2	 %	
(1) On a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period. 
(2) Combined International, Eurasia and Africa region, and other international.

																								
 	Nine Months Ended September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2017
% of Total		 	2016		 	2016
% of Total		 	C$ (1)
 2016		 	YTD-17 vs.
YTD-16		 	C$ (1) YTD-17 vs.
YTD-16		
Region	 	 	 	 	 	 	 	 	 	 	 	 	 	
Europe	$	2,447		 	40	%	 	$	2,418		 	40	%	 	$	2,317		 	1.2	 %	 	5.6	 %	
Latin America	1,519		 	25	%	 	1,435		 	24	%	 	1,472		 	5.9	 %	 	3.2	 %	
Asia	1,931		 	31	%	 	1,874		 	31	%	 	1,882		 	3.0	 %	 	2.6	 %	
Other (2)	272		 	4	%	 	285		 	5	%	 	280		 	(4.6	)%	 	(2.9	)%	
Net premiums written	$	6,169		 	100	%	 	$	6,012		 	100	%	 	$	5,951		 	2.6	 %	 	3.7	 %	
(1) On a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period. 
(2) Combined International, Eurasia and Africa region, and other international.

Combined Ratio
The following table presents pre-tax catastrophe losses and pre-tax favorable prior period development:

																
 	Three Months Ended September 30	 	 	Nine Months Ended September 30	 	
(in millions of U.S. dollars)	2017		 	2016		 	2017		 	2016		
Catastrophe losses, pre-tax	$	326		 	$	20		 	$	386		 	$	111		
Favorable prior period development, pre-tax	$	108		 	$	223		 	$	184		 	$	338		

Catastrophe losses through September 30, 2017 and 2016 were primarily from the following events:
		
•	2017: Hurricane Maria, Hurricane Harvey, Hurricane Irma, Earthquakes in Mexico, Cyclone Debbie in Australia, and flooding in Latin America	
		
•	2016: Severe weather related events in Europe, an earthquake in Ecuador, and flooding in the U.K.	

Favorable prior period development included a charge of $32 million in the first quarter of 2017, reflecting the change in the discount rate in the U.K. (Ogden rate) which impacted our casualty lines. Refer to Note 5 to the Consolidated Financial Statements for additional information.

68

Table of Contents

The following table presents the impact of catastrophe losses and prior period reserve development on our loss and loss expense ratio: 

												
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017		 	2016		 	2017		 	2016		
Loss and loss expense ratio	62.1	 %	 	41.5	 %	 	55.1	 %	 	48.6	 %	
Catastrophe losses	(16.0	)%	 	(1.1	)%	 	(6.5	)%	 	(1.9	)%	
Prior period development	5.2	 %	 	11.0	 %	 	3.1	 %	 	5.6	 %	
Loss and loss expense ratio, adjusted	51.3	 %	 	51.4	 %	 	51.7	 %	 	52.3	 %	

The adjusted loss and loss expense ratio remained relatively flat and decreased 0.6 percentage points for the three and nine months ended September 30, 2017 , respectively. The decrease for the nine months was primarily due to a change in the mix of business towards products and regions that have a lower loss ratio and a higher acquisition cost ratio (0.5 percentage points) and integration-related claims handling expense savings realized of $27 million ( 0.4 percentage points).
The policy acquisition cost ratio increased 0.8 percentage points and 1.4 percentage points for the three and nine months ended September 30, 2017 , respectively, compared to the prior year periods, which included the net favorable impact of initial year purchase accounting adjustments related to the Chubb Corp acquisition (0.2 percentage points and 0.4 percentage points, respectively). Excluding this item, the policy acquisition cost ratio increased 0.6 percentage points and 1.0 percentage points for the three and nine months ended September 30, 2017 , respectively, primarily due to a change in the mix of business towards products and regions within personal lines which have a higher acquisition cost ratio and a lower loss ratio (0.3 percentage point and 0.5 percentage points). In addition, the adverse impact of aligning accounting policy after the Chubb Corp acquisition in the prior year increased the policy acquisition ratio by 0.2 percentage points for both the three and nine months ended September 30, 2017 . These increases were partially offset by integration-related expense savings realized of $4 million ( 0.2 percentage points) and $12 million ( 0.2 percentage points) for the three and nine months ended September 30, 2017 , respectively.

The administrative expense ratio decreased 1.0 percentage point and 0.9 percentage points for the three and nine months ended September 30, 2017 , respectively, primarily due to integration-related expense savings realized of $29 million ( 1.4 percentage points) and $92 million ( 1.4 percentage points), respectively. This decrease was partially offset by the impact of merit-based salary increases, inflation, and increased spending to support growth initiatives.

69

Table of Contents

Global Reinsurance

The Global Reinsurance segment represents our reinsurance operations comprising Chubb Tempest Re Bermuda, Chubb Tempest Re USA, Chubb Tempest Re International, and Chubb Tempest Re Canada. Global Reinsurance markets its reinsurance products worldwide under the Chubb Tempest Re brand name and provides a broad range of traditional reinsurance coverage to a diverse array of primary P&C companies.

																								
 	Three Months Ended	 	 	 	 	 	Nine Months Ended	 	 	 	 	
 	September 30	 	 	% Change	 	 	September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16	 	 	2017		 	2016		 	YTD-17 vs.
YTD-16	 	
Net premiums written	$	191		 	$	131		 	47.1	%	 	$	580		 	$	562		 	3.3	%	
Net premiums earned	185		 	156		 	20.4	%	 	542		 	543		 	—	 	
Losses and loss expenses	295		 	49		 	NM	 	 	435		 	225		 	93.3	%	
Policy acquisition costs	43		 	42		 	2.4	%	 	137		 	142		 	(3.5	)%	
Administrative expenses	11		 	12		 	(8.3	)%	 	33		 	40		 	(17.5	)%	
Underwriting income (loss)	(164	)	 	53		 	NM	 	 	(63	)	 	136		 	NM	 	
Net investment income	80		 	67		 	19.4	%	 	207		 	199		 	4.0	%	
Other (income) expense	(3	)	 	—		 	NM	 	 	(2	)	 	(3	)	 	(33.3	)%	
Segment income (loss)	$	(81	)	 	$	120		 	NM	 	 	$	146		 	$	338		 	(56.8	)%	
Loss and loss expense ratio	158.2	%	 	31.3	%	 	126.9	pts		 	80.1	%	 	41.5	%	 	38.6	pts		
Policy acquisition cost ratio	23.4	%	 	27.1	%	 	(3.7)	pts		 	25.3	%	 	26.3	%	 	(1.0)	pts		
Administrative expense ratio	5.8	%	 	7.9	%	 	(2.1)	pts		 	6.1	%	 	7.2	%	 	(1.1)	pts		
Combined ratio	187.4	%	 	66.3	%	 	121.1	pts		 	111.5	%	 	75.0	%	 	36.5	pts		
NM - not meaningful

Premiums
Net premiums written increased $ 60 million for the three months ended September 30, 2017 , primarily due to higher catastrophe reinstatement premiums ( $37 million ) and a new treaty written in the quarter ($14 million). In addition, the prior year included a reduction in treaty premium estimates ( $10 million ) that lowered net premiums written. The increase of $18 million in net premiums written for the nine months ended September 30, 2017 was also due to the timing of the Chubb Corp acquisition which excluded approximately $20 million of production generated prior to the Chubb Corp acquisition close on January 14, 2016 (14-day stub period), partially offset by an unfavorable impact from merger-related underwriting actions of $10 million and declining rates and increasing competition.

Net premiums earned increased $ 29 million and remained relatively flat for the three and nine months ended September 30, 2017 , respectively, primarily due to the factors described above.
Combined Ratio
The following table presents pre-tax catastrophe losses and pre-tax favorable prior period development net of related reinstatement premiums:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S dollars)	2017		 	2016		 	2017		 	2016		
Catastrophe losses gross of related reinstatement premiums, pre-tax	$	268		 	$	11		 	$	271		 	$	64		
Favorable prior period development net of related reinstatement premiums, pre-tax	$	41		 	$	28		 	$	64		 	$	78		

Catastrophe losses through September 30, 2017 and 2016 were primarily from the following events:
		
•	2017: Hurricane Irma, Hurricane Maria, Hurricane Harvey, and severe weather related events in the U.S.	
		
•	2016: Fort McMurray wildfire and severe weather-related events in Europe, the U.S. and Canada	

70

Table of Contents

Favorable prior period development included a charge of $9 million in the first quarter of 2017, reflecting the change in the discount rate in the U.K. (Ogden rate) which impacted our motor and excess liability lines. Refer to Note 5 to the Consolidated Financial Statements for additional information.

The following table presents the impact of catastrophe losses and prior period reserve development net of related reinstatement premiums on our loss and loss expense ratio:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
 	2017		 	2016		 	2017		 	2016		
Loss and loss expense ratio	158.2	 %	 	31.3	 %	 	80.1	 %	 	41.5	 %	
Catastrophe losses and related reinstatement premiums	(139.9	)%	 	(7.2	)%	 	(47.6	)%	 	(11.6	)%	
Prior period development net of related reinstatement premiums (1)	28.2	 %	 	20.1	 %	 	12.1	 %	 	15.4	 %	
Loss and loss expense ratio, adjusted	46.5	 %	 	44.2	 %	 	44.6	 %	 	45.3	 %	
(1)  Reinstatement premiums expensed (collected) on prior period development - pre-tax	$	3		 	$	5		 	$	(4	)	 	$	5		

The adjusted loss and loss expense ratio increased 2.3 percentage points for the three months ended September 30, 2017 , compared to the prior year due to a change in the mix of business in the U.S. to casualty lines which have a higher loss ratio from property lines which have a lower loss ratio. However, this increase was more than offset for the year, reflecting a change in the mix of business in 2017 towards products that have a lower loss ratio, resulting in a decrease in the adjusted loss and loss expense ratio of 0.7 percentage points for the nine months ended September 30, 2017 .

The policy acquisition cost ratio decreased 3.7 percentage points and 1.0 percentage point for the three and nine months ended September 30, 2017 , respectively, primarily due to a change in the mix of business towards regions and products that have lower acquisition cost ratios, and primarily due to favorable catastrophe reinstatement premiums, which were fully earned in the three months ended September 30, 2017.

The administrative expense ratio decreased 2.1 percentage points and 1.1 percentage points for the three and nine months ended September 30, 2017 , respectively, primarily reflecting expense reductions implemented to align our cost structure with our premium base and integration-related expense savings realized, coupled with higher net premiums earned due to catastrophe reinstatement premiums.

71

Table of Contents

Life Insurance

The Life Insurance segment comprises Chubb's international life operations (Chubb Life), Chubb Tempest Life Re (Chubb Life Re), and the North American supplemental A&H and life business of Combined Insurance. We assess the performance of our life business based on Life Insurance underwriting income, which includes Net investment income and (Gains) losses from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.

																						
 	Three Months Ended	 	 			 	Nine Months Ended	 	 			
 	September 30	 	 	% Change		 	September 30	 	 	% Change		
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16		 	2017		 	2016		 	YTD-17 vs.
YTD-16		
Net premiums written	$	539		 	$	532		 	1.1	 %	 	$	1,586		 	$	1,575		 	0.6	 %	
Net premiums earned	527		 	512		 	2.8	 %	 	1,548		 	1,521		 	1.8	 %	
Losses and loss expenses	181		 	174		 	4.0	 %	 	556		 	498		 	11.6	 %	
Policy benefits (1)	169		 	155		 	9.0	 %	 	500		 	427		 	17.1	 %	
(Gains) losses from fair value changes in separate account assets (1)	(24	)	 	(22	)	 	9.1	 %	 	(70	)	 	(22	)	 	218.2	 %	
Policy acquisition costs	132		 	127		 	3.9	 %	 	376		 	386		 	(2.6	)%	
Administrative expenses	77		 	77		 	—		 	226		 	226		 	—		
Net investment income	78		 	71		 	9.9	 %	 	230		 	207		 	11.1	 %	
Life Insurance underwriting income	70		 	72		 	(2.8	)%	 	190		 	213		 	(10.8	)%	
Other (income) expense (1)	5		 	2		 	150.0	 %	 	10		 	8		 	25.0	 %	
Amortization of purchased intangibles	1		 	1		 	—		 	2		 	2		 	—		
Segment income	$	64		 	$	69		 	(7.2	)%	 	$	178		 	$	203		 	(12.3	)%	
NM - not meaningful
		
(1)  	(Gains) losses from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP have been reclassified from Other income (expense) for purposes of presenting Life Insurance underwriting income. The offsetting movement in the separate account liabilities is included in Policy benefits.	

Premiums
Net premiums written increased $ 7 million and $ 11 million for the three and nine months ended September 30, 2017, respectively, due to growth in our Combined Insurance supplemental A&H program business and our Asian international life operations. This growth was partially offset by planned declines in our Latin American operations, reflecting merger-related underwriting actions of $9 million and $33 million for the three and nine months ended September 30, 2017, respectively, and in our life reinsurance business, which continues to decline as no new business is currently being written.
Deposits
The following table presents deposits collected on universal life and investment contracts:

																																				
 	Three Months Ended	 	 			 	 	 	Nine Months Ended	 	 	 	 			
 	September 30	 	 	% Change	 	 	September 30	 	 	% Change	 	
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	C$ (1) 2016		 	Q-17 vs.
Q-16		 	C$ (1) Q-17 vs.
Q-16		 	2017		 	2016		 	C$ (1) 2016		 	YTD-17 vs. YTD-16		 	C$ (1)   YTD-17 vs. YTD-16		
Deposits collected on Universal life and investment contracts	$	422		 	$	273		 	$	279		 	54.6	%	 	51.4	%	 	$	1,048		 	$	748		 	$	767		 	40.1	%	 	36.7	%	
(1) On a constant-dollar basis. Amounts are calculated by translating prior period results using the same local currency exchange rates as the comparable current period. 

Deposits collected on universal life and investment contracts (life deposits) are not reflected as revenues in our Consolidated statements of operations in accordance with GAAP.  New life deposits are an important component of production, and although they do not significantly affect current period income from operations, they are key to our efforts to grow our business. Life deposits collected increased for the three and nine months ended September 30, 2017 , due to growth in Taiwan, partially offset by a decline in Korea.

72

Table of Contents

Life Insurance underwriting income
Life Insurance underwriting income decreased $ 2 million and $ 23 million for the three and nine months ended September 30, 2017 , respectively, due to the adverse impact of updating our long-term benefit ratio in our variable annuity business in the fourth quarter of 2016 ($15 million and $48 million for the three and nine months ended September 30, 2017, respectively). These decreases were partially offset by increases in underwriting income in our international life operations, reflecting improved margins and higher net investment income.

Corporate

Corporate results primarily include the results of our non-insurance companies, income and expenses not attributable to reportable segments and loss and loss expenses of asbestos and environmental (A&E) liabilities and certain other run-off exposures.

Our exposure to A&E claims principally arises out of liabilities acquired when we purchased Westchester Specialty in 1998, CIGNA’s P&C business in 1999, and legacy Chubb Corp A&E claims in 2016. Corporate staff expenses and net investment income of Chubb Limited, including the amortization of the fair value adjustment on acquired invested assets and debt, interest expense, amortization of purchased intangibles related to the Chubb Corp acquisition, Chubb integration expenses and other merger-related expenses and the results of Chubb Group Management and Holdings Ltd, and Chubb INA Holdings Inc. are reported within Corporate.

																						
 	Three Months Ended	 	 	 	 	Nine Months Ended	 	 	 	
 	September 30	 	 	% Change		 	September 30	 	 	% Change		
(in millions of U.S. dollars, except for percentages)	2017		 	2016		 	Q-17 vs.
Q-16		 	2017		 	2016		 	YTD-16 vs.
YTD-15		
Losses and loss expenses	$	89		 	$	63		 	41.3	 %	 	$	145		 	$	87		 	66.7	 %	
Administrative expenses	64		 	57		 	12.3	 %	 	187		 	192		 	(2.6	)%	
Underwriting loss	153		 	120		 	27.5	 %	 	332		 	279		 	19.0	 %	
Net investment income (loss)	(69	)	 	(86	)	 	(19.8	)%	 	(220	)	 	(271	)	 	(18.8	)%	
Interest expense	150		 	152		 	(1.3	)%	 	451		 	451		 	—		
Net realized gains (losses)	(5	)	 	97		 	NM		 	91		 	(511	)	 	NM		
Other (income) expense	(83	)	 	(70	)	 	18.6	 %	 	(257	)	 	(59	)	 	335.6	 %	
Amortization expense (benefit) of purchased intangibles	41		 	(20	)	 	NM		 	125		 	(60	)	 	NM		
Chubb integration expenses	50		 	115		 	(56.5	)%	 	233		 	361		 	(35.5	)%	
Income tax expense (benefit)	(85	)	 	277		 	NM		 	243		 	556		 	(56.3	)%	
Net loss	$	(300	)	 	$	(563	)	 	(46.7	)%	 	$	(1,256	)	 	$	(2,310	)	 	(45.6	)%	
NM - not meaningful

Losses and loss expenses in both years were primarily due to unfavorable prior period development related to Brandywine environmental exposures, as well as unallocated loss adjustment expenses of the A&E claim operations. Refer to the Prior Period Development section for further information.

Administrative expenses increased $ 7 million for the three months ended September 30, 2017 reflecting in-part merit-based salary increases. For the nine months ended September 30, 2017, administrative expenses decreased $5 million reflecting integration-related expense savings and lower post-retirement benefit expenses.

Net investment income for the three and nine months ended September 30, 2017 included amortization of $80 million and $256 million, respectively, related to the fair value adjustment on invested assets related to the Chubb Corp acquisition. Net investment income for the three and nine months ended September 30, 2016 included amortization of $91 million and $292 million, respectively, related to the fair value adjustment on invested assets related to the Chubb Corp acquisition. Excluding the fair value adjustment amortization, net investment income increased by $6 million and $15 million for the three and nine months ended September 30, 2017 , respectively, primarily due to a higher overall invested asset base.

73

Table of Contents

Interest expense decreased $2 million for the three months ended September 30, 2017 primarily due to the conversion of the interest rate on our $1.0 billion of unsecured junior subordinated capital securities to a floating rate, equal to the three-month LIBOR plus 2.25 percentage points ($7 million) and the retirement of the $500 million of 5.7% senior debt that matured in February 2017 ($7 million). These decreases were partially offset by higher interest expense related to our notional cash pool in the quarter and letter of credit fees ($11 million). For the nine months ended September 30, 2017 , interest expense remained flat as the decrease noted above was offset by the timing of the Chubb Corp acquisition in the prior year which excluded approximately $8 million of interest expense prior to the Chubb Corp acquisition close on January 14, 2016.

For the three and nine months ended September 30, 2017, net realized gains (losses) of $ (5) million and $ 91 million , respectively, included foreign exchange gains of $15 million and $10 million and losses on the investment portfolio of $(7) million and $(8) million, respectively. In addition, the three and nine months ended September 30, 2017, included gains associated with a net decrease in the fair value of GLB liabilities of $54 million and $265 million, respectively. The decrease in the fair value of GLB liabilities was primarily due to the impact of updating aspects of our valuation model relating to interest rates and higher global equity market levels. In addition, we maintain positions in derivative instruments that decrease in fair value when the S&P 500 index increases. During the three and nine months ended September 30, 2017, we experienced realized losses of $57 million and $169 million, respectively, related to these derivative instruments.

Net realized gains for the three months ended September 30, 2016 , were primarily associated with a net decrease in the fair value of GLB liabilities. The decrease was primarily due to higher global equity market levels and higher interest rates, partially offset by the unfavorable impact of discounting future claims for one less quarter. For the nine months ended September 30, 2016 , net realized losses were primarily associated with a net increase in the fair value of GLB liabilities. The increase was primarily due to lower interest rates and the unfavorable impact of discounting future claims for three less quarters. In addition, we maintain positions in derivative instruments that decrease in fair value when the S&P 500 index increases. During the three and nine months ended September 30, 2016 , we experienced realized losses of $ 45 million and $ 88 million , respectively, related to these derivative instruments. Additionally, there were realized gains (losses) on our investment portfolios during the three and nine months ended September 30, 2016 of $ 21 million and $ (199) million, respectively. For further discussion of the remaining Net realized gains and (losses), refer to the Net realized and unrealized gains and (losses) section.

For the three and nine months ended September 30, 2017 , Other (income) expense recognized in Corporate was $ (83) million and $(257) million , respectively, compared to $ (70) million and $(59) million in the prior year, respectively, comprised of:

•	Other (income) in 2017 of $(89) million and $(284) million, respectively, from our share of net realized gains from partially-owned investment companies, compared to realized gains in 2016 of $(72) million and $(65) million, respectively, primarily reflecting the change in market value of these investments.	

•	Other expense in 2017 of $6 million and $27 million, respectively, compared to other expense in 2016 of $2 million and $6 million, respectively. The higher expense in 2017 was primarily due to an increase in capital taxes resulting from a higher equity base after the Chubb Corp acquisition.	

Refer to the Other Income and Expense Items section for further information.

Amortization expense of purchased intangibles increased $ 61 million and $185 million for the three and nine months ended September 30, 2017 , respectively, primarily reflecting the increase in intangible amortization expense related to agency distribution relationships and renewal rights and lower amortization benefit from the fair value adjustment of Unpaid losses and loss expenses acquired as part of the Chubb Corp acquisition. Refer to the Amortization of purchased intangibles and Other amortization section for further information.

74

Table of Contents

Chubb integration expenses
The following table presents the components of Chubb integration expenses:

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S dollars)	2017		 	2016		 	2017		 	2016		
Personnel-related expenses	$	25		 	$	37		 	$	140		 	$	153		
Leases and real estate termination costs	—		 	21		 	22		 	34		
Consulting fees	6		 	13		 	20		 	37		
Rebranding	7		 	12		 	13		 	33		
Advisor fees	—		 	—		 	—		 	38		
Other	12		 	32		 	38		 	66		
Totals	$	50		 	$	115		 	$	233		 	$	361		

Chubb integration expenses are one-time in nature and are not related to the on-going business activities of the segments. The Chief Executive Officer does not manage segment results or allocate resources to segments when considering these costs and they are therefore excluded from our definition of segment income.

Effective income tax rate
Our effective income tax rate, which we calculate as income tax expense divided by income before income tax, is dependent upon the mix of earnings from different jurisdictions with various tax rates. A change in the geographic mix of earnings would change the effective income tax rate.

For the three months ended September 30, 2017 and 2016, our effective rate was 54.7 percent and 17.0 percent, respectively. The change in the effective income tax rate for the three month period was primarily due to the impact of the operating loss during the current year period. The rate was also driven by a reduction of income tax expense due to the adoption of the new stock based compensation guidance in January 2017 (see Note 1 for additional information on the adoption of this guidance) as well as the recognition of a tax benefit associated with the finalization of the 2016 tax return.

For the nine months ended September 30, 2017 and 2016, our effective tax rate was 9.4 percent and 18.1 percent, respectively. The decrease in the effective income tax rate was due to the impact of the operating loss during the third quarter of 2017 as well as realized gains being generated in lower taxing jurisdictions in the current year compared to realized losses generated in lower taxing jurisdictions in the prior year. The decrease was also driven by a reduction on income tax expenses due to the adoption of the new stock compensation guidance in January 2017 (see Note 1 for additional information on the adoption of this guidance). Additionally, the decrease was also driven by a reduction to income tax expense of approximately $25 million in the current year primarily related to an accounting election we made relating the treatment of certain, discrete investments that resulted in the release of the associated tax liability.

The lower tax rates attributed to our foreign operations primarily reflect the lower corporate tax rates that prevail outside of the U.S. During the nine months ended September 30, 2017 , approximately 63 percent of our total pre-tax income was tax effected based on these lower rates compared with 51 percent for the nine months ended September 30, 2016. The significant lower taxing jurisdictions outside of the U.S. include the U.K., Switzerland, and Bermuda with effective federal income tax rates in those countries of 19.25 percent, 7.83 percent, and 0.0 percent, respectively.

75

Table of Contents

	
	
Other Income and Expense Items	

																
 	Three Months Ended	 	 	Nine Months Ended	 	
 	September 30	 	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		 	2017		 	2016		
Equity in net (income) loss of partially-owned entities	$	(103	)	 	$	(79	)	 	$	(302	)	 	$	(95	)	
(Gains) losses from fair value changes in separate account assets (1)	(24	)	 	(22	)	 	(70	)	 	(22	)	
Federal excise and capital taxes	6		 	2		 	24		 	8		
Other	3		 	8		 	15		 	17		
Other (income) expense	$	(118	)	 	$	(91	)	 	$	(333	)	 	$	(92	)	
		
(1)  	Related to (gains) losses from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP.	

Other (income) expense includes equity in net (income) loss of partially-owned entities, which includes our share of net (income) loss related to partially-owned investment companies (private equity) and partially-owned insurance companies. Also included in Other (income) expense are (Gains) losses from fair value changes in separate account assets that do not qualify for separate account reporting under GAAP. The offsetting movement in the separate account liabilities is included in Policy benefits in the Consolidated statements of operations. Certain federal excise and capital taxes incurred as a result of capital management initiatives are included in Other (income) expense as these are considered capital transactions and are excluded from underwriting results.

	
					
Amortization of purchased intangibles and Other amortization	

Amortization expense related to purchased intangibles was $ 65 million and $194 million for the three and nine months ended September 30, 2017 , respectively, compared with $ 4 million and $16 million , respectively, in the prior year periods. The increase in amortization expense of purchased intangibles primarily reflects higher intangible amortization expense related to agency distribution relationships and renewal rights and lower amortization benefit from the fair value adjustment on Unpaid losses and loss expenses.

The following table presents, as of September 30, 2017 , the estimated pre-tax amortization expense (benefit) of purchased intangibles, at current foreign currency exchange rates, for the fourth quarter of 2017 and the next five years: 

																								
 	Associated with the Chubb Corp Acquisition	 	 	 	 	 	
For the Years Ending December 31
(in millions of U.S. dollars)	Agency distribution relationships and renewal rights		 	Internally developed technology		 	Fair value adjustment on Unpaid losses and loss expenses		 	Total (1)		 	Other intangible assets  (2)		 	Total
Amortization of purchased intangibles		
Fourth quarter of 2017	$	74		 	$	8		 	$	(41	)	 	$	41		 	$	21		 	$	62		
2018	327		 	32		 	(103	)	 	256		 	85		 	341		
2019	284		 	—		 	(63	)	 	221		 	72		 	293		
2020	242		 	—		 	(36	)	 	206		 	63		 	269		
2021	219		 	—		 	(20	)	 	199		 	55		 	254		
2022	199		 	—		 	(15	)	 	184		 	51		 	235		
Total	$	1,345		 	$	40		 	$	(278	)	 	$	1,107		 	$	347		 	$	1,454		

(1)  	Recorded in Corporate.	
		
(2)  	Recorded in applicable segment(s) that acquired the intangible assets.	

Reduction of deferred tax liability associated with intangible assets related to the Chubb Corp acquisition
The following table presents, as of September 30, 2017 , the expected reduction of the deferred tax liability associated with intangible assets related to the Chubb Corp acquisition (which reduces as agency distribution relationships and renewal rights and internally developed technology amortize), at current foreign currency exchange rates, for the fourth quarter of 2017 and the next five years. For example, for the fourth quarter of 2017, the expected reduction to deferred tax liability of $29 million associated with intangible assets in the table below is calculated by applying the 35 percent expected tax rate against the sum of the estimated amortization of $82 million, comprising agency distribution relationships and renewal rights of $74 million ,

76

Table of Contents

and internally developed technology of $8 million . At September 30, 2017 , the remaining deferred tax liability associated with these intangibles was $1,991 million.

				
For the Years Ending December 31
(in millions of U.S. dollars)	Reduction of deferred tax liability associated with intangible assets related to the Chubb Corp acquisition		
Fourth quarter of 2017	$	29		
2018	126		
2019	99		
2020	85		
2021	77		
2022	70		
Total	$	486		

Amortization of the fair value adjustment on acquired invested assets and assumed long-term debt
The following table presents at September 30, 2017 , the expected amortization expense of the fair value adjustment on acquired invested assets, at current foreign currency exchange rates, and the expected amortization benefit from the amortization of the fair value adjustment on assumed long-term debt for the fourth quarter of 2017 and the next five years as follows:

								
 	Amortization (expense) benefit of the fair value adjustment on	 	
For the Years Ending December 31
(in millions of U.S. dollars)	Acquired invested assets (1)		 	Assumed long-term debt (2)		
Fourth quarter of 2017	$	(78	)	 	$	12		
2018	(305	)	 	31		
2019	(245	)	 	19		
2020	(205	)	 	19		
2021	(120	)	 	19		
2022	—		 	19		
Total	$	(953	)	 	$	119		

(1)  	Recorded as a reduction to Net investment income in the Consolidated statements of operations.	
		
(2)  	Recorded as a reduction to Interest expense in the Consolidated statements of operations.	

The estimate of amortization expense of the fair value adjustment on acquired invested assets could vary materially based on current market conditions, bond calls, overall duration of the acquired investment portfolio, and foreign exchange.

	
	
Net Investment Income	

															
 	Three Months Ended	 	Nine Months Ended	 	
 	September 30	 	September 30	 	
(in millions of U.S. dollars)	2017		 	2016		2017		 	2016		
Fixed maturities	$	748		 	$	715		$	2,219		 	$	2,044		
Short-term investments	34		 	24		91		 	69		
Equity securities	8		 	10		30		 	31		
Other investments	63		 	28		106		 	81		
Gross investment income (1)	853		 	777		2,446			2,225		
Investment expenses	(40	)	 	(38	)	(118	)	 	(104	)	
Net investment income (1)	$	813		 	$	739		$	2,328			$	2,121		
(1)   Includes amortization expense related to fair value adjustment of acquired invested assets related to the Chubb Corp acquisition	$	(80	)	 	$	(91	)	$	(256	)	 	$	(292	)	

77

Table of Contents

Net investment income is influenced by a number of factors including the amounts and timing of inward and outward cash flows, the level of interest rates, and changes in overall asset allocation. Net investment income increased 9.8 percent and 9.7 percent for the three and nine months ended September 30, 2017 , respectively, compared with the prior year periods. The increase for the three and nine months ended September 30, 2017 was primarily due to higher income from private equity income distributions that included a $44 million final distribution from a co-investment with one of our private equity fund partners and higher overall invested asset base. Additionally, prior year excluded $45 million of Net investment income generated prior to the Chubb Corp acquisition close on January 14, 2016.

Our average yield on invested assets for the three and nine months ended September 30, 2017 was 3.5 percent and 3.4 percent, respectively, and 3.4 percent for both the prior year periods, which is primarily driven by the yield on our fixed maturities. This compares to the average market yield, which represents the weighted average yield to maturity of our fixed income portfolio based on market prices of the holdings throughout the period, of 2.7 percent and 2.2 percent at September 30, 2017 and 2016, respectively.

	
	
Net Realized and Unrealized Gains (Losses)	

We take a long-term view with our investment strategy, and our investment managers manage our investment portfolio to maximize total return within certain specific guidelines designed to minimize risk. The majority of our investment portfolio is available for sale and reported at fair value. Our held to maturity investment portfolio is reported at amortized cost.

The effect of market movements on our available for sale investment portfolio impacts Net income (through Net realized gains (losses)) when securities are sold or when we record an Other-than-temporary impairment (OTTI) charge in Net income. For a discussion related to how we assess OTTI for all of our investments, including credit-related OTTI, and the related impact on Net income, refer to Note 3 c) to the Consolidated Financial Statements. Additionally, Net income is impacted through the reporting of changes in the fair value of derivatives, including financial futures, options, swaps, and GLB reinsurance. Changes in unrealized appreciation and depreciation on available for sale securities resulting from the revaluation of securities held, changes in cumulative foreign currency translation adjustment, and unrealized postretirement benefit liability adjustment, are reported as separate components of Accumulated other comprehensive income in Shareholders’ equity in the Consolidated balance sheets.

The following table presents our net realized and unrealized gains (losses): 

																								
 	Three Months Ended September 30, 2017	 	 	Three Months Ended September 30, 2016	 	
(in millions of U.S. dollars)	Net
Realized
Gains
(Losses)		 	Net
Unrealized
Gains
(Losses)		 	Net
Impact		 	Net
Realized
Gains
(Losses)		 	Net
Unrealized
Gains
(Losses)		 	Net
Impact		
Fixed maturities	$	6		 	$	134		 	$	140		 	$	27		 	$	195		 	$	222		
Fixed income derivatives	(14	)	 	—		 	(14	)	 	1		 	—		 	1		
Public equity	4		 	36		 	40		 	6		 	23		 	29		
Private equity	(3	)	 	(27	)	 	(30	)	 	(13	)	 	(4	)	 	(17	)	
Total investment portfolio   (1)	(7	)	 	143		 	136		 	21		 	214		 	235		
Variable annuity reinsurance derivative transactions, net of applicable hedges	(3	)	 	—		 	(3	)	 	44		 	—		 	44		
Other derivatives	(5	)	 	—		 	(5	)	 	3		 	—		 	3		
Foreign exchange	15		 	665		 	680		 	29		 	(124	)	 	(95	)	
Other	(10	)	 	(63	)	 	(73	)	 	3		 	5		 	8		
Net gains (losses) before tax	$	(10	)	 	$	745		 	$	735		 	$	100		 	$	95		 	$	195		
		
(1)  	For the three months ended September 30, 2017 , other-than-temporary impairments in Net realized gains (losses) included $5 million for fixed maturities, $1 million for public equity, and $2 million for private equity. For the three months ended September 30, 2016 , other-than-temporary impairments in Net realized gains (losses) included $7 million for fixed maturities, $1 million for public equity, and $4 million for private equity.	

78

Table of Contents

	
																								
 	Nine Months Ended September 30, 2017	 	 	Nine Months Ended September 30, 2016	 	
(in millions of U.S. dollars)	Net
Realized
Gains
(Losses)		 	Net
Unrealized
Gains
(Losses)		 	Net
Impact		 	Net
Realized
Gains
(Losses)		 	Net
Unrealized
Gains
(Losses)		 	Net
Impact		
Fixed maturities	$	17		 	$	813		 	$	830		 	$	(156	)	 	$	2,237		 	$	2,081		
Fixed income derivatives	(24	)	 	—		 	(24	)	 	(85	)	 	—		 	(85	)	
Public equity	10		 	79		 	89		 	39		 	52		 	91		
Private equity	(11	)	 	—		 	(11	)	 	3		 	(73	)	 	(70	)	
Total investment portfolio   (1)	(8	)	 	892		 	884		 	(199	)	 	2,216		 	2,017		
Variable annuity reinsurance derivative transactions, net of applicable hedges	96		 	—		 	96		 	(358	)	 	—		 	(358	)	
Other derivatives	(4	)	 	—		 	(4	)	 	1		 	—		 	1		
Foreign exchange	10		 	901		 	911		 	46		 	269		 	315		
Other	(10	)	 	(118	)	 	(128	)	 	—		 	8		 	8		
Net gains (losses) before tax	$	84		 	$	1,675		 	$	1,759		 	$	(510	)	 	$	2,493		 	$	1,983		
		
(1)  	For the nine months ended September 30, 2017 , other-than-temporary impairments in Net realized gains (losses) included $15 million for fixed maturities, $9 million for public equity, and $11 million for private equity. For the nine months ended September 30, 2016 , other-than-temporary impairments in Net realized gains (losses) included $77 million for fixed maturities, $7 million for public equity, and $7 million for private equity.	

	
Investments	

Our investment portfolio is invested primarily in publicly traded, investment grade, fixed income securities with an average credit quality of A/Aa as rated by the independent investment rating services Standard and Poor’s (S&P)/ Moody’s Investors Service (Moody’s). The portfolio is externally managed by independent, professional investment managers and is broadly diversified across geographies, sectors, and issuers. Other investments principally comprise direct investments, investment funds, and limited partnerships. We hold no collateralized debt obligations in our investment portfolio, and we provide no credit default protection. We have long-standing global credit limits for our entire portfolio across the organization. Exposures are aggregated, monitored, and actively managed by our Global Credit Committee, comprising senior executives, including our Chief Financial Officer, our Chief Risk Officer, our Chief Investment Officer, and our Treasurer. We also have well-established, strict contractual investment rules requiring managers to maintain highly diversified exposures to individual issuers and closely monitor investment manager compliance with portfolio guidelines.

The average duration of our fixed income securities, including the effect of options and swaps, was 4.2 years at both September 30, 2017 and December 31, 2016 . We estimate that a 100 basis point (bps) increase in interest rates would reduce the valuation of our fixed income portfolio by approximately $4.1 billion at September 30, 2017 .

The following table shows the fair value and cost/amortized cost of our invested assets:

																
 	September 30, 2017	 	 	December 31, 2016	 	
(in millions of U.S. dollars)	Fair
Value		 	Cost/
Amortized
Cost		 	Fair
Value		 	Cost/
Amortized
Cost		
Fixed maturities available for sale	$	83,686		 	$	82,254		 	$	80,115		 	$	79,536		
Fixed maturities held to maturity	10,365		 	10,160		 	10,670		 	10,644		
Short-term investments	2,991		 	2,991		 	3,002		 	3,002		
 	97,042		 	95,405		 	93,787		 	93,182		
Equity securities	910		 	723		 	814		 	706		
Other investments	4,677		 	4,429		 	4,519		 	4,270		
Total investments	$	102,629		 	$	100,557		 	$	99,120		 	$	98,158		

The fair value of our total investments increased $3.5 billion during the nine months ended September 30, 2017 , primarily due to the investing of operating cash flows, unrealized appreciation, and the favorable impact of foreign exchange, partially offset

79

Table of Contents

by the payment of dividends on our Common Shares, repurchases of our Common Shares, and the repayment of our $500 million senior notes that matured in February 2017.
The following tables present the market value of our fixed maturities and short-term investments at September 30, 2017 and December 31, 2016 . The first table lists investments according to type and second according to S&P credit rating: 

														
 	September 30, 2017	 	 	December 31, 2016	 	
(in millions of U.S. dollars, except for percentages)	Market
Value		 	% of Total		 	Market
Value		 	% of Total		
Treasury	$	3,607		 	4	%	 	$	2,832		 	3	%	
Agency	596		 	1	%	 	699		 	1	%	
Corporate and asset-backed securities	27,815		 	29	%	 	26,944		 	29	%	
Mortgage-backed securities	16,669		 	17	%	 	15,435		 	16	%	
Municipal	21,621		 	22	%	 	22,768		 	24	%	
Non-U.S.	23,743		 	24	%	 	22,107		 	24	%	
Short-term investments	2,991		 	3	%	 	3,002		 	3	%	
Total	$	97,042		 	100	%	 	$	93,787		 	100	%	
AAA	$	15,411		 	16	%	 	$	15,746		 	17	%	
AA	36,947		 	38	%	 	36,235		 	39	%	
A	18,427		 	19	%	 	17,519		 	19	%	
BBB	12,862		 	13	%	 	12,237		 	13	%	
BB	7,421		 	8	%	 	6,993		 	7	%	
B	5,694		 	6	%	 	4,814		 	5	%	
Other	280		 	—	%	 	243		 	—	%	
Total	$	97,042		 	100	%	 	$	93,787		 	100	%	

Corporate and asset-backed securities
The following table presents our 10 largest global exposures to corporate bonds by market value at September 30, 2017 :  

				
(in millions of U.S. dollars)	Market Value		
Wells Fargo & Co	$	594		
JP Morgan Chase & Co	509		
Anheuser-Busch InBev NV	447		
Goldman Sachs Group Inc	440		
AT&T Inc	408		
General Electric Co	397		
Verizon Communications Inc	372		
Citigroup Inc	345		
Morgan Stanley	343		
Bank of America Corp	331		

80

Table of Contents

Mortgage-backed securities

																												
 	S&P Credit Rating	 	 	Market
 Value		 	Amortized Cost		
September 30, 2017 (in millions of U.S. dollars)	AAA		 	AA		 	A		 	BBB		 	BB and
below		 	Total		 	Total		
Agency residential mortgage-backed (RMBS)	$	—		 	$	13,744		 	$	—		 	$	—		 	$	—		 	$	13,744		 	$	13,691		
Non-agency RMBS	2		 	4		 	58		 	4		 	27		 	95		 	93		
Commercial mortgage-backed	2,817		 	13		 	—		 	—		 	—		 	2,830		 	2,808		
Total mortgage-backed securities	$	2,819		 	$	13,761		 	$	58		 	$	4		 	$	27		 	$	16,669		 	$	16,592		

Municipal
As part of our overall investment strategy, we may invest in states, municipalities, and other political subdivisions fixed maturity securities (Municipal). We apply the same investment selection process described previously to our Municipal investments. The portfolio is highly diversified primarily in state general obligation bonds and essential service revenue bonds including education and utilities (water, power, and sewers).

Non-U.S.
Our exposure to the Euro results primarily from Chubb European Group Limited which is headquartered in London and offers a broad range of coverages throughout the European Union, Central, and Eastern Europe. Chubb primarily invests in Euro denominated investments to support its local currency insurance obligations and required capital levels. Chubb’s local currency investment portfolios have strict contractual investment guidelines requiring managers to maintain a high quality and diversified portfolio to both sector and individual issuers. Investment portfolios are monitored daily to ensure investment manager compliance with portfolio guidelines.

Our non-U.S. investment grade fixed income portfolios are currency-matched with the insurance liabilities of our non-U.S. operations. The average credit quality of our non-U.S. fixed income securities is A and 55 percent of our holdings are rated AAA or guaranteed by governments or quasi-government agencies. Within the context of these investment portfolios, our government and corporate bond holdings are highly diversified across industries and geographies. Issuer limits are based on credit rating (AA— two percent, A— one percent, BBB— 0.5 percent of the total portfolio) and are monitored daily via an internal compliance system. Because of this investment approach, we do not have a direct exposure to troubled sovereign borrowers in Europe. We manage our indirect exposure using the same credit rating based investment approach. Accordingly, we do not believe our indirect exposure is material.
The following table summarizes the market value and amortized cost of our non-U.S. fixed income portfolio by country/sovereign for non-U.S. government securities at September 30, 2017 : 

								
(in millions of U.S. dollars)	Market Value		 	Amortized Cost		
United Kingdom	$	1,494		 	$	1,462		
Republic of Korea	1,045		 	959		
Canada	973		 	987		
Federative Republic of Brazil	848		 	828		
Province of Ontario	675		 	680		
United Mexican States	556		 	555		
Province of Quebec	545		 	544		
Kingdom of Thailand	517		 	486		
Federal Republic of Germany	423		 	414		
French Republic	345		 	323		
Other Non-U.S. Government Securities (1)	4,651		 	4,548		
Total	$	12,072		 	$	11,786		
		
(1)  	There are no investments in Portugal, Ireland, Italy, Greece or Spain.	

81

Table of Contents

The following table summarizes the market value and amortized cost of our non-U.S. fixed income portfolio by country/sovereign for non-U.S. corporate securities at September 30, 2017 : 

								
(in millions of U.S. dollars)	Market Value		 	Amortized Cost		
United Kingdom	$	2,074		 	$	1,988		
Canada	1,474		 	1,457		
United States (1)	958		 	931		
France	837		 	808		
Australia	793		 	778		
Netherlands	728		 	706		
Germany	610		 	593		
Switzerland	357		 	345		
Japan	323		 	321		
China	321		 	316		
Other Non-U.S. Corporate Securities	3,196		 	3,103		
Total	$	11,671		 	$	11,346		
(1) The countries that are listed in the non-U.S. corporate fixed income portfolio above represent the ultimate parent company's country of risk. Non-U.S. corporate securities could be issued by foreign subsidiaries of U.S. corporations.

Below-investment grade corporate fixed income portfolio
Below-investment grade securities have different characteristics than investment grade corporate debt securities. Risk of loss from default by the borrower is greater with below-investment grade securities. Below-investment grade securities are generally unsecured and are often subordinated to other creditors of the issuer. Also, issuers of below-investment grade securities usually have higher levels of debt and are more sensitive to adverse economic conditions, such as recession or increasing interest rates, than investment grade issuers. At September 30, 2017 , our corporate fixed income investment portfolio included below-investment grade and non-rated securities which, in total, comprised approximately 12 percent of our fixed income portfolio. Our below-investment grade and non-rated portfolio includes over 1,100 issuers, with the greatest single exposure being $161 million .

We manage high-yield bonds as a distinct and separate asset class from investment grade bonds. The allocation to high-yield bonds is explicitly set by internal management and is targeted to securities in the upper tier of credit quality (BB/B). Our minimum rating for initial purchase is BB/B. Eight external investment managers are responsible for high-yield security selection and portfolio construction. Our high-yield managers have a conservative approach to credit selection and very low historical default experience. Holdings are highly diversified across industries and generally subject to a 1.5 percent issuer limit as a percentage of high-yield allocation. We monitor position limits daily through an internal compliance system. Derivative and structured securities (e.g., credit default swaps and collateralized loan obligations) are not permitted in the high-yield portfolio.

	
	
Critical Accounting Estimates	
As of September 30, 2017 , there were no material changes to our critical accounting estimates. For a full discussion of our critical accounting estimates, refer to Item 7 in our 2016 Form 10-K.

Reinsurance recoverable on ceded reinsurance

								
 	September 30		 	December 31		
(in millions of U.S. dollars)	2017		 	2016		
Reinsurance recoverable on unpaid losses and loss expenses (1)	$	13,870		 	$	12,708		
Reinsurance recoverable on paid losses and loss expenses   (1)	929		 	869		
Reinsurance recoverable on losses and loss expenses (1)	$	14,799		 	$	13,577		
Reinsurance recoverable on policy benefits (1)	$	193		 	$	182		
		
(1)  	Net of provision for uncollectible reinsurance	

82

Table of Contents

We evaluate the financial condition of our reinsurers and potential reinsurers on a regular basis and also monitor concentrations of credit risk with reinsurers. The provision for uncollectible reinsurance is required principally due to the potential failure of reinsurers to indemnify us, primarily because of disputes under reinsurance contracts and insolvencies. The provision for uncollectible reinsurance is based on a default analysis applied to gross reinsurance recoverables, net of approximately $3.4 billion and $ 3.3 billion of collateral at September 30, 2017 and December 31, 2016 , respectively. The increase in reinsurance recoverable on losses and loss expenses was primarily due to catastrophe losses related to Hurricane Harvey, Hurricane Irma, and Hurricane Maria.

Unpaid losses and loss expenses
As an insurance and reinsurance company, we are required by applicable laws and regulations and GAAP to establish loss and loss expense reserves for the estimated unpaid portion of the ultimate liability for losses and loss expenses under the terms of our policies and agreements with our insured and reinsured customers. With the exception of certain structured settlements, for which the timing and amount of future claim payments are reliably determinable, and certain reserves for unsettled claims that are discounted in statutory filings, our loss reserves are not discounted for the time value of money.

The following table presents a roll-forward of our unpaid losses and loss expenses: 

												
(in millions of U.S. dollars)	Gross
Losses		 	Reinsurance
Recoverable (1)		 	Net
Losses		
Balance at December 31, 2016	$	60,540		 	$	12,708		 	$	47,832		
Losses and loss expenses incurred	18,178		 	3,996		 	14,182		
Losses and loss expenses paid	(15,393	)	 	(3,066	)	 	(12,327	)	
Foreign currency revaluation and other	828		 	232		 	596		
Balance at September 30, 2017	$	64,153		 	$	13,870		 	$	50,283		
		
(1)  	Net of provision for uncollectible reinsurance	

The estimate of the liabilities includes provisions for claims that have been reported but are unpaid at the balance sheet date (case reserves) and for obligations on claims that have been incurred but not reported (IBNR) at the balance sheet date. IBNR may also include provisions to account for the possibility that reported claims may settle for amounts that differ from the established case reserves. Loss reserves also include an estimate of expenses associated with processing and settling unpaid claims (loss expenses). The increase in unpaid losses and loss expenses in 2017 primarily reflects the significant catastrophe events during the third quarter of 2017, principally from hurricanes Harvey, Irma and Maria and the earthquakes in Mexico.

Asbestos and Environmental (A&E)
During the three months ended September 30, 2017 , an internal review was conducted to evaluate the adequacy of environmental liabilities. As a result of the internal review, we increased environmental gross reserves for Brandywine managed operations by $186 million while the net loss reserves increased by $77 million. A&E reserves are included in Corporate. Refer to our 2016 Form 10-K for further information on our A&E exposures.

Fair value measurements
Accounting guidance defines fair value as the price to sell an asset or transfer a liability (an exit price) in an orderly transaction between market participants and establishes a three-level valuation hierarchy based on the reliability of the inputs. The fair value hierarchy gives the highest priority to quoted prices in active markets (Level 1 inputs) and the lowest priority to unobservable data (Level 3 inputs). Level 2 includes inputs, other than quoted prices within Level 1, that are observable for assets or liabilities either directly or indirectly. Refer to Note 4 to the Consolidated Financial Statements for information on our fair value measurements.

83

Table of Contents

	
	
Catastrophe management	
We actively monitor our catastrophe risk accumulation around the world. The table below presents our modeled annual aggregate pre-tax probable maximum loss (PML), net of reinsurance, for 100-year and 250-year return periods for U.S. hurricane and California earthquake at September 30, 2017 and 2016 . The table also presents Chubb’s corresponding share of pre-tax industry PMLs for each of the return periods for U.S. hurricane and California earthquake. For example, according to the model, for the 1-in-100 return period scenario, there is a one percent chance that our losses incurred in any year from U.S. hurricane events could be in excess of $2,859 million (or 5.7 percent of our total shareholders’ equity at September 30, 2017 ). We estimate that at such hypothetical loss levels, Chubb’s share of the aggregate industry PML would be approximately 2.0 percent.

																													
 	 	Modeled Annual Aggregate Net PML	
 	 	U.S. Hurricane	 	California Earthquake	
 	 	September 30	 	 	September 30		 	September 30	 	 	September 30		
 	 	2017	 	 	2016		 	2017	 	 	2016		
(in millions of U.S. dollars, except for percentages)	 	Chubb	 	% of Total
Shareholders’
Equity	 	% of
Industry	 	Chubb	 	Chubb	 	% of Total
Shareholders’
Equity	 	% of
Industry	 	Chubb	
1-in-100	 	$	2,859		 	5.7	%	 	2.0	%	 	$	2,964		 	$	1,463		 	2.9	%	 	3.8	%	 	$	1,475		
1-in-250	 	$	4,872		 	9.7	%	 	2.5	%	 	$	5,049		 	$	1,921		 	3.8	%	 	3.2	%	 	$	1,948		

The above modeled loss information at September 30, 2017 reflects our in-force portfolio at July 1, 2017. The September 30, 2017 modeled loss information reflects the April 1, 2017 reinsurance program (see Natural Catastrophe Property Reinsurance Program section below) as well as inuring reinsurance protection coverages.

The modeling estimates of both Chubb and industry loss levels are inherently uncertain owing to key assumptions. First, while the use of third-party catastrophe modeling packages to simulate potential hurricane and earthquake losses is prevalent within the insurance industry, the models are reliant upon significant meteorology, seismology, and engineering assumptions to estimate hurricane and earthquake losses. In particular, modeled hurricane and earthquake events are not always a representation of actual events and ensuing additional loss potential. Second, there is no universal standard in the preparation of insured data for use in the models and the running of the modeling software. Third, we are reliant upon third-party estimates of industry insured exposures and there is significant variation possible around the relationship between our loss and that of the industry following an event. Fourth, we assume that our reinsurance recoveries following an event are fully collectible. These loss estimates do not represent our potential maximum exposures and it is highly likely that our actual incurred losses would vary materially from the modeled estimates.

	
	
Natural Catastrophe Property Reinsurance Program	
Chubb’s core property catastrophe reinsurance program provides protection against natural catastrophes impacting its primary property operations (i.e., excluding our Global Reinsurance and Life Insurance segments).

We regularly review our reinsurance protection and corresponding property catastrophe exposures. This may or may not lead to the purchase of additional reinsurance prior to a program’s renewal date. In addition, prior to each renewal date, we consider how much, if any, coverage we intend to buy and we may make material changes to the current structure in light of various factors, including modeled PML assessment at various return periods, reinsurance pricing, our risk tolerance and exposures, and various other structuring considerations.

Chubb renewed its Global Property Catastrophe Reinsurance Program for our North American and International operations effective April 1, 2017 through March 31, 2018, with no significant change in coverage from the expiring program. The program consists of three layers in excess of losses retained by Chubb. In addition, Chubb also renewed its terrorism coverage (excluding nuclear, biological, chemical and radiation coverage, with an inclusion of coverage for biological and chemical coverage for personal lines) for the United States from April 1, 2017 through March 31, 2018 with the same limits and retention and percentage placed except that the majority of terrorism coverage is on an aggregate basis above our retentions without a reinstatement.

84

Table of Contents

	
						
Loss Location	 	Layer of Loss	 	Comments	Notes	
United States
(excluding Alaska and Hawaii)	 	$0 million –  
$1.0 billion	 	Losses retained by Chubb	(a)	
United States
(excluding Alaska and Hawaii)	 	$1.0 billion –
$1.25 billion	 	All natural perils and terrorism	(b)	
United States
(excluding Alaska and Hawaii)	 	$1.25 billion –
$2.0 billion	 	All natural perils and terrorism	(c)	
United States
(excluding Alaska and Hawaii)	 	$2.0 billion –
$3.5 billion	 	All natural perils and terrorism	(d)	
International
(including Alaska and Hawaii)	 	$0 million –
$175 million	 	Losses retained by Chubb	(a)	
International
(including Alaska and Hawaii)	 	$175 million –
$925 million	 	All natural perils and terrorism	(c)	
Alaska, Hawaii, and Canada	 	$925 million –
$2.425 billion	 	All natural perils and terrorism	(d)	
(a)  Ultimate retention will depend upon the nature of the loss and the interplay between the underlying per risk programs and certain other catastrophe programs purchased by individual business units. These other catastrophe programs have the potential to reduce our effective retention below the stated levels. For example, we have a treaty in place, effective May 1, 2017, that covers 30 percent of our international catastrophe losses between $100 million and $175 million.  This reinsurance coverage reduced our liability in international commercial and personal property and casualty insurance business related to hurricane Maria to $152 million and is presumed exhausted after hurricane Maria, with no reinstatements available. 	
(b) These coverages are 20 percent placed with Reinsurers.	
(c)  These coverages are both part of the same Second layer within the Global Catastrophe Program and are 100 percent placed with Reinsurers. As such, it may be exhausted in one region and not available in the other.	
(d) These coverages are both part of the same Third layer within the Global Catastrophe Program and are 100 percent placed with Reinsurers. As such, it may be exhausted in one region and not available in the other.	

Chubb also has two series of property catastrophe bonds in place (assumed as part of the Chubb Corp acquisition) that offer additional natural catastrophe protection for certain parts of the portfolio. The geographic scope of this coverage is from Virginia through Maine. The East Lane VI 2014 series currently provides $270 million of coverage as part of a $300 million layer in excess of $2,660 million retention through March 14, 2018. The East Lane VI 2015 series currently provides $250 million of coverage as part of a $408 million layer in excess of $2,014 million retention through March 13, 2020.

	
	
Crop Insurance	
We are, and have been since the 1980s, one of the leading writers of crop insurance in the U.S. and have conducted that business through a managing general agent subsidiary of Rain and Hail. We provide protection throughout the U.S. on a variety of crops and are therefore geographically diversified, which reduces the risk of exposure to a single event or a heavy accumulation of losses in any one region. Our crop insurance business comprises two components – Multiple Peril Crop Insurance (MPCI) and crop-hail insurance.

The MPCI program is offered in conjunction with the U.S. Department of Agriculture (USDA). The policies cover revenue shortfalls or production losses due to natural causes such as drought, excessive moisture, hail, wind, frost, insects, and disease. Generally, policies have deductibles ranging from 10 percent to 50 percent of the insured's risk. The USDA's Risk Management Agency (RMA) sets the policy terms and conditions, rates and forms, and is also responsible for setting compliance standards. As a participating company, we report all details of policies underwritten to the RMA and are party to a Standard Reinsurance Agreement (SRA). The SRA sets out the relationship between private insurance companies and the Federal Crop Insurance Corporation (FCIC) concerning the terms and conditions regarding the risks each will bear including the pro-rata and state stop-loss provisions which allows companies to limit the exposure of any one state or group of states on their underwriting results. In addition to the pro-rata and excess of loss reinsurance protections inherent in the SRA, we also purchase third-party proportional and stop-loss reinsurance for our MPCI business to reduce our exposure. We may also enter into crop derivative contracts to further manage our risk exposure.

Each year the RMA issues a final SRA for the subsequent reinsurance year. In June 2017, the RMA released the 2018 SRA which establishes the terms and conditions for the 2018 reinsurance year (i.e., July 1, 2017 through June 30, 2018) that replaced the 2017 SRA. There were no significant changes in the terms and conditions, and therefore the new SRA does not impact Chubb's outlook on the crop program relative to 2018.

85

Table of Contents

On the MPCI business, we recognize net premiums written as soon as estimable, which is generally when we receive acreage reports from the policyholders on the various crops throughout the U.S. This allows us to best determine the premium associated with the liability that is being planted. The MPCI program has specific timeframes as to when producers must report acreage to us and in certain cases, the reporting occurs after the close of the respective reinsurance year. Once the net premium written has been recorded, the premium is then earned over the growing season for the crops. A majority of the crops that are covered in the program are typically subject to the SRA in effect at the beginning of the year. Given the major crops covered in the program, we typically see a substantial written and earned premium impact in the second and third quarters.

The pricing of MPCI premium is determined using a number of factors including commodity prices and related volatility. For instance, in most states the pricing for the MPCI Revenue Product for corn includes a factor that is based on the average price in February of the Chicago Board of Trade December corn futures. To the extent that the corn commodity prices are higher in February than they were in the previous February, and all other factors are the same, the increase in corn prices will increase the corn premium year over year.

Our crop-hail program is a private offering. Premium is earned on the crop-hail program over the coverage period of the policy. Given the very short nature of the growing season, most crop-hail business is typically written in the second and third quarters with the earned premium also more heavily occurring during this time frame. We use industry data to develop our own rates and forms for the coverage offered. The policy primarily protects farmers against yield reduction caused by hail and/or fire, and related costs such as transit to storage. We offer various deductibles to allow the grower to partially self-insure for a reduced premium cost. We limit our crop-hail exposures through the use of township liability limits and third-party proportional and stop-loss reinsurance on our net retained hail business.

	
	
Liquidity	
We anticipate that positive cash flows from operations (underwriting activities and investment income) should be sufficient to cover cash outflows under most loss scenarios for the near term. In addition to cash from operations, routine sales of investments, and financing arrangements, we have agreements with a third-party bank provider which implemented two international multi-currency notional cash pooling programs to enhance cash management efficiency during periods of short-term timing mismatches between expected inflows and outflows of cash by currency. The programs allow us to optimize investment income by avoiding portfolio disruption. Should the need arise, we generally have access to capital markets and an available letter of credit/revolver facility.  On October 25, 2017, we replaced our $1.5 billion letter of credit/revolver facility that was set to expire in November 2017 with an amended and restated credit facility that provides for up to $1.0 billion of availability, all of which may be used for the issuance of letters of credit and for revolving loans. We have the ability to increase the capacity under our existing credit facility to $2.0 billion under certain conditions, but any such increase would not raise the sub-limit for revolving loans above $1.0 billion.  Our prior facility required that we maintain certain financial covenants, all of which we met at September 30, 2017.  At September 30, 2017, our LOC usage was $236 million.
 
Our access to funds under an existing credit facility is dependent on the ability of the banks that are a party to the facility to meet their funding commitments. Our existing credit facility has a remaining term expiring in October 2022 and requires that we maintain:
 
(i) a minimum consolidated net worth of not less than $34.985 billion; and
(ii) a ratio of consolidated total debt (excluding trust preferred securities and mezzanine capital to the extent not exceeding 15 percent of total capitalization) to total capitalization of not greater than 0.35 to 1.

Should our existing credit provider experience financial difficulty, we may be required to replace credit sources, possibly in a difficult market. If we cannot obtain adequate capital or sources of credit on favorable terms, on a timely basis, or at all, our business, operating results, and financial condition could be adversely affected. To date, we have not experienced difficulty accessing our credit facility.

The payment of dividends or other statutorily permissible distributions from our operating companies are subject to the laws and regulations applicable to each jurisdiction, as well as the need to maintain capital levels adequate to support the insurance and reinsurance operations, including financial strength ratings issued by independent rating agencies. During the nine months ended September 30, 2017 , we were able to meet all of our obligations, including the payments of dividends on our Common Shares, with our net cash flows.

86

Table of Contents

We assess which subsidiaries to draw dividends from based on a number of factors. Considerations such as regulatory and legal restrictions as well as the subsidiary’s financial condition are paramount to the dividend decision. Chubb Limited received dividends of $450 million and $875 million from its Bermuda subsidiaries during the nine months ended September 30, 2017 and 2016, respectively. Chubb Limited received dividends of $5.0 billion from its Bermuda subsidiaries in 2015, of which $2.7 billion were paid in 2015, while the remaining $2.3 billion were paid during the first quarter of 2016. These dividends were used to finance a portion of the Chubb Corp acquisition by making capital contributions to Chubb INA and Chubb Group Holdings, both subsidiaries of Chubb Limited.

The payment of any dividends from CGM or its subsidiaries is subject to applicable U.K. insurance laws and regulations. In addition, the release of funds by Syndicate 2488 to subsidiaries of CGM is subject to regulations promulgated by the Society of Lloyd’s. The U.S. insurance subsidiaries of Chubb INA Holdings Inc. (Chubb INA) may pay dividends, without prior regulatory approval, subject to restrictions set out in state law of the subsidiary’s domicile (or, if applicable, commercial domicile). Chubb INA’s international subsidiaries are also subject to insurance laws and regulations particular to the countries in which the subsidiaries operate. These laws and regulations sometimes include restrictions that limit the amount of dividends payable without prior approval of regulatory insurance authorities. Chubb Limited received no dividends from CGM or Chubb INA during the nine months ended September 30, 2017 and 2016 . Debt issued by Chubb INA is serviced by statutorily permissible distributions by Chubb INA’s insurance subsidiaries to Chubb INA as well as other group resources. Chubb INA received dividends of $1.6 billion and $1.2 billion from its subsidiaries during the nine months ended September 30, 2017 and 2016, respectively.

Chubb INA received $1.0 billion in capital contributions from Chubb Limited and $4.2 billion from Chubb Group Holdings during the nine months ended September 30, 2016. Chubb INA also received $5.1 billion in capital contributions in 2015, of which $2.8 billion were paid in 2015, while the remaining $2.3 billion were paid in 2016. $5.0 billion of these capital contributions were sourced from the dividends from the Bermuda subsidiaries to fund the Chubb Corp acquisition as noted above.

Cash Flows
Our sources of liquidity include cash from operations, routine sales of investments, and financing arrangements. The following is a discussion of our cash flows for the nine months ended September 30, 2017 and 2016 .

Operating cash flows were $3.4 billion in the nine months ended September 30, 2017 , compared to $3.8 billion in the prior year period. The decrease in operating cash flow was due to higher taxes paid of $292 million in 2017, reflecting the timing of required estimated tax payments and balances due on prior years. Additionally, 2016 tax payments were lower, reflecting the benefit from overpayments of taxes in 2015. Higher claims paid in 2017 compared to the prior year also reduced operating cash flow.

Cash used for investing was $1.3 billion in the nine months ended September 30, 2017 , compared to $4.3 billion in the prior year period. The prior year included $14.3 billion for the purchase of Chubb Corp, which was largely funded by sales in our investment portfolio, including net proceeds in short-term investments. Cash used for financing was $1,970 million in the nine months ended September 30, 2017 , compared to $510 million in the prior year period. The current year included $500 million of repayments of long-term debt and $707 million of share repurchases. In addition, dividends paid in the current year were $978 million compared to $851 million in the prior year reflecting our higher outstanding share count following the Chubb Corp acquisition. The dividends paid in January 2016 were based on shareholders of record at December 31, 2015, which was prior to the issuance of 137 million shares in connection with the closing of the Chubb Corp acquisition on January 14, 2016.

Both internal and external forces influence our financial condition, results of operations, and cash flows. Claim settlements, premium levels, and investment returns may be impacted by changing rates of inflation and other economic conditions. In many cases, significant periods of time, ranging up to several years or more, may lapse between the occurrence of an insured loss, the reporting of the loss to us, and the settlement of the liability for that loss.

In the current low interest rate environment, we use repurchase agreements as a low-cost funding alternative. At September 30, 2017 , there were $ 1.4 billion in repurchase agreements outstanding with various maturities over the next 8 months.

87

Table of Contents

	
	
Capital Resources	
Capital resources consist of funds deployed or available to be deployed to support our business operations.

								
 	September 30		 	December 31		
(in millions of U.S. dollars, except for ratios)	2017		 	2016		
Short-term debt	$	1,020		 	$	500		
Long-term debt	11,559		 	12,610		
Total financial debt	12,579		 	13,110		
Trust preferred securities	308		 	308		
Total shareholders’ equity	50,471		 	48,275		
Total capitalization	$	63,358		 	$	61,693		
Ratio of financial debt to total capitalization	19.9	%	 	21.3	%	
Ratio of financial debt plus trust preferred securities to total capitalization	20.4	%	 	21.8	%	

Repurchase agreements are excluded from the table above and are disclosed separately from short-term debt in the Consolidated balance sheets. The repurchase agreements are collateralized borrowings where we maintain the right and ability to redeem the collateral on short notice, unlike short-term debt which comprises the current maturities of our long-term debt instruments.

As part of the Chubb Corp acquisition on January 14, 2016, we assumed Chubb Corp's senior and subordinated debt obligations, totaling $3.3 billion par value (fair valued at $3.8 billion at the acquisition date), which is guaranteed by Chubb Limited. Included in the debt obligations are junior subordinated capital securities of $1.0 billion. Prior to April 15, 2017, these securities carried a fixed interest rate of 6.375 percent. Effective April 15, 2017, these securities bear interest at a rate equal to the three-month LIBOR plus 2.25 percentage points. The current interest rate at the time of this filing on these securities is 3.61 percent. The scheduled maturity date for these securities is April 15, 2037.

In February 2017, Chubb INA Holdings Inc.’s $ 500 million of 5.7 percent senior notes matured and were fully paid. In 2017, we reclassified $300 million of the 5.8 percent senior notes ($ 300 million par value due to mature in March 2018), $ 616 million of the 5.75 percent senior notes ($ 600 million par value due to mature in May 2018), and $ 104 million of the 6.6 percent senior notes ($ 100 million par value due to mature in August 2018) from Long-term debt to Short-term debt in the Consolidated balance sheets.

For the nine months ended September 30, 2017, we repurchased $707 million of Common Shares in a series of open market transactions under the Board of Directors (Board) share repurchase authorization. For the period October 1 through October 31, 2017, we repurchased 25,000 Common Shares for a total of $4 million in a series of open market transactions. At October 31, 2017, $289 million in share repurchase authorization remained through December 31, 2017. At September 30, 2017 , there were 15,625,345 Common Shares in treasury with a weighted average cost of $120.16 per share.

We generally maintain the ability to issue certain classes of debt and equity securities via an unlimited Securities and Exchange Commission (SEC) shelf registration which is renewed every three years. This allows us capital market access for refinancing as well as for unforeseen or opportunistic capital needs. Our current shelf registration on file with the SEC expires in October 2018.

Dividends
We have paid dividends each quarter since we became a public company in 1993. Under Swiss law, dividends must be stated in Swiss francs though dividend payments are made by Chubb in U.S. dollars. Refer to Note 7 to the Consolidated Financial Statements for a discussion of our dividend methodology.

At our May 2017 annual general meeting, our shareholders approved an annual dividend for the following year of up to $2.84 per share, or CHF 2.78 per share, calculated using the USD/CHF exchange rate as published in the Wall Street Journal on May 18, 2017, expected to be paid in four quarterly installments of $0.71 per share after the general meeting by way of a distribution from capital contribution reserves, transferred to free reserves for payment. The Board will determine the record and payment dates at which the annual dividend may be paid until the date of the 2018 annual general meeting, and is authorized to abstain from distributing a dividend at their discretion. The annual dividend approved in May 2017 represented an $0.08 per share increase ($0.02 per quarter) over the prior year dividend.

88

Table of Contents

The following table represents dividends paid per Common Share to shareholders of record on each of the following dates:  

					
Shareholders of record as of:	 	Dividends paid as of:	 	 	
December 30, 2016	 	January 20, 2017	 	$0.69 (CHF 0.69)	
March 31, 2017	 	April 21, 2017	 	$0.69 (CHF 0.69)	
June 30, 2017	 	July 21, 2017	 	$0.71 (CHF 0.69)	
September 29, 2017	 	October 20, 2017	 	$0.71 (CHF 0.68)	

	
	
ITEM 3. Quantitative and Qualitative Disclosures about Market Risk	
Refer to Item 7A included in our 2016 Form 10-K.

Foreign currency management
As a global company, Chubb entities transact business in multiple currencies. Our policy is to generally match assets, liabilities and required capital for each individual jurisdiction in local currency, which would include the use of derivatives. We do not hedge our net asset non-U.S. dollar capital positions; however, we do consider hedging for planned cross border transactions. For an estimated impact of foreign currency movement on our net assets denominated in non-U.S. currencies, refer to Item 7A in our 2016 Form 10-K.  This information will be updated and disclosed in interim filings if our net assets in non-U.S. currencies change materially from the December 31, 2016 balances disclosed in the 2016 Form 10-K.

Reinsurance of GMDB and GLB guarantees
Chubb views its variable annuity reinsurance business as having a similar risk profile to that of catastrophe reinsurance with the probability of long-term economic loss relatively small, at the time of pricing. Adverse changes in market factors and policyholder behavior will have an impact on both life underwriting income and net income. When evaluating these risks, we expect to be compensated for taking both the risk of a cumulative long-term economic net loss, as well as the short-term accounting variations caused by these market movements. Therefore, we evaluate this business in terms of its long-term economic risk and reward.

Net income is directly impacted by changes in benefit reserves calculated in connection with reinsurance of variable annuity guarantees, primarily GMDB and GLB. In addition, net income is directly impacted by changes in the fair value of the GLB liability (FVL), which is classified as a derivative for accounting purposes. The FVL established for a GLB reinsurance contract represents the difference between the fair value of the contract and the benefit reserves. Benefit reserves and FVL calculations are directly affected by market factors, including equity levels, interest rate levels, credit risk, and implied volatilities, as well as policyholder behaviors, such as annuitization and lapse rates.

The tables below are estimates of the sensitivities to instantaneous changes in economic inputs (e.g., equity shock, interest rate shock etc.) or actuarial assumptions at September 30, 2017 of the FVL and of the fair value of specific derivative instruments held (hedge value) to partially offset the risk in the variable annuity guarantee reinsurance portfolio. The following assumptions should be considered when using the below tables:

•	No changes to the benefit ratio used to establish benefit reserves at September 30, 2017	

•	Equity shocks impact all global equity markets equally	
		
•	Our liabilities are sensitive to global equity markets in the following proportions: 75 percent— 85 percent U.S. equity, 10 percent— 20 percent international equity ex-Japan, up to 10 percent Japan equity.	
		
•	Our current hedge portfolio is sensitive to global equity markets in the following proportions: 100 percent U.S. equity.	
		
•	We would suggest using the S&P 500 index as a proxy for U.S. equity, the MSCI EAFE index as a proxy for international equity, and the TOPIX as a proxy for Japan equity.	

•	Interest rate shocks assume a parallel shift in the U.S. yield curve	
		
•	Our liabilities are also sensitive to global interest rates at various points on the yield curve, mainly the U.S. Treasury curve in the following proportions: up to 10 percent short-term rates (maturing in less than 5 years), 20 percent— 30	

89

Table of Contents

percent medium-term rates (maturing between 5 years and 10 years, inclusive), and 60 percent— 70 percent long-term rates (maturing beyond 10 years).
		
•	A change in AA-rated credit spreads (AA-rated credit spreads are a proxy for both our own credit spreads and the credit spreads of the ceding insurers) impacts the rate used to discount cash flows in the fair value model.	

•	The hedge sensitivity is from  September 30, 2017  market levels.	

•	The sensitivities are not directly additive because changes in one factor will affect the sensitivity to changes in other factors. The sensitivities do not scale linearly and may be proportionally greater for larger movements in the market factors. The sensitivities may also vary due to foreign exchange rate fluctuations. The calculation of the FVL is based on internal models that include assumptions regarding future policyholder behavior, including lapse, annuitization, and asset allocation. These assumptions impact both the absolute level of the FVL as well as the sensitivities to changes in market factors shown below. Actual sensitivity of our net income may differ from those disclosed in the tables below due to differences between short-term market movements and management judgment regarding the long-term assumptions implicit in our benefit ratios. Furthermore, the sensitivities below could vary by multiples of the sensitivities in the tables below.	

•	In addition, the tables below do not reflect the expected quarterly run rate of net income generated by the variable annuity guarantee reinsurance portfolio if markets remain unchanged during the period. All else equal, if markets remain unchanged during the period, the Gross FVL will increase, resulting in a realized loss. The realized loss occurs primarily because, during the period, we will collect premium on the full population while only 74 percent of that population has become eligible to annuitize and generate a claim (since approximately 26 percent of policies are not eligible to annuitize until after September 30, 2017 ). This increases the Gross FVL because future premiums are lower by the amount collected in the quarter, and also because future claims are discounted for a shorter period. We refer to this increase in Gross FVL as “timing effect”. The unfavorable impact of timing effect on our Gross FVL in a quarter is not reflected in the sensitivity tables below. For this reason, when using the tables below to estimate the sensitivity of Gross FVL in the fourth quarter to various changes, it is necessary to assume an additional $5 million to $45 million increase in Gross FVL and realized losses. However, the impact to Net income is substantially mitigated because the majority of this realized loss is offset by the positive quarterly run rate of Life underwriting income generated by the variable annuity guarantee reinsurance portfolio if markets remain unchanged during the period. Note that both the timing effect and the quarterly run rate of Life underwriting income change over time as the book ages.	

90

Table of Contents

	
																									
Interest Rate Shock	Worldwide Equity Shock	
(in millions of U.S. dollars)	+10%	 	Flat	 	-10%	 	-20%	 	-30%	 	-40%	
+100 bps	(Increase)/decrease in Gross FVL	$	298		 	$	208		 	$	48		 	$	(183	)	 	$	(469	)	 	$	(809	)	
 	Increase/(decrease) in hedge value	(148	)	 	—		 	148		 	296		 	444		 	592		
 	Increase/(decrease) in net income	$	150		 	$	208		 	$	196		 	$	113		 	$	(25	)	 	$	(217	)	
Flat	(Increase)/decrease in Gross FVL	$	169		 	$	—		 	$	(218	)	 	$	(492	)	 	$	(821	)	 	$	(1,201	)	
 	Increase/(decrease) in hedge value	(148	)	 	—		 	148		 	296		 	444		 	592		
 	Increase/(decrease) in net income	$	21		 	$	—		 	$	(70	)	 	$	(196	)	 	$	(377	)	 	$	(609	)	
-100 bps	(Increase)/decrease in Gross FVL	$	(93	)	 	$	(304	)	 	$	(562	)	 	$	(876	)	 	$	(1,240	)	 	$	(1,645	)	
 	Increase/(decrease) in hedge value	(148	)	 	—		 	148		 	296		 	444		 	592		
 	Increase/(decrease) in net income	$	(241	)	 	$	(304	)	 	$	(414	)	 	$	(580	)	 	$	(796	)	 	$	(1,053	)	
 	 	 	 	 	 	 	 	 	 	 	 	 	
Sensitivities to Other Economic Variables	AA-rated Credit Spreads	 	 Interest Rate Volatility	 	 Equity Volatility	
(in millions of U.S. dollars)	+100 bps		 	-100 bps	 	+2%	 	-2%	 	+2%	 	-2%	
(Increase)/decrease in Gross FVL	$	69		 	$	(79	)	 	$	—		 	$	—		 	$	(10	)	 	$	9		
Increase/(decrease) in hedge value	—		 	—		 	—		 	—		 	—		 	—		
Increase/(decrease) in net income	$	69		 	$	(79	)	 	$	—		 	$	—		 	$	(10	)	 	$	9		
 	 	 	 	 	 	 	 	 	 	 	 	
Sensitivities to Actuarial Assumptions	 	 	 	 	Mortality	
(in millions of U.S. dollars)	 	 	 	 	+20%	 	+10%	 	-10%	 	-20%	
(Increase)/decrease in Gross FVL	 	 	 	 	$	28		 	$	14		 	$	(14	)	 	$	(29	)	
Increase/(decrease) in hedge value	 	 	 	 	—		 	—		 	—		 	—		
Increase/(decrease) in net income	 	 	 	 	$	28		 	$	14		 	$	(14	)	 	$	(29	)	
 	 	 	 	 	 	 	 	 	 	 	 	 	
 	 	 	 	 	 	Lapses	
(in millions of U.S. dollars)	 	 	 	 	+50%	 	+25%	 	-25%	 	-50%	
(Increase)/decrease in Gross FVL	 	 	 	 	$	100		 	$	54		 	$	(60	)	 	$	(128	)	
Increase/(decrease) in hedge value	 	 	 	 	—		 	—		 	—		 	—		
Increase/(decrease) in net income	 	 	 	 	$	100		 	$	54		 	$	(60	)	 	$	(128	)	
 	 	 	 	 	 	 	 	 	 	 	 	 	
 	 	 	 	 	 	Annuitization	
(in millions of U.S. dollars)	 	 	 	 	+50%	 	+25%	 	-25%	 	-50%	
(Increase)/decrease in Gross FVL	 	 	 	 	$	(396	)	 	$	(214	)	 	$	208		 	$	388		
Increase/(decrease) in hedge value	 	 	 	 	—		 	—		 	—		 	—		
Increase/(decrease) in net income	 	 	 	 	$	(396	)	 	$	(214	)	 	$	208		 	$	388		

91

Table of Contents

	
	
ITEM 4. Controls and Procedures	
Chubb’s management, with the participation of Chubb’s Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of Chubb’s disclosure controls and procedures as defined in Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934 as of September 30, 2017. Based upon that evaluation, Chubb’s Chief Executive Officer and Chief Financial Officer concluded that Chubb’s disclosure controls and procedures are effective in allowing information required to be disclosed in reports filed under the Securities and Exchange Act of 1934 to be recorded, processed, summarized, and reported within time periods specified in the rules and forms of the SEC, and that such information is accumulated and communicated to Chubb’s management, including its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.
In 2016, Chubb completed the acquisition of The Chubb Corporation. During the three months ended September 30, 2017, we continued to integrate the information technology environments of the two companies. There were no other changes to Chubb's internal controls over financial reporting during the three months ended September 30, 2017 that have materially affected, or are reasonably likely to materially affect, Chubb's internal controls over financial reporting.
PART II OTHER INFORMATION

	
	
ITEM 1. Legal Proceedings	
The information required with respect to this item is included in Note 6 h) to the Consolidated Financial Statements which is hereby incorporated by reference.

	
ITEM 1A. Risk Factors	
Refer to "Risk Factors" under Item 1A of Part I of our 2016 Form 10-K. There have been no material changes to the risk factors disclosed in Item 1A of Part I of our 2016 Form 10-K.

	
ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds and Issuer Repurchases of Equity Securities	

Issuer’s Repurchases of Equity Securities
The following table provides information with respect to purchases by Chubb of its Common Shares during the three months ended September 30, 2017 :

														
Period	Total
Number of
Shares
Purchased (1)		 	Average Price
Paid per Share		 	Total Number of Shares Purchased as Part of Publicly Announced Plan (2)   		 	Approximate Dollar Value of Shares that May Yet be Purchased Under the Plan (3)    		
July 1 through July 31	486,800		 	$	144.12		 	476,657		 	$	457	 million	
August 1 through August 31	844,268		 	$	144.88		 	833,726		 	$	336	 million	
September 1 through September 30	474,581		 	$	140.98		 	305,000		 	$	293	 million	
Total	1,805,649		 	$	143.65		 	1,615,383		 	 	

(1)  	This column represents open market share repurchases and the surrender to Chubb of Common Shares to satisfy tax withholding obligations in connection with the vesting of restricted stock issued to employees and the exercising of options by employees.	
(2) The aggregate value of shares repurchased in the three months ended September 30, 2017 as part of the publicly announced plan was $ 232 million .
(3) Refer to Note 7 to the Consolidated Financial Statements for more information on the Chubb Limited securities repurchase authorization. For the period October 1, 2017 through October 31, 2017, we repurchased 25,000 Common Shares for a total of $4 million in a series of open market transactions. At October 31, 2017, $289 million in share repurchase authorization remained through December 31, 2017.

92

Table of Contents

	
	
ITEM 6. Exhibits	

											
 	 	 	 	Incorporated by Reference	 	 	
Exhibit
Number	 	Exhibit Description	 	Form	 	Original
Number	 	Date Filed	 	Filed
Herewith	
3.1	 	Articles of Association of the Company, as amended	 	8-K	 	3.1	 	May 20, 2016	 	 	
 	 	 	 	 	 	 	 	 	 	 	
3.2	 	Organizational Regulations of the Company, as amended	 	8-K	 	3.1	 	November 21, 2016	 	 	
 	 	 	 	 	 	 	 	 	 	 	
4.1	 	Articles of Association of the Company, as amended	 	8-K	 	4.1	 	May 20, 2016	 	 	
 	 	 	 	 	 	 	 	 	 	 	
4.2	 	Organizational Regulations of the Company, as amended	 	8-K	 	3.1	 	November 21, 2016	 	 	
 	 	 	 	 	 	 	 	 	 	 	
31.1	 	Certification Pursuant to Section 302 of The Sarbanes-Oxley Act of 2002	 	 	 	 	 	 	 	X	
 	 	 	 	 	 	 	 	 	 	 	
31.2	 	Certification Pursuant to Section 302 of The Sarbanes-Oxley Act of 2002	 	 	 	 	 	 	 	X	
 	 	 	 	 	 	 	 	 	 	 	
32.1	 	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of The Sarbanes-Oxley Act of 2002	 	 	 	 	 	 	 	X	
 	 	 	 	 	 	 	 	 	 	 	
32.2	 	Certification Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of The Sarbanes-Oxley Act of 2002	 	 	 	 	 	 	 	X	
 	 	 	 	 	 	 	 	 	 	 	
101.1	 	The following financial information from Chubb Limited’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017 formatted in XBRL: (i) Consolidated Balance Sheets at September 30, 2017, and December 31, 2016; (ii) Consolidated Statements of Operations and Comprehensive Income for the three and nine months ended September 30, 2017 and 2016; (iii) Consolidated Statements of Shareholders’ Equity for the nine months ended September 30, 2017 and 2016; (iv) Consolidated Statements of Cash Flows for the nine months ended September 30, 2017 and 2016; and (v) Notes to Consolidated Financial Statements	 	 	 	 	 	 	 	X	

93

Table of Contents

	
	
SIGNATURES	

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		
 	CHUBB LIMITED	
 	(Registrant)	
 	 	
November 1, 2017	/s/ Evan G. Greenberg
	
 	Evan G. Greenberg	
 	Chairman, President and Chief Executive Officer	
 	 	
November 1, 2017	/s/ Philip V. Bancroft
	
 	Philip V. Bancroft	
 	Executive Vice President and Chief Financial Officer	

94

Exhibit 31.1
CERTIFICATION PURSUANT TO
SECTION 302 OF
THE SARBANES-OXLEY ACT OF 2002
I, Evan G. Greenberg, certify that:

1)	I have reviewed this quarterly report on Form 10-Q of Chubb Limited;	

2)	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;	

3)	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;	

4)	The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:	
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5)	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):	
(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
Date: November 1, 2017

	
/s/ Evan G. Greenberg	
Evan G. Greenberg	
Chairman, President and Chief Executive Officer	

Exhibit 31.2
CERTIFICATION PURSUANT TO
SECTION 302 OF
THE SARBANES-OXLEY ACT OF 2002
I, Philip V. Bancroft, certify that:

1)	I have reviewed this quarterly report on Form 10-Q of Chubb Limited;	

2)	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;	

3)	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;	

4)	The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:	
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5)	The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s Board of Directors (or persons performing the equivalent functions):	
(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
Date: November 1, 2017

	
/s/ Philip V. Bancroft	
Philip V. Bancroft	
Executive Vice President and Chief Financial Officer	

Exhibit 32.1
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
The undersigned officer of Chubb Limited (the Corporation) hereby certifies that the Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017, fully complies with the applicable reporting requirements of Section 13(a) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a)) and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

		
Dated: November 1, 2017	/s/ Evan G. Greenberg	
 	Evan G. Greenberg	
 	Chairman, President and Chief Executive Officer	

Exhibit 32.2
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
The undersigned officer of Chubb Limited (the Corporation) hereby certifies that the Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017, fully complies with the applicable reporting requirements of Section 13(a) of the Securities Exchange Act of 1934 (15 U.S.C. 78m(a)) and that the information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

		
Dated: November 1, 2017	/s/ Philip V. Bancroft	
 	Philip V. Bancroft	
 	Executive Vice President and Chief Financial Officer