AMPHENOL CORP /DE/, 10-Q filed on 5/1/2026
Quarterly Report
v3.26.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2026
Apr. 28, 2026
Document Information [Line Items]    
Entity Registrant Name AMPHENOL CORPORATION  
Entity Central Index Key 0000820313  
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2026  
Securities Act File Number 1-10879  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 22-2785165  
Entity Address, Address Line One 358 Hall Avenue  
Entity Address, City or Town Wallingford  
Entity Address, State or Province CT  
Entity Address, Postal Zip Code 06492  
City Area Code 203  
Local Phone Number 265-8900  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   1,230,234,445
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Common Class A [Member]    
Document Information [Line Items]    
Title of 12(b) Security Class A Common Stock, $0.001 par value  
Trading Symbol APH  
Security Exchange Name NYSE  
3.125% Senior Notes due June 2032    
Document Information [Line Items]    
Title of 12(b) Security 3.125% Senior Notes due 2032  
Trading Symbol APH32  
Security Exchange Name NYSE  
v3.26.1
CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Current Assets:    
Cash and cash equivalents $ 4,128.0 $ 11,130.6
Short-term investments 455.1 303.6
Total cash, cash equivalents and short-term investments 4,583.1 11,434.2
Accounts receivable, less allowance for doubtful accounts of $94.9 and $99.3, respectively 5,872.9 4,717.1
Inventories 4,086.8 3,424.9
Prepaid expenses and other current assets 840.9 691.0
Total current assets 15,383.7 20,267.2
Property, plant and equipment, less accumulated depreciation of $3,261.4 and $3,096.0, respectively 2,688.6 2,305.6
Goodwill 17,542.9 10,575.4
Other intangible assets, net 5,401.1 2,241.4
Other long-term assets 1,117.5 847.3
Total Assets 42,133.8 36,236.9
Current Liabilities:    
Accounts payable 3,181.5 2,661.9
Accrued salaries, wages and employee benefits 675.5 767.7
Accrued income taxes 656.9 482.9
Accrued dividends 307.4 306.7
Other accrued expenses 2,043.8 1,646.4
Current portion of long-term debt 2,109.6 937.2
Total current liabilities 8,974.7 6,802.8
Long-term debt, less current portion 16,639.3 14,564.8
Accrued pension and postretirement benefit obligations 153.6 138.2
Deferred income taxes 1,270.1 432.9
Other long-term liabilities 1,004.6 788.5
Total Liabilities 28,042.3 22,727.2
Redeemable noncontrolling interests 9.1 9.3
Equity:    
Common stock 1.2 1.2
Additional paid-in capital 4,347.4 4,232.9
Retained earnings 10,432.1 9,854.3
Treasury stock, at cost (310.0) (195.8)
Accumulated other comprehensive loss (493.9) (479.5)
Total stockholders' equity attributable to Amphenol Corporation 13,976.8 13,413.1
Noncontrolling interests 105.6 87.3
Total Equity 14,082.4 13,500.4
Total Liabilities, Redeemable Noncontrolling Interests and Equity $ 42,133.8 $ 36,236.9
v3.26.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
CONDENSED CONSOLIDATED BALANCE SHEETS    
Allowance for doubtful accounts $ 94.9 $ 99.3
Accumulated depreciation $ 3,261.4 $ 3,096.0
v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
CONDENSED CONSOLIDATED STATEMENTS OF INCOME    
Net sales $ 7,620.1 $ 4,811.0
Cost of sales 4,819.9 3,167.0
Gross profit 2,800.2 1,644.0
Acquisition-related expenses 116.9 44.0
Selling, general and administrative expenses 851.5 575.2
Operating income 1,831.8 1,024.8
Interest expense (207.9) (76.5)
Other income (expense), net 21.8 14.6
Income before income taxes 1,645.7 962.9
Provision for income taxes (702.4) (218.7)
Net income 943.3 744.2
Less: Net income attributable to noncontrolling interests (10.3) (6.4)
Net income attributable to Amphenol Corporation $ 933.0 $ 737.8
Net income attributable to Amphenol Corporation per common share - Basic (in dollars per share) $ 0.76 $ 0.61
Weighted average common shares outstanding - Basic (in shares) 1,228.9 1,209.8
Net income attributable to Amphenol Corporation per common share - Diluted (in dollars per share) $ 0.72 $ 0.58
Weighted average common shares outstanding - Diluted (in shares) 1,289.7 1,266.2
v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME    
Net income $ 943.3 $ 744.2
Total other comprehensive (loss) income, net of tax:    
Foreign currency translation adjustments (16.0) 72.1
Reclassification of net unrealized loss on hedging activities to interest expense, net of tax of ($0.3) 1.1  
Pension and postretirement benefit plan adjustment, net of tax of ($0.4) and ($0.3), respectively 1.4 0.8
Total other comprehensive (loss) income, net of tax (13.5) 72.9
Total comprehensive income 929.8 817.1
Less: Comprehensive income attributable to noncontrolling interests (11.2) (7.1)
Comprehensive income attributable to Amphenol Corporation $ 918.6 $ 810.0
v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME    
Unrealized loss on hedging activities, tax $ (0.3)  
Pension and postretirement benefit plan adjustment, tax $ (0.4) $ (0.3)
v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Cash from operating activities:      
Net income $ 943.3 $ 744.2  
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 485.8 236.3  
Stock-based compensation expense 34.2 26.6  
Deferred income tax provision (benefit) 165.6 (13.9)  
Net change in components of working capital (499.8) (271.3)  
Net change in other long-term assets and liabilities (7.6) 43.0  
Net cash provided by operating activities 1,121.5 764.9  
Cash from investing activities:      
Capital expenditures (291.6) (188.6)  
Proceeds from disposals of property, plant and equipment 1.3 4.1  
Purchases of investments (232.6) (3.1)  
Sales and maturities of investments 83.9 7.2  
Acquisitions, net of cash acquired (10,591.8) (2,172.2)  
Other, net 0.0 0.0  
Net cash used in investing activities (11,030.8) (2,352.6)  
Cash from financing activities:      
Proceeds from issuance of senior notes and other long-term debt 3,645.1 0.0  
Repayments of senior notes and other long-term debt (350.7) (400.5)  
Borrowings (repayments) under commercial paper programs, net 0.0 639.8  
Payment of costs related to debt financing (3.4) 0.0  
Purchase of treasury stock (178.0) (180.9)  
Proceeds from exercise of stock options 95.9 53.2  
Dividend payments (306.7) (199.5)  
Other, net (3.9) (0.7)  
Net cash provided by (used in) financing activities 2,898.3 (88.6)  
Effect of exchange rate changes on cash and cash equivalents 8.4 16.5  
Net decrease in cash and cash equivalents (7,002.6) (1,659.8)  
Cash and cash equivalents balance, beginning of period 11,130.6 3,317.0 $ 3,317.0
Cash and cash equivalents balance, end of period 4,128.0 1,657.2 $ 11,130.6
Cash paid for:      
Interest 120.1 51.7  
Income taxes, net $ 347.7 $ 167.9  
v3.26.1
Basis of Presentation and Principles of Consolidation
3 Months Ended
Mar. 31, 2026
Basis of Presentation and Principles of Consolidation  
Basis of Presentation and Principles of Consolidation

Note 1—Basis of Presentation and Principles of Consolidation

The Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025, and each of the related Condensed Consolidated Statements of Income, Condensed Consolidated Statements of Comprehensive Income and Condensed Consolidated Statements of Cash Flow for the three months ended March 31, 2026 and 2025, include the accounts of Amphenol Corporation and its subsidiaries (“Amphenol,” the “Company,” “we,” “our” or “us”). All material intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements included herein are unaudited. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, including normal recurring adjustments considered necessary for a fair presentation of the results, in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The results of operations for the three months ended March 31, 2026 are not necessarily indicative of the results to be expected for the full year. These condensed consolidated financial statements and the related notes should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “2025 Annual Report”).

v3.26.1
New Accounting Pronouncements
3 Months Ended
Mar. 31, 2026
New Accounting Pronouncements  
New Accounting Pronouncements

Note 2—New Accounting Pronouncements

In November 2024, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”). The intent of ASU 2024-03 is to improve financial statement disclosures regarding information about certain costs and expenses. Specifically, ASU 2024-03 requires the disaggregation of significant expenses within the income statement expense line items, including, but not limited to, purchases of inventory, employee compensation, depreciation, intangible asset amortization, and selling expenses, among others, as well as a qualitative description of the remaining amounts not separately disaggregated quantitatively. ASU 2024-03 is effective for annual fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The amendments under ASU 2024-03 should be applied on a prospective basis, although retrospective application is permitted. The Company is currently evaluating the impact of ASU 2024-03 on its consolidated financial statements and disclosures.

In December 2025, the FASB issued ASU No. 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements (“ASU 2025-11”), which clarifies the applicability of the interim reporting guidance, the types of interim reporting, and the form and content of interim financial statements in accordance with U.S. GAAP. The amendment does not intend to change the fundamental nature of interim reporting or expand or reduce current interim disclosure requirements but rather provides clarity and improves navigability of the existing interim reporting requirements. ASU 2025-11 is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027. The amendments under ASU 2025-11 should be applied on a prospective basis, although retrospective application is permitted. The Company is currently evaluating the potential impact of ASU 2025-11 on its interim consolidated financial statements and disclosures.

v3.26.1
Inventories
3 Months Ended
Mar. 31, 2026
Inventories  
Inventories

Note 3—Inventories

Inventories consist of:

March 31, 

December 31, 

 

  ​ ​ ​

2026

  ​ ​ ​

2025

 

Raw materials and supplies

 

$

1,666.7

 

$

1,413.0

Work in process

 

1,203.6

 

960.3

Finished goods

 

1,216.5

 

1,051.6

 

$

4,086.8

 

$

3,424.9

v3.26.1
Debt
3 Months Ended
Mar. 31, 2026
Debt  
Debt

Note 4—Debt

The Company’s debt (net of any unamortized discount) consists of the following:

 

March 31, 2026

December 31, 2025

 

Carrying

Approximate

Carrying

Approximate

 

  ​ ​ ​

Amount

    

Fair Value

    

Amount

    

Fair Value

 

Revolving Credit Facility

$

 

$

 

$

 

$

U.S. Commercial Paper Program

 

 

 

 

 

 

Euro Commercial Paper Program

 

 

 

 

 

 

364-Day Delayed Draw Term Loan

1,534.1

1,534.1

Three-Year Delayed Draw Term Loan

1,534.1

 

 

1,534.1

 

 

 

4.750% Senior Notes due March 2026

 

 

 

 

349.9

 

350.8

0.750% Euro Senior Notes due May 2026

576.9

 

 

575.5

 

 

586.5

 

584.2

5.050% Senior Notes due April 2027

700.9

 

 

705.4

 

 

701.2

 

709.8

Floating Rate Senior Notes due November 2027

500.0

499.8

500.0

501.0

3.800% Senior Notes due November 2027

749.6

746.0

749.5

749.5

4.375% Senior Notes due June 2028

749.5

752.1

749.5

757.5

2.000% Euro Senior Notes due October 2028

576.1

 

 

559.4

 

 

585.8

 

578.2

3.900% Senior Notes due November 2028

749.3

744.2

749.2

747.7

5.050% Senior Notes due April 2029

449.7

 

 

459.4

 

 

449.7

 

463.0

4.350% Senior Notes due June 2029

499.9

 

 

501.2

 

 

499.8

 

502.4

2.800% Senior Notes due February 2030

899.7

 

 

848.0

 

 

899.7

 

853.9

4.125% Senior Notes due November 2030

999.0

986.0

999.0

993.8

3.625% Euro Senior Notes due March 2031

575.9

577.7

2.200% Senior Notes due September 2031

748.5

 

 

665.3

 

 

748.4

 

669.4

3.125% Euro Senior Notes due June 2032

687.6

671.7

699.1

697.2

4.400% Senior Notes due February 2033

1,248.6

1,221.0

1,248.5

1,236.4

5.250% Senior Notes due April 2034

599.5

 

 

613.1

 

 

599.5

 

623.0

5.000% Senior Notes due January 2035

746.8

749.2

746.7

762.9

4.625% Senior Notes due February 2036

1,598.4

1,547.4

1,598.3

1,569.1

5.375% Senior Notes due November 2054

492.5

 

 

477.9

 

 

492.5

 

485.8

5.300% Senior Notes due November 2055

1,647.3

1,549.7

1,647.3

1,575.4

Other debt

 

1.4

 

 

1.4

 

 

1.8

 

1.8

Less: unamortized deferred debt issuance costs

 

(116.4)

 

 

 

 

(99.9)

 

Total debt

 

18,748.9

 

 

18,519.6

 

 

15,502.0

 

15,412.8

Less: current portion

 

2,109.6

 

2,110.5

 

 

937.2

 

935.8

Total long-term debt

$

16,639.3

 

$

16,409.1

 

$

14,564.8

$

14,477.0

Revolving Credit Facility

The Company has an amended and restated $3,000.0 unsecured revolving credit facility (the “Revolving Credit Facility”). The Revolving Credit Facility matures in March 2029 and gives the Company and certain of its subsidiaries the ability to borrow, in various currencies, at a spread that varies, based on the Company’s debt rating, over certain currency-specific benchmark rates, which benchmark rates, in the case of U.S. dollar borrowings, are either the base rate or the adjusted term Secured Overnight Financing Rate (“SOFR”). The Company may utilize the Revolving Credit Facility for general corporate purposes. As of March 31, 2026 and December 31, 2025, there were no outstanding borrowings under the Revolving Credit Facility. The carrying value of any borrowings under the Revolving Credit Facility would approximate their fair value, primarily due to their market interest rates, and would be classified as Level 2 in the fair value hierarchy (Note 5). Any outstanding borrowings under the Revolving Credit Facility are classified as long-term debt in the accompanying Condensed Consolidated Balance Sheets. The Revolving Credit Facility requires payment of certain annual agency and commitment fees and requires that the Company satisfy certain financial covenants. On March 31, 2026, the Company was in compliance with the financial covenants under the Revolving Credit Facility.

Commercial Paper Programs

The Company has a commercial paper program (the “U.S. Commercial Paper Program”) pursuant to which the Company may issue short-term unsecured commercial paper notes (the “USCP Notes” or “U.S. Commercial Paper”) in one or more private placements in the United States. The maturities of the USCP Notes vary but may not exceed 397 days from the date of issue. The USCP Notes are sold under customary terms in the commercial paper market and may be issued at par or a discount therefrom, and bear varying interest rates on a fixed or floating basis. As of March 31, 2026, the maximum aggregate principal amount outstanding of USCP Notes at any time is $3,000.0. The Company utilizes borrowings under the U.S. Commercial Paper Program for general corporate purposes, which, in recent years, have included fully or partially funding acquisitions, as well as repaying certain outstanding senior notes. The Company borrowed under the U.S. Commercial Paper Program throughout much of the first quarter of 2026, the proceeds of which were used for general corporate purposes. Before the end of the first quarter of 2026, the Company repaid all of its USCP Notes outstanding using cash on hand. As of March 31, 2026 and December 31, 2025, there were no USCP Notes outstanding.

The Company and one of its wholly owned European subsidiaries (the “Euro Issuer”) also have a commercial paper program (the “Euro Commercial Paper Program” and, together with the U.S. Commercial Paper Program, the “Commercial Paper Programs”), pursuant to which the Euro Issuer may issue short-term unsecured commercial paper notes (the “ECP Notes” and, together with the USCP Notes, the “Commercial Paper”), which are guaranteed by the Company and are to be issued outside of the United States.  The maturities of the ECP Notes will vary but may not exceed 183 days from the date of issue.  The ECP Notes are sold under customary terms in the commercial paper market and may be issued at par or a discount therefrom or a premium thereto and bear varying interest rates on a fixed or floating basis. The ECP Notes may be issued in Euros, Sterling, U.S. dollars or other currencies. The maximum aggregate principal amount outstanding of ECP Notes at any time is $2,000.0. The Company utilizes borrowings under the Euro Commercial Paper Program for general corporate purposes, which may include, for example, fully or partially funding acquisitions. The Company did not borrow under the Euro Commercial Paper Program during the first quarter of 2026, and, as of March 31, 2026 and December 31, 2025, there were no ECP Notes outstanding.

Amounts available under the Commercial Paper Programs may be borrowed, repaid and re-borrowed from time to time. In conjunction with the Revolving Credit Facility, as of March 31, 2026, the authorization from our Board of Directors (the “Board”) limits the maximum aggregate principal amount outstanding of USCP Notes, ECP Notes, and any other commercial paper or similar programs, along with outstanding amounts under the Revolving Credit Facility, at any time to $3,000.0 in the aggregate. The Commercial Paper Programs are rated A-2 by Standard & Poor’s and P-2 by Moody’s and, based on the Board’s authorization described above, are currently backstopped by the Revolving Credit Facility, as amounts undrawn under the Revolving Credit Facility are available to repay Commercial Paper, if necessary. Net proceeds of the issuances of Commercial Paper are expected to be used for general corporate purposes. Any outstanding Commercial Paper is classified as long-term debt in the accompanying Condensed Consolidated Balance Sheets since the Company has the intent and ability to refinance the Commercial Paper on a long-term basis using the Company’s Revolving Credit Facility. The carrying value of Commercial Paper approximates its fair value, primarily due to its market interest rates, and is classified as Level 2 in the fair value hierarchy (Note 5). 

Delayed Draw Term Loans

On August 22, 2025, the Company entered into (i) a three-year, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions, and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “Three-Year Delayed Draw Term Loan”), which is scheduled to mature on the three-year anniversary of the funding date, and (ii) a 364-day, $2,000.0 unsecured delayed draw term loan credit agreement among the Company, certain subsidiaries of the Company, a syndicate of financial institutions and JPMorgan Chase Bank, N.A., acting as the administrative agent (the “364-Day Delayed Draw Term Loan” and, together with the Three-Year Delayed Draw Term Loan, the “Delayed Draw Term Loans,” and individually, a “Delayed Draw Term Loan”), which is scheduled to mature on the date that is 364 days after the funding date. Each Delayed Draw Term Loan may only be drawn in a single drawing over the life of the applicable facility. Each Delayed Draw Term Loan may be repaid at any time without premium or penalty and, once repaid, cannot be reborrowed. Interest rates under each Delayed Draw Term Loan are based on a spread over either the base rate or the adjusted term SOFR, which spread varies based on the Company’s debt rating. The carrying value of any borrowings under each Delayed Draw Term Loan approximates their fair value, primarily due to their market interest rates, and are classified as Level 2 in the fair value hierarchy (Note 5). On November 13, 2025, the aggregate commitment amount in respect of each of the Delayed Draw Term Loans was individually reduced to $1,534.1, and as of December 31, 2025, the Company had not yet drawn upon either Delayed Draw Term Loan. On January 9, 2026, the Company drew the full $1,534.1 available under each of the Delayed Draw Term Loans to fund a portion of the consideration for the acquisition of CommScope’s Connectivity and Cable Solutions Business (“CommScope”), which closed on January 9, 2026, as discussed further in Note 11 herein. In accordance with the credit agreements, the borrowings under the 364-Day Delayed Draw Term Loan and the Three-Year Delayed Draw Term Loan will mature on January 8, 2027 and January 9, 2029, respectively. Interest rates on each Delayed Draw Term Loan were based on a spread over the adjusted term SOFR based on the Company’s debt rating, and as of March 31, 2026, the effective interest rates were approximately 4.42% and 4.54% for the 364-Day Delayed Draw Term Loan and the Three-Year Delayed Draw Term Loan, respectively. The Delayed Draw Term Loans required payment of certain commitment fees prior to the funding thereunder and require that the Company satisfy certain financial covenants, which financial covenants are the same as those under the Revolving Credit Facility. On March 31, 2026, the Company was in compliance with the financial covenants under each Delayed Draw Term Loan.

U.S. Senior Notes

On March 30, 2026, the Company used cash on hand to repay the $350.0 aggregate principal amount of unsecured 4.750% Senior Notes due March 30, 2026 upon maturity.

On March 3, 2025, the Company used a combination of cash on hand and borrowings under the U.S. Commercial Paper Program to repay the $400.0 aggregate principal amount of unsecured 2.050% Senior Notes due March 1, 2025 upon maturity.

On June 12, 2025, the Company issued $750.0 aggregate principal amount of unsecured 4.375% Senior Notes due June 12, 2028 (the “2028 Senior Notes”). Interest on the 2028 Senior Notes is payable semiannually on June 12 and December 12 of each year, which commenced on December 12, 2025. The Company used net proceeds from the 2028 Senior Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

On November 10, 2025, the Company issued (i) $500.0 aggregate principal amount of unsecured Floating Rate Senior Notes due November 15, 2027 (the “Floating Rate Senior Notes”), (ii) $750.0 aggregate principal amount of unsecured 3.800% Senior Notes due November 15, 2027 (the “3.800% Senior Notes”), (iii) $750.0 aggregate principal amount of unsecured 3.900% Senior Notes due November 15, 2028 (the “3.900% Senior Notes”), (iv) $1,000.0 aggregate principal amount of unsecured 4.125% Senior Notes due November 15, 2030 (the “4.125% Senior Notes”), (v) $1,250.0 aggregate principal amount of unsecured 4.400% Senior Notes due February 15, 2033 (the “4.400% Senior Notes”), (vi) $1,600.0 aggregate principal amount of unsecured 4.625% Senior Notes due February 15, 2036 (the “4.625% Senior Notes”) and (vii) $1,650.0 aggregate principal amount of unsecured 5.300% Senior Notes due November 15, 2055 (the “5.300% Senior Notes” and, together with the Floating Rate Senior Notes, the 3.800% Senior Notes, the 3.900% Senior Notes, the 4.125% Senior Notes, the 4.400% Senior Notes and the 4.625% Senior Notes, the “November Senior Notes”).

The Floating Rate Senior Notes bear interest at a floating rate per annum, reset quarterly, equal to Compounded SOFR, plus 0.53%. Interest on the Floating Rate Senior Notes is payable quarterly in arrears on February 15, May 15, August 15 and November 15 of each year, which commenced on February 15, 2026. Interest on the 3.800% Senior Notes, 3.900% Senior Notes, 4.125% Senior Notes and 5.300% Senior Notes is payable semiannually on May 15 and November 15 of each year, commencing on May 15, 2026. Interest on the 4.400% Senior Notes and 4.625% Senior Notes is payable semiannually on February 15 and August 15 of each year, which commenced on February 15, 2026.

On January 9, 2026, the Company used the net proceeds from the November Senior Notes, together with borrowings under the Delayed Draw Term Loans and cash on hand, to fund the cash consideration for the CommScope acquisition, along with fees and expenses related thereto, as discussed further in Note 11 herein.

All of the Company’s outstanding senior notes in the United States (the “U.S. Senior Notes”) are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes. Interest on each series of U.S. Senior Notes is payable semiannually, except for the Floating Rate Senior Notes for which interest is payable quarterly. The Company may, at its option, redeem some or all of any series of U.S. Senior Notes at any time, subject to certain terms and conditions, which include paying 100% of the principal amount, plus accrued and unpaid interest, if any, to, but not including, the date of redemption, and, with certain exceptions, a make-whole premium, except that the Company may not redeem the Floating Rate Senior Notes at its option prior to their maturity.

Euro Senior Notes

On March 30, 2026, the Euro Issuer issued €500.0 (approximately $586.7 at date of issuance) aggregate principal amount of unsecured 3.625% Senior Notes due March 30, 2031 (the “2031 Euro Notes”). The 2031 Euro Notes are unsecured and rank equally in right of payment with all of the Euro Issuer’s other unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes and the 2032 Euro Notes (each as defined below). Interest on the 2031 Euro Notes is payable annually on March 30 of each year, commencing on March 30, 2027. The Company intends to use the proceeds to repay the 0.750% Euro Senior Notes due May 4, 2026 at maturity and for general corporate purposes.

On June 16, 2025, the Company issued €600.0 (approximately $685.9 at date of issuance) aggregate principal amount of unsecured 3.125% Senior Notes due June 16, 2032 (the “2032 Euro Notes”). The 2032 Euro Notes are unsecured and rank equally in right of payment with all of the Company’s other senior unsecured and unsubordinated indebtedness, including the Company’s guarantee of the Euro Issuer’s obligations under the Existing Euro Notes (defined below) and the 2031 Euro Notes. Interest on the 2032 Euro Notes is payable annually on June 16 of each year, commencing on June 16, 2026. The Company used net proceeds from the 2032 Euro Notes to repay borrowings under the U.S. Commercial Paper Program and for general corporate purposes.

The Euro Issuer has two additional outstanding unsecured senior notes issued in Europe (the “Existing Euro Notes” together with the 2031 Euro Notes and the 2032 Euro Notes, the “Euro Notes” and, the Euro Notes together with the U.S. Senior Notes, the “Senior Notes”), each of which was issued with an aggregate principal amount of €500.0. The 0.750% Euro Senior Notes, which were issued in May 2020, mature on May 4, 2026, while the 2.000% Euro Senior Notes, which were issued in October 2018, mature on October 8, 2028. The Existing Euro Notes are unsecured and rank equally in right of payment with all of the Euro Issuer’s senior unsecured and unsubordinated indebtedness and are fully and unconditionally guaranteed on a senior unsecured basis by the Company. Interest on each series of Existing Euro Notes is payable annually. The Company may, at its option, redeem some or all of either series of Existing Euro Notes at any time, subject to certain terms and conditions, which include paying 100% of the principal amount, plus accrued and unpaid interest, if any, to, but not including, the date of redemption, and, with certain exceptions, a make-whole premium.

The fair value of each series of Senior Notes is based on recent bid prices in an active market and is therefore classified as Level 1 in the fair value hierarchy (Note 5). The Senior Notes impose certain obligations on the Company and prohibit various actions by the Company unless it satisfies certain financial requirements.

v3.26.1
Fair Value Measurements
3 Months Ended
Mar. 31, 2026
Fair Value Measurements  
Fair Value Measurements

Note 5—Fair Value Measurements

Fair value is determined based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. These requirements establish market or observable inputs as the preferred source of values. Assumptions based on hypothetical transactions are used in the absence of market inputs. The Company does not have any non-financial instruments accounted for at fair value on a recurring basis.

The valuation techniques required are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs create the following fair value hierarchy:

Level 1           Quoted prices for identical instruments in active markets.

Level 2           Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

Level 3           Significant inputs to the valuation model are unobservable.

The Company believes that the assets and liabilities currently subject to such standards with fair value disclosure requirements are primarily (i) debt instruments, (ii) pension plan assets, and (iii) assets acquired and liabilities and noncontrolling interests assumed as part of acquisition accounting, which are discussed in Note 4, Note 10 and Note 11, respectively, herein, in addition to the Notes to Consolidated Financial Statements in the 2025 Annual Report, along with short- and long-term investments and derivative instruments, discussed below. Substantially all of the Company’s short- and long-term investments consist of certificates of deposit, which are considered as Level 2 in the fair value hierarchy. Long-term investments are recorded in Other long-term assets in the accompanying Condensed Consolidated Balance Sheets. The carrying amounts of these short- and long-term instruments, the vast majority of which are in non-U.S. bank accounts, approximate their respective fair values. The Company’s derivative instruments primarily consist of foreign exchange forward contracts, which are valued using bank quotations based on market observable inputs, such as forward and spot rates, and are therefore classified as Level 2 in the fair value hierarchy. The impact of the credit risk related to these derivative financial assets is immaterial.

The Company reviews the fair value hierarchy classifications on a quarterly basis and determines the appropriate classification of such assets and liabilities subject to the fair value hierarchy standards based on, among other things, the ability to observe valuation inputs. The fair values of the Company’s financial and non-financial assets and liabilities subject to such standards as of March 31, 2026 and December 31, 2025 are as follows:

Fair Value Measurements

Quoted Prices in

Significant

Significant

Active Markets

Observable

Unobservable

for Identical

Inputs

Inputs

Total

Assets (Level 1)

(Level 2)

(Level 3)

March 31, 2026:

Short-term investments

$

455.1

$

$

455.1

$

Long-term investments

0.4

0.4

Forward contracts

(12.5)

(12.5)

Redeemable noncontrolling interests

(9.1)

(9.1)

Total

$

433.9

$

$

443.0

$

(9.1)

December 31, 2025:

Short-term investments

$

303.6

$

$

303.6

$

Long-term investments

0.2

0.2

Forward contracts

0.3

0.3

Redeemable noncontrolling interests

(9.3)

(9.3)

Total

$

294.8

$

$

304.1

$

(9.3)

The Company utilizes foreign exchange forward contracts, some of which are designated as hedging instruments accounted for as cash flow hedges, in the management of foreign currency exposures. In addition, the Company also enters into foreign exchange forward contracts, which are accounted for as net investment hedges, to hedge our exposure to variability in the U.S. dollar equivalent of the net investments in certain foreign subsidiaries. As of March 31, 2026, the fair value of such foreign exchange forward contracts in the table above consisted of (i) various outstanding foreign exchange forward contracts accounted for as net investment hedges and (ii) various outstanding foreign exchange forward contracts that are not designated as hedging instruments. As of December 31, 2025, the Company had no outstanding foreign exchange forward contracts accounted for as either net investment hedges or cash flow hedges. However, in June 2025, the Company issued the 2032 Euro Notes as discussed in Note 4, which have been designated as a hedge of the Company’s net investment in certain foreign subsidiaries. The effect of translating the 2032 Euro Notes into U.S. Dollars is recorded in Accumulated other comprehensive income (loss) and remains there until the underlying net investment is sold or substantially liquidated. We assessed the effectiveness of the net investment hedges at the inception of the hedging relationship and will assess quarterly thereafter. As of March 31, 2026, the net investment hedges were assessed and deemed to be effective.

During the three months ended March 31, 2026 and 2025, the amounts recognized in Accumulated other comprehensive income (loss) associated with foreign exchange forward contracts, as well as the amounts reclassified from Accumulated other comprehensive income (loss) to foreign exchange gain (loss), included in Cost of sales in the accompanying Condensed Consolidated Statements of Income, were not material.

In August 2025, the Company entered into $1,500.0 10-year and $1,000.0 30-year notional treasury lock derivative instruments to hedge interest rate risk prior to the issuance of the November Senior Notes, as discussed in Note 4 herein. Both treasury locks were designated as cash flow hedges. The treasury locks were settled in the fourth quarter of 2025 upon the issuance of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively, for a cumulative loss of $88.0 ($67.4 after-tax). The cumulative after-tax loss was recorded in Accumulated other comprehensive income (loss) and is being amortized to Interest expense over the terms of the 4.625% Senior Notes and the 5.300% Senior Notes, respectively.

The fair values of the Company’s forward contracts are recorded within Prepaid expenses and other current assets, Other long-term assets, Other accrued expenses and Other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets, depending on their value and remaining contractual period.

Certain acquisitions may result in noncontrolling interest holders who, in certain cases, are entitled to a put option, giving them the ability to put some or all of their redeemable interest in the shares of the acquiree to the Company. Specifically, if exercised by the noncontrolling interest holder, Amphenol would be required to purchase some or all of the option holder’s redeemable interest, at a redemption price during specified time period(s) stipulated in the respective acquisition agreement. The redeemable noncontrolling interests recorded on the accompanying Condensed Consolidated Balance Sheets relate to recent acquisitions, which, based on the terms of the respective acquisition agreements, will remain in temporary equity until the applicable put option is either fully exercised or expires. When noncontrolling option holders exercise their put options, the Company is required to acquire their entire redeemable noncontrolling interests, or portions thereof, then outstanding. The redemption value of the redeemable noncontrolling interests is generally calculated using Level 3 unobservable inputs based on a multiple of earnings, which, for the redeemable noncontrolling interests currently outstanding, approximate fair value. As such, the redemption value is classified as Level 3 in the fair value hierarchy and is recorded as Redeemable noncontrolling interests on the Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025. Refer to Note 7 herein for a rollforward of the Redeemable noncontrolling interests for the three months ended March 31, 2026 and 2025.

With the exception of the fair value of the assets acquired and liabilities assumed in connection with acquisition accounting, the Company does not have any other significant financial or non-financial assets and liabilities that are measured at fair value on a non-recurring basis.

v3.26.1
Income Taxes
3 Months Ended
Mar. 31, 2026
Income Taxes  
Income Taxes

Note 6—Income Taxes

Three Months Ended

March 31, 

2026

2025

Provision for income taxes

$

(702.4)

$

(218.7)

Effective tax rate

 

42.7

%  

 

22.7

%

For the three months ended March 31, 2026 and 2025, stock option exercise activity had the impact of decreasing our Provision for income taxes by $50.9 and $20.1, respectively, and decreasing our effective tax rate by approximately 310 basis points and 210 basis points, respectively, due to the recognition of excess tax benefits within Provision for income taxes in the accompanying Condensed Consolidated Statements of Income. Acquisition-related expenses, as discussed in further detail in Note 11 herein, had the aggregate impact of increasing our effective tax rate by approximately 120 basis points and 30 basis points for the three months ended March 31, 2026 and 2025, respectively. In addition, for the three months ended March 31, 2026, the Company recorded an accrual of $130.0 resulting from unfavorable determinations received from relevant tax authorities in China regarding the previously disclosed tax inquiries into certain of the Company’s prior period tax positions, as well as $160.0 in additional tax obligations related to China resulting from the Company’s reassessment of certain tax rate assumptions applied to prior years’ results not subject to the tax inquiries as further discussed below. These accruals had the effect of increasing our effective tax rate by approximately 1,760 basis points.

The Company operates in the U.S. and numerous foreign taxable jurisdictions, and at any point in time has numerous audits underway at various stages of completion. With few exceptions, the Company is subject to income tax examinations by tax authorities for the years 2017 and after. The Company is generally not able to precisely estimate the ultimate settlement amounts or timing until the close of an audit. The Company evaluates its tax positions and establishes liabilities for uncertain tax positions that may be challenged by tax authorities and may not be fully sustained, despite the Company’s belief that the underlying tax positions are fully supportable. As of March 31, 2026, the amount of unrecognized tax benefits, including penalties and interest, which if recognized would impact the effective tax rate, was approximately $571.5. Unrecognized tax benefits are reviewed on an ongoing basis and are adjusted for changing facts and circumstances, including the progress of tax audits and the closing of statutes of limitations. Based on information currently available, management anticipates that over the next 12-month period, audit activity could be completed and statutes of limitations may close relating to existing unrecognized tax benefits of approximately $239.5.

In connection with the previously disclosed tax matter in China, the Company received unfavorable determinations from the relevant tax authorities regarding certain of the Company’s prior period tax positions. As a result of these unfavorable determinations, the Company received tax payment notices totaling $230.0. To fully accrue for this amount, the Company recorded an accrual of $130.0 during the three months ended March 31, 2026, which was in addition to the accrual of $100.0 recorded in the three months ended December 31, 2025. In addition, the recent developments of the China tax matter also resulted in the Company reassessing certain tax rate assumptions applied to prior years’ results not subject to the China tax inquiries. This reassessment resulted in the Company recording $160.0 of additional tax obligations in the three months ended March 31, 2026.

Inflation Reduction Act of 2022

On August 16, 2022, the Inflation Reduction Act of 2022 (the “IRA”), a tax and spending package that introduced several tax-related provisions, including a 15% corporate alternative minimum tax (“CAMT”) on certain large corporations and a 1% excise tax on certain corporate stock repurchases, was enacted into law. Companies were required to reassess their valuation allowances for certain affected deferred tax assets in the period of enactment but did not need to remeasure deferred tax balances for the related tax accounting implications of the CAMT. The IRA provisions, which became effective for Amphenol beginning on January 1, 2023, did not have a material impact on the Company during the three months ended March 31, 2026 and 2025. While the full impact of these provisions in the future depends on several factors, including interpretive regulatory guidance, which has not yet been released, the Company does not currently believe that the provisions of the IRA, including several other non-tax related provisions, will have a material impact on its financial condition, results of operations, liquidity and cash flows.

H.R. 1

On July 4, 2025, the United States federal government enacted the tax and spending bill H.R. 1. This legislation contains changes to previously enacted provisions of the Internal Revenue Code and provides for extensions of certain expiring tax provisions included in the Tax Cuts and Jobs Act. Certain corporate tax provisions in H.R. 1 were enacted with retroactive effect to January 1, 2025. H.R. 1 did not have a material impact on our effective tax rate for the three months ended March 31, 2026. The Company continues to evaluate the corporate tax provisions contained within H.R. 1, and the future impact of H.R. 1 depends on several factors, including interpretive regulatory guidance, which has not yet been released.

v3.26.1
Stockholders' Equity and Noncontrolling Interests
3 Months Ended
Mar. 31, 2026
Stockholders' Equity and Noncontrolling Interests  
Stockholders' Equity and Noncontrolling Interests

Note 7—Stockholders’ Equity and Noncontrolling Interests

Net income attributable to noncontrolling interests is classified below net income. Earnings per share is determined after the impact of the noncontrolling interests’ share in net income of the Company. In addition, the equity attributable to noncontrolling interests is presented as a separate caption within equity.

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2026 is as follows:

  ​

Stockholders’ equity attributable to Amphenol Corporation

 

  ​

Accumulated

Redeemable

  ​

Common Stock

Treasury Stock

Additional

Other

Non-

Non-

  ​

Shares

Shares

Paid-In

Retained

Comprehensive

controlling

Total

controlling

  ​

(in millions)

  ​ ​

Amount

  ​ ​

(in millions)

  ​ ​

Amount

  ​ ​

Capital

  ​ ​

Earnings

  ​ ​

Loss

  ​ ​

Interests

  ​ ​

Equity

  ​ ​

Interests

  ​

Balance as of December 31, 2025

  ​

1,228.9

 

$

1.2

 

(2.4)

 

$

(195.8)

 

$

4,232.9

 

$

9,854.3

 

$

(479.5)

 

$

87.3

 

$

13,500.4

 

$

9.3

Net income

  ​

 

933.0

 

10.3

 

943.3

Other comprehensive income (loss)

  ​

 

(14.4)

 

1.1

 

(13.3)

(0.2)

Acquisitions resulting in noncontrolling interests

  ​

 

6.9

 

6.9

Purchase of treasury stock

  ​

(1.3)

 

(178.0)

 

(178.0)

Retirement of treasury stock

  ​

 

 

 

Stock options exercised

  ​

3.3

0.8

63.8

 

80.3

(47.8)

 

96.3

Dividends declared ($0.25 per common share)

  ​

 

(307.4)

 

(307.4)

Stock-based compensation expense

  ​

 

34.2

 

34.2

Balance as of March 31, 2026

  ​

1,232.2

 

$

1.2

 

(2.9)

 

$

(310.0)

 

$

4,347.4

 

$

10,432.1

 

$

(493.9)

 

$

105.6

 

$

14,082.4

 

$

9.1

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2025 is as follows:

  ​

Stockholders’ equity attributable to Amphenol Corporation

  ​

Accumulated

Redeemable

  ​

Common Stock

Treasury Stock

Additional

Other

Non-

Non-

  ​

Shares

Shares

Paid-In

Retained

Comprehensive

controlling

Total

controlling

  ​

(in millions)

  ​ ​

Amount

  ​ ​

(in millions)

  ​ ​

Amount

  ​ ​

Capital

  ​ ​

Earnings

  ​ ​

Loss

  ​ ​

Interests

  ​ ​

Equity

  ​ ​

Interests

  ​

Balance as of December 31, 2024

  ​

1,212.9

 

$

1.2

 

(3.6)

 

$

(199.7)

 

$

3,601.8

 

$

7,105.0

 

$

(716.3)

 

$

55.4

 

$

9,847.4

 

$

8.7

Net income

  ​

 

737.8

 

6.1

 

743.9

0.3

Other comprehensive income (loss)

  ​

 

72.2

0.4

 

72.6

0.3

Purchase of treasury stock

  ​

(2.7)

 

(180.9)

 

(180.9)

Retirement of treasury stock

  ​

(2.7)

2.7

 

180.9

 

(180.9)

 

Stock options exercised

  ​

2.2

0.5

25.7

 

43.8

(16.4)

 

53.1

Dividends declared ($0.165 per common share)

  ​

 

(199.6)

 

(199.6)

Stock-based compensation expense

  ​

 

 

26.6

 

 

 

 

 

26.6

Balance as of March 31, 2025

  ​

1,212.4

 

$

1.2

 

(3.1)

 

$

(174.0)

 

$

3,672.2

 

$

7,445.9

 

$

(644.1)

 

$

61.9

 

$

10,363.1

$

9.3

Stock Repurchase Programs

On April 23, 2024, the Board authorized a stock repurchase program under which the Company may purchase up to $2,000.0 of its Common Stock during the three-year period ending on the close of business on April 28, 2027 (the “2024 Stock Repurchase Program”). The 2024 Stock Repurchase Program became effective on April 29, 2024. During the three months ended March 31, 2026, the Company repurchased 1.3 million shares of its Common Stock for $178.0 under the 2024 Stock Repurchase Program. All of the repurchased shares under the 2024 Stock Repurchase Program during the three months ended March 31, 2026 were retained in Treasury stock at the time of repurchase. From April 1, 2026 to April 28, 2026, the Company repurchased 0.3 million additional shares of its Common Stock for $44.2, and, as of April 29, 2026, the Company has remaining authorization to purchase up to $648.8 of its Common Stock under the 2024 Stock Repurchase Program. The timing and amount of any future repurchases will depend on a number of factors, such as the levels of cash generation from operations, the volume of stock options exercised by employees, cash requirements for acquisitions, dividends paid, economic and market conditions and the price of the Common Stock.

Dividends

Contingent upon declaration by the Board, the Company pays a quarterly dividend on shares of its Common Stock. On October 21, 2025, the Board approved an increase to the Company’s quarterly dividend rate from $0.165 per share to $0.25 per share, effective with dividends declared in the fourth quarter of 2025, contingent upon declaration by the Board. The following table summarizes the dividends declared and paid during the three months ended March 31, 2026 and 2025:

Three Months Ended

March 31, 

  ​ ​ ​

2026

2025

Dividends declared

$

307.4

$

199.6

Dividends paid (including those declared in the prior year)

 

306.7

 

199.5

v3.26.1
Stock-Based Compensation
3 Months Ended
Mar. 31, 2026
Stock-Based Compensation  
Stock-Based Compensation

Note 8—Stock-Based Compensation

For the three months ended March 31, 2026 and 2025, the Company’s Income before income taxes was reduced by stock-based compensation expense of $34.2 and $26.6, respectively. In addition, for the three months ended March 31, 2026 and 2025, the Company recognized aggregate income tax benefits (associated with stock-based compensation) of $54.7 and $23.0, respectively, in Provision for income taxes in the accompanying Condensed Consolidated Statements of Income. These aggregate income tax benefits during the three months ended March 31, 2026 and 2025 include excess tax benefits of $50.9 and $20.1, respectively, from option exercises.

The impact associated with recognizing excess tax benefits from option exercises in the provision for income taxes on our consolidated financial statements could result in significant fluctuations in our effective tax rate in the future, since the provision for income taxes will be impacted by the timing and intrinsic value of future stock-based compensation award exercises.

Stock-based compensation expense includes the estimated effects of forfeitures, which are adjusted over the requisite service period to the extent actual forfeitures differ or are expected to differ from such estimates. Changes in estimated forfeitures are recognized in the period of change and impact the amount of expense to be recognized in future periods. The expense incurred for stock-based compensation plans is included in Selling, general and administrative expenses in the accompanying Condensed Consolidated Statements of Income.

Stock Options

In May 2017, the Company adopted the 2017 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (the “2017 Employee Option Plan”), which provided for the issuance of 120,000,000 shares.  In March 2021, the Board authorized and approved the Amended and Restated 2017 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries (the “Amended 2017 Employee Option Plan” and, together with the 2017 Employee Option Plan, the “2017 Option Plan”), which among other things, increased the number of shares reserved for issuance under the plan by 80,000,000 shares. The Amended 2017 Employee Option Plan was approved by the Company’s stockholders and became effective on May 19, 2021. As of March 31, 2026, there were 47,400,531 shares of Common Stock available for the granting of additional stock options under the 2017 Option Plan. Prior to the approval of the 2017 Employee Option Plan, the Company issued stock options under the 2009 Stock Purchase and Option Plan for Key Employees of Amphenol and Subsidiaries, and its amendment (the “2009 Employee Option Plan”). No additional stock options will be granted under the 2009 Employee Option Plan.  Options granted under the 2017 Option Plan and the 2009 Employee Option Plan generally vest ratably over a period of five years from the date of grant and are generally exercisable over a period of 10 years from the date of grant.

Stock option activity for the three months ended March 31, 2026 was as follows:

  ​

Weighted

 

  ​

Average

Aggregate

 

  ​

Weighted

Remaining

Intrinsic

 

  ​

Average

Contractual

Value

  ​

Options

  ​ ​

Exercise Price

  ​ ​

Term (in years)

  ​ ​

(in millions)

 

Options outstanding at January 1, 2026

  ​

88,821,121

$

36.62

 

5.43

$

8,753.6

Options granted

  ​

41,924

 

138.11

Options exercised

  ​

(4,082,462)

 

23.52

Options forfeited

  ​

(67,835)

 

53.92

Options outstanding at March 31, 2026

  ​

84,712,748

$

37.29

5.29

$

7,545.2

Vested and non-vested options expected to vest at March 31, 2026

  ​

83,146,659

$

36.80

 

5.24

$

7,446.0

Exercisable options at March 31, 2026

  ​

55,722,782

$

27.14

 

4.12

$

5,528.2

A summary of the status of the Company’s non-vested options as of March 31, 2026 and changes during the three months then ended is as follows:

  ​ ​ ​

  ​ ​ ​

Weighted

 

Average

Fair Value at 

Options

Grant Date

 

Non-vested options at January 1, 2026

 

29,426,936

$

15.58

Options granted

 

41,924

 

37.69

Options vested

 

(411,059)

 

11.68

Options forfeited

 

(67,835)

 

14.88

Non-vested options at March 31, 2026

 

28,989,966

$

15.67

During the three months ended March 31, 2026 and 2025, the following activity occurred under the Company’s option plans:

 

Three Months Ended

  ​ ​ ​

 

March 31, 

2026

2025

Total intrinsic value of stock options exercised

$

504.4

$

140.3

Total fair value of stock options vested

 

4.8

 

2.3

As of March 31, 2026, the total compensation cost related to non-vested options not yet recognized was approximately $324.4 with a weighted average expected amortization period of 3.28 years.

The grant-date fair value of each option grant under the 2009 Employee Option Plan and the 2017 Option Plan is estimated using the Black-Scholes option pricing model. The grant-date fair value of each share grant is determined based on the closing share price of the Company’s Common Stock on the date of the grant. The fair value is then amortized on a straight-line basis over the requisite service period of the awards, which is generally the vesting period. Use of a valuation model for option grants requires management to make certain assumptions with respect to selected model inputs. Expected share price volatility is calculated based on the historical volatility of the Common Stock and implied volatility derived from related exchange traded options. The average expected life is based on the contractual term of the option and expected exercise and historical experience. The risk-free interest rate is based on U.S. Treasury zero-coupon issuances with a remaining term equal to the expected life assumed at the date of grant. The expected annual dividend per share is based on the Company’s dividend rate.

Restricted Stock

On May 16, 2024, the Company’s stockholders approved the 2024 Restricted Stock Plan for Directors of Amphenol Corporation (the “2024 Directors Restricted Stock Plan”), which is administered by the Compensation Committee of the Board and reserves 500,000 shares of the Company’s Common Stock for future issuance pursuant to the plan. As of March 31, 2026, the number of restricted shares available for grant under the 2024 Directors Restricted Stock Plan was 461,092. Restricted shares granted under the 2024 Directors Restricted Stock Plan vest on the earlier of the first anniversary of the date of grant or the day immediately prior to the date of the next regular annual meeting of the Company’s stockholders following such date of grant. Grants under the 2024 Directors Restricted Stock Plan entitle the holder to receive shares of the Company’s Common Stock without payment. The 2024 Directors Restricted Stock Plan will expire on May 15, 2034, after which date no awards may be granted under the plan.

Restricted share activity for the three months ended March 31, 2026 was as follows:

Weighted Average

Remaining

Restricted

Fair Value at 

Amortization

  ​

Shares

 

Grant Date

 

Term (in years)

 

Restricted shares outstanding at January 1, 2026

 

16,520

$

86.88

0.37

Restricted shares granted

 

548

 

136.25

Restricted shares outstanding at March 31, 2026

 

17,068

$

88.47

 

0.13

As of March 31, 2026, the total compensation cost related to non-vested restricted shares not yet recognized was approximately $0.2.

v3.26.1
Earnings Per Share
3 Months Ended
Mar. 31, 2026
Earnings Per Share  
Earnings Per Share

Note 9—Earnings Per Share

Basic earnings per common share (“EPS”) is computed by dividing net income attributable to Amphenol Corporation by the weighted average number of common shares outstanding. Diluted EPS is computed by dividing net income attributable to Amphenol Corporation by the weighted average number of outstanding common shares, including dilutive common shares, the dilutive effect of which relates to stock options. The following is a reconciliation of the basic weighted average common shares outstanding to diluted weighted average common shares outstanding, which were used to calculate the earnings per share (basic and diluted) for the three months ended March 31, 2026 and 2025:

Three Months Ended

March 31, 

(dollars and shares in millions, except per share data)

  ​ ​

2026

  ​ ​

2025

  ​ ​

Net income attributable to Amphenol Corporation stockholders

$

933.0

$

737.8

Weighted average common shares outstanding — Basic

 

1,228.9

 

1,209.8

Effect of dilutive stock options

 

60.8

 

56.4

Weighted average common shares outstanding — Diluted

 

1,289.7

 

1,266.2

Net income attributable to Amphenol Corporation per common share — Basic

$

0.76

$

0.61

Net income attributable to Amphenol Corporation per common share — Diluted

$

0.72

$

0.58

There were no anti-dilutive common shares excluded from the computation above for the three months ended March 31, 2026. Excluded from the computation above were anti-dilutive common shares (primarily related to outstanding stock options) of 8.2 million for the three months ended March 31, 2025.

v3.26.1
Benefit Plans and Other Postretirement Benefits
3 Months Ended
Mar. 31, 2026
Benefit Plans and Other Postretirement Benefits  
Benefit Plans and Other Postretirement Benefits

Note 10—Benefit Plans and Other Postretirement Benefits

The Company and certain of its domestic subsidiaries have defined benefit pension plans (the “U.S. Pension Plans”), which cover certain U.S. employees and which represent the majority of the plan assets and benefit obligations of the aggregate defined benefit plans of the Company. The U.S. Pension Plans’ benefits are generally based on years of service and compensation and are generally noncontributory. The majority of U.S. employees are not covered by the U.S. Pension Plans and are instead covered by various defined contribution plans. The Company also has an unfunded Supplemental Employee Retirement Plan (“SERP” and, together with the U.S. Pension Plans, “U.S. Plans”), which provides for the payment of the portion of annual pension that cannot be paid from the retirement plan as a result of regulatory limitations on average compensation for purposes of the benefit computation. Certain foreign subsidiaries have defined benefit plans covering their employees (the “Foreign Plans” and, together with the U.S. Plans, the “Plans”).

The following is a summary, based on the most recent actuarial valuations, of the components of the Company’s net pension expense of the Company’s defined benefit plans for the three months ended March 31, 2026 and 2025:

Three Months Ended

March 31, 

  ​ ​ ​

2026

 

2025

Service cost

 

$

3.3

$

0.8

Interest cost

 

12.5

 

5.8

Expected return on plan assets

 

(13.8)

 

(6.6)

Amortization of prior service cost

 

0.3

 

0.3

Amortization of net actuarial losses

 

0.7

 

0.8

Net pension expense

 

$

3.0

$

1.1

There is no current requirement for cash contributions to any of the U.S. Plans, and the Company plans to evaluate annually, based on actuarial calculations and the investment performance of the Plans’ assets, the timing and amount of cash contributions in the future, if any.

The Company offers various defined contribution plans for certain U.S. and foreign employees. Participation in these plans is based on certain eligibility requirements. The Company matches employee contributions to the U.S. defined contribution plans up to a maximum of 7% of eligible compensation. During the three months ended March 31, 2026 and 2025, the Company provided matching contributions to the U.S. defined contribution plans of approximately $14.3 and $10.6, respectively.

v3.26.1
Acquisitions
3 Months Ended
Mar. 31, 2026
Acquisitions  
Acquisitions

Note 11—Acquisitions

2026 Acquisitions

On January 9, 2026, the Company completed the acquisition of the Connectivity and Cable Solutions business (which we now refer to collectively as “CommScope”) of Vistance Networks, Inc. (“Vistance,” formerly known as CommScope Holding Company, Inc.) for an aggregate purchase price of $10,592.9 in cash, subject to customary post-closing adjustments. CommScope is included in the Communications Solutions segment. The CommScope acquisition was funded through a combination of net proceeds from the Delayed Draw Term Loans, the November Senior Notes and cash on hand, as discussed in Note 4 herein. CommScope adds significant fiber optic interconnect capabilities for the IT datacom and communications networks markets, as well as a diverse range of industrial interconnect products for the building infrastructure connectivity market. The accompanying Condensed Consolidated Statements of Income include the results of CommScope for the period from the acquisition date through March 31, 2026. Net sales and Net loss from CommScope during this period were $871.5 and $9.0, respectively. The Net loss excludes interest expense and external transaction costs related to the acquisition and includes $155.5 ($119.1 after-tax) of non-cash amortization related to the value associated with acquired backlog and acquisition-related inventory step-up discussed below.

Acquisition-related expenses

During the three months ended March 31, 2026, the Company incurred a total of $248.9 ($200.6 after-tax, or $0.16 per diluted share) of acquisition-related expenses, comprised primarily of (i) the non-cash amortization related to the value associated with acquired backlog resulting from the CommScope and Trexon acquisitions and external transaction costs related to acquisitions (such acquisition-related expenses aggregating $116.9, of which $90.3 relates to the CommScope acquisition, are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $132.0 associated with the CommScope acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income).

Preliminary Allocation of Purchase Price

The purchase price for the CommScope acquisition was allocated to the tangible and identifiable intangible assets acquired and liabilities assumed of CommScope based upon their estimated fair values. The excess purchase price over the fair value of the underlying net assets acquired was allocated to goodwill, which primarily represents the value of assembled workforce along with anticipated cost savings and efficiencies associated with the integration of CommScope and other intangible assets acquired that do not qualify for separate recognition. The Company is in the process of completing its analysis of the fair value of the net assets acquired through the use of independent valuations and management’s estimates. Since the following information is based on preliminary assessments made by management as of March 31, 2026, the acquisition accounting for CommScope is subject to final adjustment and it is possible that the final assessment of values may differ from this preliminary assessment. The following table summarizes the preliminary assessment of the estimated fair values of the identifiable assets acquired and liabilities assumed, as of the date of acquisition of January 9, 2026.

ASSETS

Cash and cash equivalents

$

204.4

Accounts receivable

720.0

Inventories

 

656.1

Prepaid expenses and other current assets

 

65.1

Property, plant and equipment, net

 

319.7

Goodwill

 

6,978.4

Other intangible assets, net

 

3,306.0

Other long-term assets

 

319.8

Assets acquired

 

12,569.5

LIABILITIES

Accounts payable

 

416.4

Accrued salaries, wages and employee benefits

137.6

Other accrued expenses

265.9

Deferred income taxes

730.2

Other long-term liabilities

215.2

Noncontrolling interests

6.9

Liabilities assumed

 

1,772.2

Net assets acquired

 

$

10,797.3

The $3,306.0 of acquired intangible assets is comprised of $1,456.0, $1,211.0, $592.0 and $47.0 assigned to proprietary technology, customer relationships, trade names and backlog, respectively, all of which are subject to amortization. These finite-lived acquired intangible assets have a total weighted average useful life of approximately 16 years. The proprietary technology, customer relationships, trade names and backlog have a weighted average useful life of 14 years, 16 years, 22 years and 0.5 years, respectively. These finite-lived intangible assets will be amortized based upon the underlying pattern of economic benefit as reflected by the future net cash inflows. The entire amount of goodwill was assigned to the Communications Solutions segment, none of which is expected to be deductible for tax purposes.

Pro Forma Financial Information

The following table summarizes the unaudited pro forma combined financial information assuming that the CommScope acquisition had occurred on January 1, 2025, and its results had been included in our financial results for the full three months ended March 31, 2026 and 2025. The pro forma amounts are based upon available information and reflect a reasonable estimate of the effects of the CommScope acquisition for the periods presented on the basis set forth herein. The following unaudited pro forma financial information is presented for informational purposes only and does not purport to represent what the results of operations would have been had the CommScope acquisition in fact occurred on the date assumed, nor is it necessarily indicative of the results that may be expected in future periods.

Three Months Ended

March 31,

Pro forma:

  ​ ​ ​

2026

  ​ ​ ​

2025

Net sales

 

$

7,707.7

 

$

5,535.1

Net income attributable to Amphenol Corporation

 

1,120.1

 

496.8

Net income attributable to Amphenol Corporation per common share — Diluted

$

0.87

$

0.39

The unaudited pro forma financial information includes the historical operating results of the Company and CommScope prior to the acquisition, with directly attributable adjustments to reflect the additional depreciation and amortization, the associated incurrence of interest expense and interest income earned, acquisition-related costs and the consequential tax effects from January 1, 2025. The unaudited pro forma financial information for the three months ended March 31, 2026 was adjusted to remove $222.3 ($181.0 after-tax, or $0.14 per diluted share) of nonrecurring acquisition-related expenses resulting from the CommScope acquisition, comprised of (i) $66.8 in transaction expenses, (ii) $132.0 related to amortization of inventory step-up costs, and (iii) $23.5 of amortization related to the value associated with acquired backlog. The unaudited pro forma financial information for the three months ended March 31, 2025 was adjusted to recognize $243.2 ($201.9 after-tax, or $0.16 per diluted share) of nonrecurring acquisition-related expenses resulting from the CommScope acquisition, comprised of (i) $87.7 in transaction expenses, (ii) $132.0 related to amortization of inventory step-up costs, and (iii) $23.5 of amortization related to the value associated with acquired backlog. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have been achieved had the CommScope acquisition been consummated as of the date indicated, nor indicative of any future results, including the realization of any synergies or cost savings.

2025 Acquisitions

During the year ended December 31, 2025, the Company completed five acquisitions (collectively, the “2025 Acquisitions”), including (i) the acquisition of the Outdoor Wireless Networks segment and Distributed Antenna Systems business (collectively, “Andrew”) from Vistance and (ii) the acquisition of Trexon, for approximately $3,818.6, net of cash acquired. The Andrew acquisition is included in the Communications Solutions segment, three acquisitions, including Trexon, are included in the Harsh Environment Solutions segment, and one acquisition is included in the Interconnect and Sensor Systems segment. The 2025 Acquisitions were each funded using cash on hand, proceeds from senior notes, borrowings under the U.S. Commercial Paper Program, or a combination thereof.

As of March 31, 2026, the 2025 Acquisitions resulted in the recognition of $2,162.5 of goodwill and $1,203.0 of definite-lived intangible assets, comprised of customer relationships, proprietary technology and acquired backlog, with the remainder of the purchase price being allocated to other identifiable assets acquired and liabilities assumed. These definite-lived intangible assets are being amortized based upon the underlying pattern of economic benefit as reflected by the future net cash inflows, with the acquired customer relationships having useful lives ranging from 10 to 18 years, the proprietary technology having useful lives ranging from 10 to 15 years, and the acquired backlog having a useful life of approximately 0.4 years. The excess purchase price over the fair value of the underlying assets acquired (net of liabilities assumed) was allocated to goodwill, which primarily represents the value of the assembled workforce along with other intangible assets acquired that do not qualify for separate recognition. The Company expects that $672.8 of the goodwill recognized from the 2025 Acquisitions will be deductible for tax purposes.

The Company completed the acquisition accounting, including the analyses of fair value of assets acquired and liabilities assumed, for two of the 2025 Acquisitions, including the Andrew acquisition, and the final assessment of values did not differ materially from the previous preliminary assessment. The Company is in the process of analyzing and completing the allocation of the fair value of the assets acquired and liabilities assumed for the other three 2025 Acquisitions. Since the current purchase price allocations for such acquisitions are based on preliminary assessments made by management, the acquisition accounting is subject to final adjustments, and it is possible that the final assessments of values may differ from the Company’s preliminary assessments. The operating results of the 2025 Acquisitions were included in the Condensed Consolidated Statements of Income since their respective dates of acquisition. Pro forma financial information, as well as further details regarding the purchase price allocations related to these acquisitions, have not been presented, since the 2025 Acquisitions were not material, either individually or in the aggregate, to the Company’s financial results.

Acquisition-related expenses

During the three months ended March 31, 2025, the Company incurred $104.9 ($82.1 after-tax, or $0.06 per diluted share) of acquisition-related expenses, comprised primarily of (i) the non-cash amortization related to the value associated with acquired backlog resulting from the Andrew acquisition and external transaction costs related to acquisitions (such acquisition-related expenses aggregating $44.0 are presented separately in the Condensed Consolidated Statements of Income) and (ii) the non-cash amortization of acquisition-related inventory step-up costs of $60.9 associated with the Andrew acquisition (such costs are recorded in Cost of sales in the Condensed Consolidated Statements of Income).

v3.26.1
Goodwill and Other Intangible Assets
3 Months Ended
Mar. 31, 2026
Goodwill and Other Intangible Assets  
Goodwill and Other Intangible Assets

Note 12—Goodwill and Other Intangible Assets

The changes in the carrying amount of goodwill by segment were as follows:

  ​ ​ ​

Harsh

  ​ ​ ​

Interconnect

  ​ ​ ​

 

Communications

Environment

and Sensor

 

Solutions

Solutions

Systems

Total

 

Goodwill at December 31, 2025

$

3,858.6

$

4,270.2

$

2,446.6

$

10,575.4

Acquisition-related

 

6,983.5

 

3.9

 

1.3

 

6,988.7

Foreign currency translation

 

(1.5)

 

(5.0)

 

(14.7)

 

(21.2)

Goodwill at March 31, 2026

$

10,840.6

$

4,269.1

$

2,433.2

$

17,542.9

The increase in goodwill during the first three months of 2026 was driven by goodwill recognized from the CommScope acquisition.

Other than goodwill noted above, the Company’s intangible assets as of March 31, 2026 and December 31, 2025 were as follows:

March 31, 2026

December 31, 2025

Weighted

Gross

  ​ ​ ​

  ​ ​ ​

Net

  ​ ​ ​

Gross

  ​ ​ ​

  ​ ​ ​

Net

Average

Carrying

Accumulated

Carrying

Carrying

Accumulated

Carrying

Life (years)

Amount

Amortization

Amount

Amount

Amortization

Amount

Customer relationships

14

$

3,049.9

$

682.1

$

2,367.8

$

1,841.2

$

635.1

$

1,206.1

Proprietary technology

14

 

2,419.7

 

273.1

2,146.6

 

963.9

 

230.2

733.7

Trade names (1)

22

 

603.3

9.2

594.1

11.3

2.2

9.1

Backlog and other (1)

1

 

252.0

 

228.5

23.5

 

205.1

 

181.7

23.4

Total intangible assets (definite-lived)

14

6,324.9

1,192.9

5,132.0

3,021.5

1,049.2

1,972.3

Trade names (indefinite-lived)

269.1

269.1

269.1

269.1

Total

$

6,594.0

$

1,192.9

$

5,401.1

$

3,290.6

$

1,049.2

$

2,241.4

(1) Certain prior period amounts have been reclassified to conform to the current period presentation.

The increase in the gross carrying amount of intangible assets in the first three months of 2026 was primarily driven by certain customer relationships, proprietary technology, trade names and acquired backlog recognized as a result of the CommScope acquisition. Amortization expense for the three months ended March 31, 2026 and 2025 was

approximately $145.6 and $47.3, respectively. Amortization expense for the three months ended March 31, 2026 includes $46.9 related to the amortization of acquired backlog resulting from the CommScope and Trexon acquisitions. Amortization expense for the three months ended March 31, 2025 includes $10.0 related to the amortization of acquired backlog resulting from the Andrew acquisition. Amortization expense relating to the Company’s current intangible assets as of March 31, 2026 estimated for the remainder of 2026 is approximately $318.6, and for each of the next five fiscal years is approximately $387.0 in 2027, $379.8 in 2028, $368.9 in 2029, $366.2 in 2030 and $359.7 in 2031.

v3.26.1
Reportable Business Segments
3 Months Ended
Mar. 31, 2026
Reportable Business Segments  
Reportable Business Segments

Note 13—Reportable Business Segments

The Company organizes its reportable business segments based on the manner in which management evaluates the performance of the Company, combined with the nature of the individual business activities and the product-based solutions offered. The Company aligns its businesses into the following three reportable business segments:

Communications Solutions – the Communications Solutions segment designs, manufactures and markets a broad range of connector and interconnect systems, including high speed, radio frequency, power, fiber optic and other interconnect products; coaxial, fiber optic and high-speed cable; antennas; and other products for use in the information technology and data communications, mobile devices, industrial, communications networks, automotive, commercial aerospace and defense end markets.

Harsh Environment Solutions – the Harsh Environment Solutions segment designs, manufactures and markets a broad range of ruggedized interconnect products, including connectors and interconnect systems, specialty cable, printed circuits and printed circuit assemblies and other products for use in the industrial, defense, commercial aerospace, automotive, communications networks and information technology and data communications end markets.

Interconnect and Sensor Systems – the Interconnect and Sensor Systems segment designs, manufactures and markets a broad range of sensors, sensor-based systems, connectors and value-add interconnect systems used in the automotive, industrial, information technology and data communications, communications networks, defense and commercial aerospace end markets.

This segment structure reflects (i) the manner in which the Chief Operating Decision Maker (“CODM”), who is the Company’s Chief Executive Officer, regularly assesses information for decision-making purposes, including the allocation of resources, and (ii) how the Company operates its businesses, assesses performance, and communicates results and strategy, among other items, to the Board and its stockholders. The Company has three segment managers to lead their respective reportable business segments, each reporting directly to the Chief Executive Officer. The accounting policies of the segments are the same as those for the Company as a whole and are described herein and in Note 1 of the Notes to Consolidated Financial Statements in the 2025 Annual Report. The Company’s CODM assesses each segment’s performance and allocates resources to each of them based on net sales and operating income as adjusted for certain corporate and other related items and before interest, stock-based compensation expense, income taxes, amortization related to certain intangible assets and other non-cash purchase accounting costs, and nonrecurring gains and losses, as outlined in the table below (we refer to this measure as segment operating income). Intersegment net sales and operating expenses have been eliminated in the computation of consolidated net sales and operating income.

The CODM considers period-to-period variances in net sales and segment operating income on a regular basis and uses that information when making decisions about the allocation of operating and capital resources to each segment. Other than segment operating expenses (which is easily computable from the difference between net sales and segment operating income), our CODM is not regularly provided disaggregated segment level expense information as such information is not used in our CODM’s decision-making related to the allocation of operating and capital resources to our segments. The Company also incurs general corporate expenses and costs which are not allocated to the reportable business segments but have been included in “Corporate / Other” in the following table for reconciliation purposes. Assets are reviewed by the CODM on a consolidated basis and therefore are not presented by reportable business segment.

The following table (i) summarizes, by segment, total sales, intersegment sales and external net sales and (ii) reconciles each segment’s external net sales to their respective segment operating income, including segment operating expenses, for the three months ended March 31, 2026 and 2025:

Communications Solutions

Harsh Environment Solutions

Interconnect and Sensor Systems

Total

Three Months Ended March 31, 2026

Total sales

$

4,561.0

$

1,725.4

$

1,413.3

$

7,699.7

Less: Intersegment sales

26.3

32.3

21.0

79.6

External net sales

4,534.7

1,693.1

1,392.3

7,620.1

Less: Segment operating expenses (1)

3,145.3

1,219.8

1,110.6

5,475.7

Segment operating income

$

1,389.4

$

473.3

$

281.7

$

2,144.4

Three Months Ended March 31, 2025

Total sales

$

2,429.5

$

1,295.0

$

1,138.9

$

4,863.4

Less: Intersegment sales

15.8

26.8

9.8

52.4

External net sales

2,413.7

1,268.2

1,129.1

4,811.0

Less: Segment operating expenses (1)

1,752.9

957.0

924.6

3,634.5

Segment operating income

$

660.8

$

311.2

$

204.5

$

1,176.5

_____________________________

(1)The aggregated amount is comprised of cost of sales, selling, general and administrative expenses, and other segment related expenses.

Segment operating income and the reconciliation of segment operating income to consolidated income before income taxes for the three months ended March 31, 2026 and 2025 are as follows:

Three Months Ended

March 31, 

2026

2025

Total segment operating income

$

2,144.4

$

1,176.5

Corporate / Other:

Stock-based compensation expense

(34.2)

(26.6)

Amortization of acquisition-related inventory step-up costs

(132.0)

(60.9)

Acquisition-related expenses

(116.9)

(44.0)

Other operating expenses

(29.5)

(20.2)

Operating income

1,831.8

1,024.8

Interest expense

(207.9)

(76.5)

Other income (expense), net

21.8

14.6

Income before income taxes

$

1,645.7

$

962.9

Depreciation and amortization expense by segment for the three months ended March 31, 2026 and 2025 is as follows:

  ​ ​ ​

Three Months Ended

March 31, 

2026

2025

Communications Solutions

$

211.3

$

89.8

Harsh Environment Solutions

 

47.9

38.3

Interconnect and Sensor Systems

40.0

34.7

Corporate / Other

186.6

73.5

Total

$

485.8

$

236.3

For the three months ended March 31, 2026, depreciation and amortization expense in Corporate / Other includes (i) $46.9 related to the amortization of acquired backlog resulting from the CommScope and Trexon acquisitions, which is included in Acquisition-related expenses in the Condensed Consolidated Statements of Income, and (ii) $132.0 of amortization of acquisition-related inventory step-up costs associated with the CommScope acquisition, which is included in Cost of sales in the Condensed Consolidated Statements of Income, as discussed in Note 11 herein. For the three months ended March 31, 2025, depreciation and amortization expense in Corporate / Other includes (i) $10.0 related to the amortization of acquired backlog resulting from the Andrew acquisition, which is included in Acquisition-related expenses in the Condensed Consolidated Statements of Income, and (ii) $60.9 of amortization of acquisition-related inventory step-up costs associated with the Andrew acquisition, which is included in Cost of sales in the Condensed Consolidated Statements of Income, as discussed in Note 11 herein. These expenses are reported in Corporate / Other, since they are not components in the determination of segment operating income.

v3.26.1
Revenue Recognition
3 Months Ended
Mar. 31, 2026
Revenue Recognition  
Revenue Recognition

Note 14—Revenue Recognition

Revenues consist of product sales to either end customers and their appointed contract manufacturers (including original equipment manufacturers) or to distributors, and the vast majority of our sales are recognized at a point-in-time under the core principle of recognizing revenue when control transfers to the customer. With limited exceptions, the Company recognizes revenue at the point in time when we ship or deliver the product from our manufacturing facility to our customer, when our customer accepts and has legal title of the goods, and where the Company has a present right to payment for such goods. For the three months ended March 31, 2026 and 2025, less than 5% of our net sales were recognized over time, where the associated contracts relate to the sale of goods with no alternative use as they are only sold to a single customer and whose underlying contract terms provide the Company with an enforceable right to payment, including a reasonable profit margin, for performance completed to date, in the event of customer termination. Since we typically invoice our customers at the same time that we satisfy our performance obligations, contract assets and contract liabilities related to our contracts with customers recorded in the Condensed Consolidated Balance Sheets were not material as of March 31, 2026 and December 31, 2025. These amounts are recorded in the accompanying Condensed Consolidated Balance Sheets within Prepaid expenses and other current assets or Other accrued expenses as of March 31, 2026 and December 31, 2025.

The Company receives customer orders negotiated with multiple delivery dates that may extend across more than one reporting period until the contract is fulfilled, the end of the order period is reached, or a pre-determined maximum order value has been reached. Orders typically fluctuate from quarter to quarter based on customer demand and general business conditions. It is generally expected that a substantial portion of our remaining performance obligations will be fulfilled within three months, and nearly all of our performance obligations are fulfilled within one year. Since our performance obligations are part of contracts that generally have original durations of one year or less, we have not disclosed the aggregate amount of transaction prices associated with unsatisfied or partially unsatisfied performance obligations as of March 31, 2026.

While the Company typically offers standard product warranty coverage that provides assurance that our products will conform to the contractually agreed-upon specifications for a limited period from the date of shipment, the Company’s warranty liabilities as of March 31, 2026 and December 31, 2025, and related warranty expense for the three months ended March 31, 2026 and 2025, have not been and were not material in the accompanying Condensed Consolidated Financial Statements.

Disaggregation of Net Sales

The following table shows our net sales disaggregated into categories the Company considers meaningful to depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors for the three months ended March 31, 2026 and 2025:

Harsh

Communications

Environment

Interconnect and

Total Reportable

Solutions

Solutions

Sensor Systems

Business Segments

Three Months Ended March 31,

  ​ ​ ​

2026

  ​

2025

  ​ ​ ​

2026

  ​

2025

  ​ ​ ​

2026

  ​

2025

2026

  ​

2025

Net sales by:

Sales channel:

 

End customers and contract manufacturers

 

$

3,197.5

 

$

1,916.7

$

1,231.4

 

$

924.6

 

$

1,334.4

 

$

1,087.6

$

5,763.3

 

$

3,928.9

Distributors and resellers

 

1,337.2

 

497.0

 

461.7

 

343.6

 

57.9

 

41.5

 

1,856.8

 

882.1

$

4,534.7

$

2,413.7

$

1,693.1

$

1,268.2

$

1,392.3

$

1,129.1

$

7,620.1

$

4,811.0

Geography:

United States

$

1,617.2

$

604.8

$

922.3

$

686.4

$

412.3

$

352.4

$

2,951.8

$

1,643.6

China

 

587.4

 

481.8

 

136.1

 

106.2

 

214.5

 

205.9

938.0

793.9

Other foreign locations

 

2,330.1

 

1,327.1

 

634.7

 

475.6

 

765.5

 

570.8

 

3,730.3

2,373.5

$

4,534.7

$

2,413.7

$

1,693.1

$

1,268.2

$

1,392.3

$

1,129.1

$

7,620.1

$

4,811.0

Net sales by geographic area are based on the customer location to which the product is shipped. As the Company is not organized by product or group of products, it is impracticable to disclose net sales by product or group of products.

v3.26.1
Commitments and Contingencies
3 Months Ended
Mar. 31, 2026
Commitments and Contingencies  
Commitments and Contingencies

Note 15—Commitments and Contingencies

The Company is party to a number of legal and/or regulatory actions arising out of the normal course of its business. The Company records a loss contingency liability when, in the opinion of management after seeking legal advice, a loss is considered probable and the amount can be reasonably estimated. Based on information currently available and management’s evaluation of such information, the Company does not believe that the resolution of any existing legal or regulatory action is expected to have a material adverse effect on the Company’s financial condition, results of operations or cash flows. The Company’s legal costs associated with defending itself are recorded to expense as incurred.

Certain operations of the Company are subject to environmental laws and regulations that govern the discharge of pollutants into the air and water, as well as the handling and disposal of solid and hazardous wastes. The Company believes that its operations are currently in substantial compliance with applicable environmental laws and regulations and that the costs of continuing compliance will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows.

v3.26.1
Pay vs Performance Disclosure - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Pay vs Performance Disclosure    
Net Income (Loss) $ 933.0 $ 737.8
v3.26.1
Insider Trading Arrangements
3 Months Ended
Mar. 31, 2026
Trading Arrangements, by Individual  
Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Adopted false
Rule 10b5-1 Arrangement Terminated false
Non-Rule 10b5-1 Arrangement Terminated false
v3.26.1
Basis of Presentation and Principles of Consolidation (Policy)
3 Months Ended
Mar. 31, 2026
Basis of Presentation and Principles of Consolidation  
Principles of Consolidation

The Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 2025, and each of the related Condensed Consolidated Statements of Income, Condensed Consolidated Statements of Comprehensive Income and Condensed Consolidated Statements of Cash Flow for the three months ended March 31, 2026 and 2025, include the accounts of Amphenol Corporation and its subsidiaries (“Amphenol,” the “Company,” “we,” “our” or “us”). All material intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements included herein are unaudited. In the opinion of management, the condensed consolidated financial statements reflect all adjustments, including normal recurring adjustments considered necessary for a fair presentation of the results, in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The results of operations for the three months ended March 31, 2026 are not necessarily indicative of the results to be expected for the full year. These condensed consolidated financial statements and the related notes should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “2025 Annual Report”).

v3.26.1
Inventories (Tables)
3 Months Ended
Mar. 31, 2026
Inventories  
Schedule of Inventories

March 31, 

December 31, 

 

  ​ ​ ​

2026

  ​ ​ ​

2025

 

Raw materials and supplies

 

$

1,666.7

 

$

1,413.0

Work in process

 

1,203.6

 

960.3

Finished goods

 

1,216.5

 

1,051.6

 

$

4,086.8

 

$

3,424.9

v3.26.1
Debt (Tables)
3 Months Ended
Mar. 31, 2026
Debt  
Schedule of debt

 

March 31, 2026

December 31, 2025

 

Carrying

Approximate

Carrying

Approximate

 

  ​ ​ ​

Amount

    

Fair Value

    

Amount

    

Fair Value

 

Revolving Credit Facility

$

 

$

 

$

 

$

U.S. Commercial Paper Program

 

 

 

 

 

 

Euro Commercial Paper Program

 

 

 

 

 

 

364-Day Delayed Draw Term Loan

1,534.1

1,534.1

Three-Year Delayed Draw Term Loan

1,534.1

 

 

1,534.1

 

 

 

4.750% Senior Notes due March 2026

 

 

 

 

349.9

 

350.8

0.750% Euro Senior Notes due May 2026

576.9

 

 

575.5

 

 

586.5

 

584.2

5.050% Senior Notes due April 2027

700.9

 

 

705.4

 

 

701.2

 

709.8

Floating Rate Senior Notes due November 2027

500.0

499.8

500.0

501.0

3.800% Senior Notes due November 2027

749.6

746.0

749.5

749.5

4.375% Senior Notes due June 2028

749.5

752.1

749.5

757.5

2.000% Euro Senior Notes due October 2028

576.1

 

 

559.4

 

 

585.8

 

578.2

3.900% Senior Notes due November 2028

749.3

744.2

749.2

747.7

5.050% Senior Notes due April 2029

449.7

 

 

459.4

 

 

449.7

 

463.0

4.350% Senior Notes due June 2029

499.9

 

 

501.2

 

 

499.8

 

502.4

2.800% Senior Notes due February 2030

899.7

 

 

848.0

 

 

899.7

 

853.9

4.125% Senior Notes due November 2030

999.0

986.0

999.0

993.8

3.625% Euro Senior Notes due March 2031

575.9

577.7

2.200% Senior Notes due September 2031

748.5

 

 

665.3

 

 

748.4

 

669.4

3.125% Euro Senior Notes due June 2032

687.6

671.7

699.1

697.2

4.400% Senior Notes due February 2033

1,248.6

1,221.0

1,248.5

1,236.4

5.250% Senior Notes due April 2034

599.5

 

 

613.1

 

 

599.5

 

623.0

5.000% Senior Notes due January 2035

746.8

749.2

746.7

762.9

4.625% Senior Notes due February 2036

1,598.4

1,547.4

1,598.3

1,569.1

5.375% Senior Notes due November 2054

492.5

 

 

477.9

 

 

492.5

 

485.8

5.300% Senior Notes due November 2055

1,647.3

1,549.7

1,647.3

1,575.4

Other debt

 

1.4

 

 

1.4

 

 

1.8

 

1.8

Less: unamortized deferred debt issuance costs

 

(116.4)

 

 

 

 

(99.9)

 

Total debt

 

18,748.9

 

 

18,519.6

 

 

15,502.0

 

15,412.8

Less: current portion

 

2,109.6

 

2,110.5

 

 

937.2

 

935.8

Total long-term debt

$

16,639.3

 

$

16,409.1

 

$

14,564.8

$

14,477.0

v3.26.1
Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2026
Fair Value Measurements  
Fair values of financial and non-financial assets and liabilities

Fair Value Measurements

Quoted Prices in

Significant

Significant

Active Markets

Observable

Unobservable

for Identical

Inputs

Inputs

Total

Assets (Level 1)

(Level 2)

(Level 3)

March 31, 2026:

Short-term investments

$

455.1

$

$

455.1

$

Long-term investments

0.4

0.4

Forward contracts

(12.5)

(12.5)

Redeemable noncontrolling interests

(9.1)

(9.1)

Total

$

433.9

$

$

443.0

$

(9.1)

December 31, 2025:

Short-term investments

$

303.6

$

$

303.6

$

Long-term investments

0.2

0.2

Forward contracts

0.3

0.3

Redeemable noncontrolling interests

(9.3)

(9.3)

Total

$

294.8

$

$

304.1

$

(9.3)

v3.26.1
Income Taxes (Tables)
3 Months Ended
Mar. 31, 2026
Income Taxes  
Schedule of provision for income taxes and effective tax rate

Three Months Ended

March 31, 

2026

2025

Provision for income taxes

$

(702.4)

$

(218.7)

Effective tax rate

 

42.7

%  

 

22.7

%

v3.26.1
Stockholders' Equity and Noncontrolling Interests (Tables)
3 Months Ended
Mar. 31, 2026
Stockholders' Equity and Noncontrolling Interests  
Rollforward of consolidated changes in equity

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2026 is as follows:

  ​

Stockholders’ equity attributable to Amphenol Corporation

 

  ​

Accumulated

Redeemable

  ​

Common Stock

Treasury Stock

Additional

Other

Non-

Non-

  ​

Shares

Shares

Paid-In

Retained

Comprehensive

controlling

Total

controlling

  ​

(in millions)

  ​ ​

Amount

  ​ ​

(in millions)

  ​ ​

Amount

  ​ ​

Capital

  ​ ​

Earnings

  ​ ​

Loss

  ​ ​

Interests

  ​ ​

Equity

  ​ ​

Interests

  ​

Balance as of December 31, 2025

  ​

1,228.9

 

$

1.2

 

(2.4)

 

$

(195.8)

 

$

4,232.9

 

$

9,854.3

 

$

(479.5)

 

$

87.3

 

$

13,500.4

 

$

9.3

Net income

  ​

 

933.0

 

10.3

 

943.3

Other comprehensive income (loss)

  ​

 

(14.4)

 

1.1

 

(13.3)

(0.2)

Acquisitions resulting in noncontrolling interests

  ​

 

6.9

 

6.9

Purchase of treasury stock

  ​

(1.3)

 

(178.0)

 

(178.0)

Retirement of treasury stock

  ​

 

 

 

Stock options exercised

  ​

3.3

0.8

63.8

 

80.3

(47.8)

 

96.3

Dividends declared ($0.25 per common share)

  ​

 

(307.4)

 

(307.4)

Stock-based compensation expense

  ​

 

34.2

 

34.2

Balance as of March 31, 2026

  ​

1,232.2

 

$

1.2

 

(2.9)

 

$

(310.0)

 

$

4,347.4

 

$

10,432.1

 

$

(493.9)

 

$

105.6

 

$

14,082.4

 

$

9.1

A rollforward of consolidated changes in equity and redeemable noncontrolling interests for the three months ended March 31, 2025 is as follows:

  ​

Stockholders’ equity attributable to Amphenol Corporation

  ​

Accumulated

Redeemable

  ​

Common Stock

Treasury Stock

Additional

Other

Non-

Non-

  ​

Shares

Shares

Paid-In

Retained

Comprehensive

controlling

Total

controlling

  ​

(in millions)

  ​ ​

Amount

  ​ ​

(in millions)

  ​ ​

Amount

  ​ ​

Capital

  ​ ​

Earnings

  ​ ​

Loss

  ​ ​

Interests

  ​ ​

Equity

  ​ ​

Interests

  ​

Balance as of December 31, 2024

  ​

1,212.9

 

$

1.2

 

(3.6)

 

$

(199.7)

 

$

3,601.8

 

$

7,105.0

 

$

(716.3)

 

$

55.4

 

$

9,847.4

 

$

8.7

Net income

  ​

 

737.8

 

6.1

 

743.9

0.3

Other comprehensive income (loss)

  ​

 

72.2

0.4

 

72.6

0.3

Purchase of treasury stock

  ​

(2.7)

 

(180.9)

 

(180.9)

Retirement of treasury stock

  ​

(2.7)

2.7

 

180.9

 

(180.9)

 

Stock options exercised

  ​

2.2

0.5

25.7

 

43.8

(16.4)

 

53.1

Dividends declared ($0.165 per common share)

  ​

 

(199.6)

 

(199.6)

Stock-based compensation expense

  ​

 

 

26.6

 

 

 

 

 

26.6

Balance as of March 31, 2025

  ​

1,212.4

 

$

1.2

 

(3.1)

 

$

(174.0)

 

$

3,672.2

 

$

7,445.9

 

$

(644.1)

 

$

61.9

 

$

10,363.1

$

9.3

Schedules of dividends

Three Months Ended

March 31, 

  ​ ​ ​

2026

2025

Dividends declared

$

307.4

$

199.6

Dividends paid (including those declared in the prior year)

 

306.7

 

199.5

v3.26.1
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2026
Stock-Based Compensation  
Schedule of stock option activity

  ​

Weighted

 

  ​

Average

Aggregate

 

  ​

Weighted

Remaining

Intrinsic

 

  ​

Average

Contractual

Value

  ​

Options

  ​ ​

Exercise Price

  ​ ​

Term (in years)

  ​ ​

(in millions)

 

Options outstanding at January 1, 2026

  ​

88,821,121

$

36.62

 

5.43

$

8,753.6

Options granted

  ​

41,924

 

138.11

Options exercised

  ​

(4,082,462)

 

23.52

Options forfeited

  ​

(67,835)

 

53.92

Options outstanding at March 31, 2026

  ​

84,712,748

$

37.29

5.29

$

7,545.2

Vested and non-vested options expected to vest at March 31, 2026

  ​

83,146,659

$

36.80

 

5.24

$

7,446.0

Exercisable options at March 31, 2026

  ​

55,722,782

$

27.14

 

4.12

$

5,528.2

Summary of status of non-vested options and changes during the year

  ​ ​ ​

  ​ ​ ​

Weighted

 

Average

Fair Value at 

Options

Grant Date

 

Non-vested options at January 1, 2026

 

29,426,936

$

15.58

Options granted

 

41,924

 

37.69

Options vested

 

(411,059)

 

11.68

Options forfeited

 

(67,835)

 

14.88

Non-vested options at March 31, 2026

 

28,989,966

$

15.67

Summary of activity in the option plans

 

Three Months Ended

  ​ ​ ​

 

March 31, 

2026

2025

Total intrinsic value of stock options exercised

$

504.4

$

140.3

Total fair value of stock options vested

 

4.8

 

2.3

Schedule of restricted share activity

Restricted share activity for the three months ended March 31, 2026 was as follows:

Weighted Average

Remaining

Restricted

Fair Value at 

Amortization

  ​

Shares

 

Grant Date

 

Term (in years)

 

Restricted shares outstanding at January 1, 2026

 

16,520

$

86.88

0.37

Restricted shares granted

 

548

 

136.25

Restricted shares outstanding at March 31, 2026

 

17,068

$

88.47

 

0.13

v3.26.1
Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2026
Earnings Per Share  
Schedule of the reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding

Three Months Ended

March 31, 

(dollars and shares in millions, except per share data)

  ​ ​

2026

  ​ ​

2025

  ​ ​

Net income attributable to Amphenol Corporation stockholders

$

933.0

$

737.8

Weighted average common shares outstanding — Basic

 

1,228.9

 

1,209.8

Effect of dilutive stock options

 

60.8

 

56.4

Weighted average common shares outstanding — Diluted

 

1,289.7

 

1,266.2

Net income attributable to Amphenol Corporation per common share — Basic

$

0.76

$

0.61

Net income attributable to Amphenol Corporation per common share — Diluted

$

0.72

$

0.58

v3.26.1
Benefit Plans and Other Postretirement Benefits (Tables)
3 Months Ended
Mar. 31, 2026
Benefit Plans and Other Postretirement Benefits  
Schedule of components of net pension expense

Three Months Ended

March 31, 

  ​ ​ ​

2026

 

2025

Service cost

 

$

3.3

$

0.8

Interest cost

 

12.5

 

5.8

Expected return on plan assets

 

(13.8)

 

(6.6)

Amortization of prior service cost

 

0.3

 

0.3

Amortization of net actuarial losses

 

0.7

 

0.8

Net pension expense

 

$

3.0

$

1.1

v3.26.1
Acquisitions (Tables) - CommScope's Connectivity and Cable Solutions Business
3 Months Ended
Mar. 31, 2026
Acquisitions  
Schedule of preliminary allocation of purchase price

ASSETS

Cash and cash equivalents

$

204.4

Accounts receivable

720.0

Inventories

 

656.1

Prepaid expenses and other current assets

 

65.1

Property, plant and equipment, net

 

319.7

Goodwill

 

6,978.4

Other intangible assets, net

 

3,306.0

Other long-term assets

 

319.8

Assets acquired

 

12,569.5

LIABILITIES

Accounts payable

 

416.4

Accrued salaries, wages and employee benefits

137.6

Other accrued expenses

265.9

Deferred income taxes

730.2

Other long-term liabilities

215.2

Noncontrolling interests

6.9

Liabilities assumed

 

1,772.2

Net assets acquired

 

$

10,797.3

Schedule of pro forma financial information

Three Months Ended

March 31,

Pro forma:

  ​ ​ ​

2026

  ​ ​ ​

2025

Net sales

 

$

7,707.7

 

$

5,535.1

Net income attributable to Amphenol Corporation

 

1,120.1

 

496.8

Net income attributable to Amphenol Corporation per common share — Diluted

$

0.87

$

0.39

v3.26.1
Goodwill and Other Intangible Assets (Tables)
3 Months Ended
Mar. 31, 2026
Goodwill and Other Intangible Assets  
Schedule of changes in the carrying amount of goodwill by segment

  ​ ​ ​

Harsh

  ​ ​ ​

Interconnect

  ​ ​ ​

 

Communications

Environment

and Sensor

 

Solutions

Solutions

Systems

Total

 

Goodwill at December 31, 2025

$

3,858.6

$

4,270.2

$

2,446.6

$

10,575.4

Acquisition-related

 

6,983.5

 

3.9

 

1.3

 

6,988.7

Foreign currency translation

 

(1.5)

 

(5.0)

 

(14.7)

 

(21.2)

Goodwill at March 31, 2026

$

10,840.6

$

4,269.1

$

2,433.2

$

17,542.9

Summary of the Company's amortizable intangible assets

Other than goodwill noted above, the Company’s intangible assets as of March 31, 2026 and December 31, 2025 were as follows:

March 31, 2026

December 31, 2025

Weighted

Gross

  ​ ​ ​

  ​ ​ ​

Net

  ​ ​ ​

Gross

  ​ ​ ​

  ​ ​ ​

Net

Average

Carrying

Accumulated

Carrying

Carrying

Accumulated

Carrying

Life (years)

Amount

Amortization

Amount

Amount

Amortization

Amount

Customer relationships

14

$

3,049.9

$

682.1

$

2,367.8

$

1,841.2

$

635.1

$

1,206.1

Proprietary technology

14

 

2,419.7

 

273.1

2,146.6

 

963.9

 

230.2

733.7

Trade names (1)

22

 

603.3

9.2

594.1

11.3

2.2

9.1

Backlog and other (1)

1

 

252.0

 

228.5

23.5

 

205.1

 

181.7

23.4

Total intangible assets (definite-lived)

14

6,324.9

1,192.9

5,132.0

3,021.5

1,049.2

1,972.3

Trade names (indefinite-lived)

269.1

269.1

269.1

269.1

Total

$

6,594.0

$

1,192.9

$

5,401.1

$

3,290.6

$

1,049.2

$

2,241.4

(1) Certain prior period amounts have been reclassified to conform to the current period presentation.

Summary of the Company's indefinite-lived intangible assets

Other than goodwill noted above, the Company’s intangible assets as of March 31, 2026 and December 31, 2025 were as follows:

March 31, 2026

December 31, 2025

Weighted

Gross

  ​ ​ ​

  ​ ​ ​

Net

  ​ ​ ​

Gross

  ​ ​ ​

  ​ ​ ​

Net

Average

Carrying

Accumulated

Carrying

Carrying

Accumulated

Carrying

Life (years)

Amount

Amortization

Amount

Amount

Amortization

Amount

Customer relationships

14

$

3,049.9

$

682.1

$

2,367.8

$

1,841.2

$

635.1

$

1,206.1

Proprietary technology

14

 

2,419.7

 

273.1

2,146.6

 

963.9

 

230.2

733.7

Trade names (1)

22

 

603.3

9.2

594.1

11.3

2.2

9.1

Backlog and other (1)

1

 

252.0

 

228.5

23.5

 

205.1

 

181.7

23.4

Total intangible assets (definite-lived)

14

6,324.9

1,192.9

5,132.0

3,021.5

1,049.2

1,972.3

Trade names (indefinite-lived)

269.1

269.1

269.1

269.1

Total

$

6,594.0

$

1,192.9

$

5,401.1

$

3,290.6

$

1,049.2

$

2,241.4

(1) Certain prior period amounts have been reclassified to conform to the current period presentation.

v3.26.1
Reportable Business Segments (Tables)
3 Months Ended
Mar. 31, 2026
Reportable Business Segments  
Schedule of total sales, intersegment sales and external net sales by segment and a reconciliation by segment of external net sales to segment operating income.

The following table (i) summarizes, by segment, total sales, intersegment sales and external net sales and (ii) reconciles each segment’s external net sales to their respective segment operating income, including segment operating expenses, for the three months ended March 31, 2026 and 2025:

Communications Solutions

Harsh Environment Solutions

Interconnect and Sensor Systems

Total

Three Months Ended March 31, 2026

Total sales

$

4,561.0

$

1,725.4

$

1,413.3

$

7,699.7

Less: Intersegment sales

26.3

32.3

21.0

79.6

External net sales

4,534.7

1,693.1

1,392.3

7,620.1

Less: Segment operating expenses (1)

3,145.3

1,219.8

1,110.6

5,475.7

Segment operating income

$

1,389.4

$

473.3

$

281.7

$

2,144.4

Three Months Ended March 31, 2025

Total sales

$

2,429.5

$

1,295.0

$

1,138.9

$

4,863.4

Less: Intersegment sales

15.8

26.8

9.8

52.4

External net sales

2,413.7

1,268.2

1,129.1

4,811.0

Less: Segment operating expenses (1)

1,752.9

957.0

924.6

3,634.5

Segment operating income

$

660.8

$

311.2

$

204.5

$

1,176.5

_____________________________

(1)The aggregated amount is comprised of cost of sales, selling, general and administrative expenses, and other segment related expenses.

Schedule of the reconciliation of segment operating income to consolidated income before income taxes

Three Months Ended

March 31, 

2026

2025

Total segment operating income

$

2,144.4

$

1,176.5

Corporate / Other:

Stock-based compensation expense

(34.2)

(26.6)

Amortization of acquisition-related inventory step-up costs

(132.0)

(60.9)

Acquisition-related expenses

(116.9)

(44.0)

Other operating expenses

(29.5)

(20.2)

Operating income

1,831.8

1,024.8

Interest expense

(207.9)

(76.5)

Other income (expense), net

21.8

14.6

Income before income taxes

$

1,645.7

$

962.9

Schedule of depreciation and amortization expense

  ​ ​ ​

Three Months Ended

March 31, 

2026

2025

Communications Solutions

$

211.3

$

89.8

Harsh Environment Solutions

 

47.9

38.3

Interconnect and Sensor Systems

40.0

34.7

Corporate / Other

186.6

73.5

Total

$

485.8

$

236.3

v3.26.1
Revenue Recognition (Tables)
3 Months Ended
Mar. 31, 2026
Revenue Recognition  
Schedule of disaggregation of net sales

Harsh

Communications

Environment

Interconnect and

Total Reportable

Solutions

Solutions

Sensor Systems

Business Segments

Three Months Ended March 31,

  ​ ​ ​

2026

  ​

2025

  ​ ​ ​

2026

  ​

2025

  ​ ​ ​

2026

  ​

2025

2026

  ​

2025

Net sales by:

Sales channel:

 

End customers and contract manufacturers

 

$

3,197.5

 

$

1,916.7

$

1,231.4

 

$

924.6

 

$

1,334.4

 

$

1,087.6

$

5,763.3

 

$

3,928.9

Distributors and resellers

 

1,337.2

 

497.0

 

461.7

 

343.6

 

57.9

 

41.5

 

1,856.8

 

882.1

$

4,534.7

$

2,413.7

$

1,693.1

$

1,268.2

$

1,392.3

$

1,129.1

$

7,620.1

$

4,811.0

Geography:

United States

$

1,617.2

$

604.8

$

922.3

$

686.4

$

412.3

$

352.4

$

2,951.8

$

1,643.6

China

 

587.4

 

481.8

 

136.1

 

106.2

 

214.5

 

205.9

938.0

793.9

Other foreign locations

 

2,330.1

 

1,327.1

 

634.7

 

475.6

 

765.5

 

570.8

 

3,730.3

2,373.5

$

4,534.7

$

2,413.7

$

1,693.1

$

1,268.2

$

1,392.3

$

1,129.1

$

7,620.1

$

4,811.0

v3.26.1
Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Inventories    
Raw materials and supplies $ 1,666.7 $ 1,413.0
Work in process 1,203.6 960.3
Finished goods 1,216.5 1,051.6
Inventories $ 4,086.8 $ 3,424.9
v3.26.1
Debt, Schedule of Debt (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 22, 2025
Mar. 31, 2026
Mar. 30, 2026
Dec. 31, 2025
Nov. 10, 2025
Jun. 16, 2025
Jun. 12, 2025
Mar. 03, 2025
Debt                
Less: unamortized deferred debt issuance costs   $ (116.4)   $ (99.9)        
Total debt   18,748.9   15,502.0        
Less current portion   2,109.6   937.2        
Total long-term debt   16,639.3   14,564.8        
Total debt, Approximate Fair Value   18,519.6   15,412.8        
Less current portion, Fair Value   2,110.5   935.8        
Long-term debt, Approximate Fair Value   16,409.1   14,477.0        
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]                
Debt                
Less: unamortized deferred debt issuance costs            
The "Revolving Credit Facility"                
Debt                
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   0.0   0.0        
Total debt, Approximate Fair Value   0.0   0.0        
U.S. Commercial Paper Program                
Debt                
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   0.0   0.0        
Total debt, Approximate Fair Value   0.0   0.0        
Euro Commercial Paper Program                
Debt                
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   0.0   0.0        
Total debt, Approximate Fair Value   $ 0.0   0.0        
Delayed Draw Term Loan With 364 Days Term                
Debt                
Maturity term 364 days 364 days            
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 1,534.1   0.0        
Total debt, Approximate Fair Value   $ 1,534.1   0.0        
Delayed Draw Term Loan With 3 Years Term                
Debt                
Maturity term 3 years 3 years            
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 1,534.1   0.0        
Total debt, Approximate Fair Value   $ 1,534.1   $ 0.0        
2.05% Senior Notes due March 2025                
Debt                
Stated interest rate (as a percent)               2.05%
4.750% Senior Notes due March 2026                
Debt                
Stated interest rate (as a percent)   4.75% 4.75% 4.75%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 0.0   $ 349.9        
Total debt, Approximate Fair Value   $ 0.0   $ 350.8        
0.750% Euro Senior Notes due May 2026                
Debt                
Stated interest rate (as a percent)   0.75%   0.75%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 576.9   $ 586.5        
Total debt, Approximate Fair Value   $ 575.5   $ 584.2        
5.050% Senior Notes due April 2027                
Debt                
Stated interest rate (as a percent)   5.05%   5.05%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 700.9   $ 701.2        
Total debt, Approximate Fair Value   705.4   709.8        
Floating Rate Senior Notes Due November 2027                
Debt                
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   500.0   500.0        
Total debt, Approximate Fair Value   $ 499.8   $ 501.0        
3.800% Senior Notes Due November 2027                
Debt                
Stated interest rate (as a percent)   3.80%   3.80% 3.80%      
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 749.6   $ 749.5        
Total debt, Approximate Fair Value   $ 746.0   $ 749.5        
4.375% Senior Notes due June 2028                
Debt                
Stated interest rate (as a percent)   4.375%   4.375%     4.375%  
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 749.5   $ 749.5        
Total debt, Approximate Fair Value   $ 752.1   $ 757.5        
3.125% Senior Notes due June 2032                
Debt                
Stated interest rate (as a percent)   3.125%   3.125%   3.125%    
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 687.6   $ 699.1        
Total debt, Approximate Fair Value   $ 671.7   $ 697.2        
4.400% Senior Notes Due February 2033                
Debt                
Stated interest rate (as a percent)   4.40%   4.40% 4.40%      
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 1,248.6   $ 1,248.5        
Total debt, Approximate Fair Value   $ 1,221.0   $ 1,236.4        
5.050% Senior Notes due April 2029                
Debt                
Stated interest rate (as a percent)   5.05%   5.05%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 449.7   $ 449.7        
Total debt, Approximate Fair Value   $ 459.4   $ 463.0        
2.000% Euro Senior Notes due October 2028                
Debt                
Stated interest rate (as a percent)   2.00%   2.00%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 576.1   $ 585.8        
Total debt, Approximate Fair Value   $ 559.4   $ 578.2        
3.900% Senior Notes Due November 2028                
Debt                
Stated interest rate (as a percent)   3.90%   3.90% 3.90%      
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 749.3   $ 749.2        
Total debt, Approximate Fair Value   $ 744.2   $ 747.7        
4.350% Senior Notes due June 2029                
Debt                
Stated interest rate (as a percent)   4.35%   4.35%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 499.9   $ 499.8        
Total debt, Approximate Fair Value   $ 501.2   $ 502.4        
2.800% Senior Notes due February 2030                
Debt                
Stated interest rate (as a percent)   2.80%   2.80%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 899.7   $ 899.7        
Total debt, Approximate Fair Value   $ 848.0   $ 853.9        
4.125% Senior Notes Due November 2030                
Debt                
Stated interest rate (as a percent)   4.125%   4.125% 4.125%      
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 999.0   $ 999.0        
Total debt, Approximate Fair Value   $ 986.0   993.8        
3.625% Euro Senior Notes due March 2031                
Debt                
Stated interest rate (as a percent)   3.625% 3.625%          
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 575.9   0.0        
Total debt, Approximate Fair Value   $ 577.7   $ 0.0        
2.200% Senior Notes due September 2031                
Debt                
Stated interest rate (as a percent)   2.20%   2.20%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 748.5   $ 748.4        
Total debt, Approximate Fair Value   $ 665.3   $ 669.4        
5.250% Senior Notes due April 2034                
Debt                
Stated interest rate (as a percent)   5.25%   5.25%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 599.5   $ 599.5        
Total debt, Approximate Fair Value   $ 613.1   $ 623.0        
5.000% Senior Notes due January 2035                
Debt                
Stated interest rate (as a percent)   5.00%   5.00%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 746.8   $ 746.7        
Total debt, Approximate Fair Value   $ 749.2   $ 762.9        
4.625% Senior Notes Due February 2036                
Debt                
Stated interest rate (as a percent)   4.625%   4.625% 4.625%      
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 1,598.4   $ 1,598.3        
Total debt, Approximate Fair Value   $ 1,547.4   $ 1,569.1        
5.375% Senior Notes due November 2054                
Debt                
Stated interest rate (as a percent)   5.375%   5.375%        
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 492.5   $ 492.5        
Total debt, Approximate Fair Value   $ 477.9   $ 485.8        
5.300% Senior Notes Due November 2055                
Debt                
Stated interest rate (as a percent)   5.30%   5.30% 5.30%      
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   $ 1,647.3   $ 1,647.3        
Total debt, Approximate Fair Value   1,549.7   1,575.4        
Other Debt                
Debt                
Debt carrying amount, net of unamortized discount or premium before deferred debt issuance costs   1.4   1.8        
Total debt, Approximate Fair Value   $ 1.4   $ 1.8        
v3.26.1
Debt, Revolving Credit Facility (Details) - The "Revolving Credit Facility" - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Mar. 21, 2024
Debt      
Maximum borrowing capacity     $ 3,000.0
Borrowings under the Revolving Credit Facility $ 0.0 $ 0.0  
Debt Instrument, covenant compliance On March 31, 2026, the Company was in compliance with the financial covenants under the Revolving Credit Facility    
v3.26.1
Debt, Commercial Paper (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
subsidiary
Dec. 31, 2025
USD ($)
Commercial Paper Programs and Revolving Credit Facility    
Debt    
Maximum borrowing capacity $ 3,000.0  
U.S. Commercial Paper Program    
Debt    
Maximum borrowing capacity 3,000.0  
Debt carrying amount, net of unamortized discount before deferred debt issuance costs $ 0.0 $ 0.0
U.S. Commercial Paper Program | Maximum [Member]    
Debt    
Maturity term 397 days  
Euro Commercial Paper Program    
Debt    
Number of wholly-owned subsidiaries that entered into a euro-commercial paper program | subsidiary 1  
Maximum borrowing capacity $ 2,000.0  
Proceeds from issuance of commercial paper 0.0  
Debt carrying amount, net of unamortized discount before deferred debt issuance costs $ 0.0 $ 0.0
Euro Commercial Paper Program | Maximum [Member]    
Debt    
Maturity term 183 days  
v3.26.1
Debt, Delayed Draw Term Loans (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 09, 2026
Aug. 22, 2025
Mar. 31, 2026
Nov. 13, 2025
Delayed Draw Term Loan        
Debt        
Credit facility, covenant compliance     On March 31, 2026, the Company was in compliance with the financial covenants under each Delayed Draw Term Loan.  
Delayed Draw Term Loan With 364 Days Term        
Debt        
Delayed draw term loans $ 1,534.1      
Maturity term   364 days 364 days  
Debt maturity date     Jan. 08, 2027  
Effective interest rate     4.42%  
Debt instrument, principal amount   $ 2,000.0   $ 1,534.1
Delayed Draw Term Loan With 3 Years Term        
Debt        
Delayed draw term loans $ 1,534.1      
Maturity term   3 years 3 years  
Debt maturity date     Jan. 09, 2029  
Effective interest rate     4.54%  
Debt instrument, principal amount   $ 2,000.0   $ 1,534.1
v3.26.1
Debt, U.S. Senior Notes (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 30, 2026
Nov. 10, 2025
Jun. 12, 2025
Mar. 03, 2025
Mar. 31, 2026
Dec. 31, 2025
U.S. Senior Notes            
Debt            
Redemption price as a percentage of principal amount         100.00%  
4.750% Senior Notes due March 2026            
Debt            
Repayments of Senior Notes $ 350.0          
Stated interest rate (as a percent) 4.75%       4.75% 4.75%
Debt maturity date Mar. 30, 2026          
2.05% Senior Notes due March 2025            
Debt            
Repayments of Senior Notes       $ 400.0    
Stated interest rate (as a percent)       2.05%    
Debt maturity date       Mar. 01, 2025    
4.375% Senior Notes due June 2028            
Debt            
Stated interest rate (as a percent)     4.375%   4.375% 4.375%
Debt maturity date     Jun. 12, 2028      
Debt instrument, principal amount     $ 750.0      
Floating Rate Senior Notes Due November 2027            
Debt            
Debt maturity date   Nov. 15, 2027        
Debt instrument, principal amount   $ 500.0        
Basis spread on variable rate   0.53%        
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   us-gaap:SecuredOvernightFinancingRateSofrMember        
3.800% Senior Notes Due November 2027            
Debt            
Stated interest rate (as a percent)   3.80%     3.80% 3.80%
Debt maturity date   Nov. 15, 2027        
Debt instrument, principal amount   $ 750.0        
3.900% Senior Notes Due November 2028            
Debt            
Stated interest rate (as a percent)   3.90%     3.90% 3.90%
Debt maturity date   Nov. 15, 2028        
Debt instrument, principal amount   $ 750.0        
4.125% Senior Notes Due November 2030            
Debt            
Stated interest rate (as a percent)   4.125%     4.125% 4.125%
Debt maturity date   Nov. 15, 2030        
Debt instrument, principal amount   $ 1,000.0        
4.400% Senior Notes Due February 2033            
Debt            
Stated interest rate (as a percent)   4.40%     4.40% 4.40%
Debt maturity date   Feb. 15, 2033        
Debt instrument, principal amount   $ 1,250.0        
4.625% Senior Notes Due February 2036            
Debt            
Stated interest rate (as a percent)   4.625%     4.625% 4.625%
Debt maturity date   Feb. 15, 2036        
Debt instrument, principal amount   $ 1,600.0        
5.300% Senior Notes Due November 2055            
Debt            
Stated interest rate (as a percent)   5.30%     5.30% 5.30%
Debt maturity date   Nov. 15, 2055        
Debt instrument, principal amount   $ 1,650.0        
5.050% Senior Notes due April 2027            
Debt            
Stated interest rate (as a percent)         5.05% 5.05%
5.050% Senior Notes due April 2029            
Debt            
Stated interest rate (as a percent)         5.05% 5.05%
5.250% Senior Notes due April 2034            
Debt            
Stated interest rate (as a percent)         5.25% 5.25%
5.000% Senior Notes due January 2035            
Debt            
Stated interest rate (as a percent)         5.00% 5.00%
5.375% Senior Notes due November 2054            
Debt            
Stated interest rate (as a percent)         5.375% 5.375%
v3.26.1
Debt, Euro Senior Notes (Details)
€ in Millions, $ in Millions
3 Months Ended
Mar. 30, 2026
USD ($)
Jun. 16, 2025
USD ($)
Mar. 31, 2026
EUR (€)
loan
Mar. 30, 2026
EUR (€)
Dec. 31, 2025
Jun. 16, 2025
EUR (€)
3.125% Senior Notes due June 2032            
Debt            
Debt instrument, principal amount   $ 685.9       € 600.0
Stated interest rate (as a percent)   3.125% 3.125%   3.125% 3.125%
Debt maturity date   Jun. 16, 2032        
Euro Notes            
Debt            
Redemption price as a percentage of principal amount     100.00%      
Number of outstanding notes | loan     2      
3.625% Euro Senior Notes due March 2031            
Debt            
Debt instrument, principal amount $ 586.7     € 500.0    
Stated interest rate (as a percent) 3.625%   3.625% 3.625%    
Debt maturity date Mar. 30, 2031          
0.750% Euro Senior Notes Due May 2026            
Debt            
Debt instrument, principal amount     € 500.0      
Stated interest rate (as a percent) 0.75%   0.75% 0.75%    
Debt maturity date     May 04, 2026      
2.000% Euro Senior Notes due October 2028            
Debt            
Debt instrument, principal amount     € 500.0      
Stated interest rate (as a percent)     2.00%      
Debt maturity date     Oct. 08, 2028      
v3.26.1
Fair Value Measurements (Details)
$ in Millions
1 Months Ended 3 Months Ended
Aug. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
contract
Mar. 31, 2026
USD ($)
Fair value of assets and liabilities measured on recurring basis      
Cumulative loss before tax   $ 88.0  
Cumulative after-tax loss   $ 67.4  
Net Investment Hedging [Member]      
Fair value of assets and liabilities measured on recurring basis      
Number of foreign exchange forward contracts | contract   0  
Cash Flow Hedging [Member]      
Fair value of assets and liabilities measured on recurring basis      
Number of foreign exchange forward contracts | contract   0  
Treasury Lock With 10 Year Term | Cash Flow Hedging [Member]      
Fair value of assets and liabilities measured on recurring basis      
Aggregate value of net derivative instrument $ 1,500.0    
Derivative instruments period (in years) 10 years    
Treasury Lock With 30 Year Term | Cash Flow Hedging [Member]      
Fair value of assets and liabilities measured on recurring basis      
Aggregate value of net derivative instrument $ 1,000.0    
Derivative instruments period (in years) 30 years    
4.625% Senior Notes Due February 2036      
Fair value of assets and liabilities measured on recurring basis      
Stated interest rate (as a percent)   4.625%  
5.300% Senior Notes Due November 2055      
Fair value of assets and liabilities measured on recurring basis      
Stated interest rate (as a percent)   5.30%  
Fair Value, Recurring [Member]      
Fair value of assets and liabilities measured on recurring basis      
Short-term investments   $ 303.6 $ 455.1
Long-term investments   0.2 0.4
Forward contracts   0.3 (12.5)
Redeemable noncontrolling interests   (9.3) (9.1)
Total asset   294.8 433.9
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]      
Fair value of assets and liabilities measured on recurring basis      
Short-term investments   0.0 0.0
Long-term investments   0.0 0.0
Forward contracts   0.0 0.0
Redeemable noncontrolling interests   0.0 0.0
Total asset   0.0 0.0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]      
Fair value of assets and liabilities measured on recurring basis      
Short-term investments   303.6 455.1
Long-term investments   0.2 0.4
Forward contracts   0.3 (12.5)
Redeemable noncontrolling interests   0.0 0.0
Total asset   304.1 443.0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]      
Fair value of assets and liabilities measured on recurring basis      
Short-term investments   0.0 0.0
Long-term investments   0.0 0.0
Forward contracts   0.0 0.0
Redeemable noncontrolling interests   (9.3) (9.1)
Total liability   $ (9.3) $ (9.1)
v3.26.1
Income Taxes, Provision and Effective tax rate impacts (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Income Taxes    
Provision for income taxes $ (702.4) $ (218.7)
Effective tax rate (as a percent) 42.70% 22.70%
Excess tax benefit from option exercises $ 50.9 $ 20.1
Excess tax benefits related to stock-based compensation (as a percent) 3.10% 2.10%
Impact of acquisition-related expenses on the effective tax rate 1.20% 0.30%
Unfavorable determinations received from relevant tax authorities $ 130.0  
Additional tax obligations $ 160.0  
Accruals effect of increasing effective tax rate related to the additional tax obligations 17.60%  
v3.26.1
Income Taxes, Unrecognized tax benefits (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Income Taxes      
Amount for unrecognized tax benefits, including penalties and interest, which if recognized would impact the effective tax rate $ 571.5    
Unrecognized tax benefits, anticipated adjustment for changing facts and circumstances, over the next twelve month period 239.5    
Accrued taxes 230.0    
Additional accrued taxes $ 130.0   $ 100.0
Effective tax rate (as a percent) 42.70% 22.70%  
Additional tax obligations $ 160.0    
v3.26.1
Stockholders Equity and Noncontrolling Interests (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Increase (Decrease) In Equity    
Balance at beginning of period $ 13,500.4 $ 9,847.4
Redeemable noncontrolling interest, balance at beginning of period 9.3  
Net income 943.3 743.9
Other comprehensive income (loss) (13.3) 72.6
Acquisitions resulting in noncontrolling interest 6.9  
Purchase of treasury stock (178.0) (180.9)
Retirement of treasury stock 0.0 0.0
Stock options exercised 96.3 53.1
Dividends declared (307.4) (199.6)
Stock-based compensation expense 34.2 26.6
Balance at end of period 14,082.4 $ 10,363.1
Redeemable noncontrolling interest, balance at end of period $ 9.1  
Dividends [Abstract]    
Dividends declared per share (in dollars per share) $ 0.25 $ 0.165
Redeemable Non-controlling Interests    
Increase (Decrease) In Equity    
Redeemable noncontrolling interest, balance at beginning of period $ 9.3 $ 8.7
Net income, redeemable non-controlling interest   0.3
Redeemable non-controlling interest, other comprehensive income (loss) (0.2) 0.3
Redeemable noncontrolling interest, balance at end of period $ 9.1 $ 9.3
Common Stock    
Increase (Decrease) In Equity    
Balance (in shares) 1,228.9 1,212.9
Balance at beginning of period $ 1.2 $ 1.2
Retirement of treasury stock $ 0.0 $ 0.0
Retirement of treasury stock (in shares) 0.0 (2.7)
Stock options exercised (in shares) 3.3 2.2
Stock options exercised $ 0.0 $ 0.0
Balance (in shares) 1,232.2 1,212.4
Balance at end of period $ 1.2 $ 1.2
Treasury Stock    
Increase (Decrease) In Equity    
Balance (in shares) (2.4) (3.6)
Balance at beginning of period $ (195.8) $ (199.7)
Purchase of treasury stock $ (178.0) $ (180.9)
Purchase of treasury stock (in shares) (1.3) (2.7)
Retirement of treasury stock $ 0.0 $ 180.9
Retirement of treasury stock (in shares) 0.0 2.7
Stock options exercised (in shares) 0.8 0.5
Stock options exercised $ 63.8 $ 25.7
Balance at end of period $ (310.0) $ (174.0)
Balance (in shares) (2.9) (3.1)
Additional Paid-In Capital    
Increase (Decrease) In Equity    
Balance at beginning of period $ 4,232.9 $ 3,601.8
Stock options exercised 80.3 43.8
Stock-based compensation expense 34.2 26.6
Balance at end of period 4,347.4 3,672.2
Retained Earnings    
Increase (Decrease) In Equity    
Balance at beginning of period 9,854.3 7,105.0
Net income 933.0 737.8
Retirement of treasury stock 0.0 (180.9)
Stock options exercised (47.8) (16.4)
Dividends declared (307.4) (199.6)
Balance at end of period 10,432.1 7,445.9
Accumulated Other Comprehensive Loss    
Increase (Decrease) In Equity    
Balance at beginning of period (479.5) (716.3)
Other comprehensive income (loss) (14.4) 72.2
Balance at end of period (493.9) (644.1)
Non-controlling Interests    
Increase (Decrease) In Equity    
Balance at beginning of period 87.3 55.4
Net income 10.3 6.1
Other comprehensive income (loss) 1.1 0.4
Acquisitions resulting in noncontrolling interest 6.9  
Balance at end of period $ 105.6 $ 61.9
v3.26.1
Stockholders' Equity and Noncontrolling Interests, Authorized Shares for Issuance and Stock Repurchase (Details) - USD ($)
shares in Millions, $ in Millions
1 Months Ended 3 Months Ended
Apr. 23, 2024
Apr. 28, 2026
Mar. 31, 2026
Mar. 31, 2025
Apr. 29, 2026
Stockholders' Equity          
Payments for shares repurchased (in dollars)     $ 178.0 $ 180.9  
2024 Stock Repurchase Program          
Stockholders' Equity          
Value of shares authorized to be repurchased (in dollars) $ 2,000.0        
Repurchase of stock program, period 3 years        
Share repurchase program, expiration date Apr. 28, 2027        
Number of shares repurchased     1.3    
Payments for shares repurchased (in dollars)     $ 178.0    
Subsequent Events | 2024 Stock Repurchase Program          
Stockholders' Equity          
Number of shares repurchased   0.3      
Payments for shares repurchased (in dollars)   $ 44.2      
Value of shares remaining that may be repurchased under the stock repurchase program (in dollars)         $ 648.8
v3.26.1
Stockholders' Equity and Noncontrolling Interests, Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Sep. 30, 2025
Mar. 31, 2025
Stockholders' Equity and Noncontrolling Interests        
Dividends declared per share (in dollars per share) $ 0.25     $ 0.165
Dividends declared $ 307.4     $ 199.6
Dividends paid (including those declared in the prior year) $ 306.7     $ 199.5
O 2025 Q3 Dividends        
Stockholders' Equity and Noncontrolling Interests        
Dividends declared per share (in dollars per share)     $ 0.165  
O 2025 Q4 Dividends        
Stockholders' Equity and Noncontrolling Interests        
Dividends declared per share (in dollars per share)   $ 0.25    
v3.26.1
Stock-Based Compensation, Stock-based Comp Expense (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Stock-Based Compensation    
Expense incurred for stock-based compensation plans $ 34.2 $ 26.6
Recognized tax benefit related to stock-based compensation 54.7 23.0
Excess tax benefit from option exercises $ 50.9 $ 20.1
v3.26.1
Stock-Based Compensation, Stock Options (Details) - shares
3 Months Ended
May 19, 2021
Mar. 31, 2026
May 18, 2021
2009 Employee Option Plan      
Stock-Based Compensation      
Additional shares available for the granting of stock options   0  
Options ratable vesting period   5 years  
Options exercisable period   10 years  
2017 Option Plan      
Stock-Based Compensation      
Additional shares available for the granting of stock options 80,000,000    
Number of shares originally authorized for issuance of stock options under stock option plan     120,000,000
Remaining shares available for the granting of stock options under plan   47,400,531  
Options ratable vesting period   5 years  
Options exercisable period   10 years  
v3.26.1
Stock-Based Compensation, Stock Option Activity (Details) - Stock Options - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Stock option activity    
Options outstanding at the beginning of the period (in shares) 88,821,121  
Options granted (in shares) 41,924  
Options exercised (in shares) (4,082,462)  
Options forfeited (in shares) (67,835)  
Options outstanding at the end of the period (in shares) 84,712,748 88,821,121
Vested and non-vested options expected to vest at the end of the period (in shares) 83,146,659  
Exercisable at the end of the period (in shares) 55,722,782  
Weighted Average Exercise Price    
Weighted average exercise price, options outstanding at the beginning of the period (in dollars per share) $ 36.62  
Weighted average exercise price, options granted (in dollars per share) 138.11  
Weighted average exercise price, options exercised (in dollars per share) 23.52  
Weighted average exercise price, options forfeited (in dollars per share) 53.92  
Weighted average exercise price, options outstanding at the end of the period (in dollars per share) 37.29 $ 36.62
Weighted average exercise price, vested and non-vested options expected to vest (in dollars per share) 36.8  
Weighted average exercise price, exercisable (in dollars per share) $ 27.14  
Weighted Average Remaining Contractual Term    
Weighted average remaining contractual term of options outstanding 5 years 3 months 14 days 5 years 5 months 4 days
Weighted average remaining contractual term of options vested options and non-vested expected to vest 5 years 2 months 26 days  
Weighted average remaining contractual term of options exercisable 4 years 1 month 13 days  
Aggregate Intrinsic Value    
Aggregate intrinsic value of options outstanding $ 7,545.2 $ 8,753.6
Aggregate intrinsic value of options, vested and non-vested options expected to vest 7,446.0  
Aggregate intrinsic value of options exercisable $ 5,528.2  
v3.26.1
Stock-Based Compensation, Non-Vested Stock Option Activity (Details) - Stock Options
3 Months Ended
Mar. 31, 2026
$ / shares
shares
Status of the Company's non-vested options and changes during the year  
Non-vested options at the beginning of the period (in shares) | shares 29,426,936
Non-vested options, options granted (in shares) | shares 41,924
Non-vested options, options vested (in shares) | shares (411,059)
Non-vested options, options forfeited (in shares) | shares (67,835)
Non-vested options at the end of the period (in shares) | shares 28,989,966
Weighted Average Fair Value at Grant Date  
Weighted average fair value at the grant date, Non-vested options at the beginning of the period (in dollars per share) | $ / shares $ 15.58
Weighted average fair value at grant date, options granted (in dollars per share) | $ / shares 37.69
Weighted average fair value at grant date, options vested (in dollars per share) | $ / shares 11.68
Weighted average fair value at grant date, options forfeited (in dollars per share) | $ / shares 14.88
Weighted average fair value at the grant date, Non-vested options at the end of the period (in dollars per share) | $ / shares $ 15.67
v3.26.1
Stock-Based Compensation, Option Plans (Details) - Stock Options - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Stock-Based Compensation    
Total intrinsic value of stock options exercised (in dollars) $ 504.4 $ 140.3
Total fair value of stock options vested (in dollars) 4.8 $ 2.3
Total compensation cost related to non-vested options not yet recognized (in dollars) $ 324.4  
Weighted average expected amortization period 3 years 3 months 10 days  
v3.26.1
Stock-Based Compensation, Restricted Share Plan (Details) - Restricted Stock [Member] - 2024 Directors Restricted Stock Plan - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
May 16, 2024
Stock-Based Compensation      
Total shares available for granting under plan 461,092   500,000
Restricted share activity      
Restricted shares outstanding at the beginning of the period (in shares) 16,520    
Restricted shares granted (in shares) 548    
Restricted shares outstanding at the end of the period (in shares) 17,068 16,520  
Fair value at grant date, restricted shares outstanding at the beginning of the period (in dollars per share) $ 86.88    
Fair value of restricted shares granted (in dollars per share) 136.25    
Fair value at grant date, restricted shares outstanding at the end of the period (in dollars per share) $ 88.47 $ 86.88  
Weighted Average Remaining Amortization Term (in years) 1 month 17 days 4 months 13 days  
Total compensation cost related to non-vested restricted shares not yet recognized (in dollars) $ 0.2    
v3.26.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Earnings Per Share    
Net Income (Loss) $ 933.0 $ 737.8
Weighted average common shares outstanding - Basic (in shares) 1,228.9 1,209.8
Effect of dilutive stock options (in shares) 60.8 56.4
Weighted average common shares outstanding - Diluted (in shares) 1,289.7 1,266.2
Net income attributable to Amphenol Corporation per common share - Basic    
Net income attributable to Amphenol Corporation per common share - Basic (in dollars per share) $ 0.76 $ 0.61
Net income attributable to Amphenol Corporation per common share - Diluted    
Net income attributable to Amphenol Corporation per common share - Diluted (in dollars per share) $ 0.72 $ 0.58
Anti-dilutive common shares    
Anti-dilutive stock options, excluded from the computations of earnings per share (in shares) 0.0 8.2
v3.26.1
Benefit Plans and Other Postretirement Benefits, Net pension expense (Details) - Pension Plan - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Components of net pension expense:    
Service cost $ 3.3 $ 0.8
Interest cost 12.5 5.8
Expected return on plan assets (13.8) (6.6)
Amortization of prior service cost 0.3 0.3
Amortization of net actuarial losses 0.7 0.8
Net pension (income) expense 3.0 $ 1.1
UNITED STATES    
Defined Benefit Plan Disclosure    
Estimated future employer contribution in fiscal year $ 0.0  
v3.26.1
Benefit Plans and Other Postretirement Benefits, Defined contribution plans (Details) - UNITED STATES - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Defined Contribution Plan Disclosure [Line Items]    
Contributions to U.S. defined contribution plans by the Company, maximum percentage of eligible compensation 7.00% 7.00%
Matching contributions to U.S. defined contribution plans by the Company $ 14.3 $ 10.6
v3.26.1
Acquisitions (Details)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Jan. 09, 2026
USD ($)
Mar. 31, 2026
USD ($)
agreement
$ / shares
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
$ / shares
Dec. 31, 2025
USD ($)
agreement
Acquisitions          
Purchase price, net of cash acquired   $ 10,591.8   $ 2,172.2  
Acquisition-related expenses   116.9   44.0  
Goodwill   17,542.9 $ 17,542.9   $ 10,575.4
Amortization of Inventory step-up costs recorded to Cost of Sales          
Acquisitions          
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales   132.0      
Communications Solutions          
Acquisitions          
Goodwill   10,840.6 10,840.6   $ 3,858.6
Harsh Environment Solutions          
Acquisitions          
Number of acquisitions | agreement         3
Goodwill   4,269.1 4,269.1   $ 4,270.2
Interconnect and Sensor Systems          
Acquisitions          
Number of acquisitions | agreement         1
Goodwill   2,433.2 2,433.2   $ 2,446.6
2026 Acquisitions          
Acquisitions          
Acquisition-related expenses   248.9      
Acquisition-related expenses, net of tax   $ 200.6      
Acquisition-related expenses per diluted share | $ / shares   $ 0.16      
CommScope's Connectivity and Cable Solutions Business          
Acquisitions          
Business acquisition, effective date Jan. 09, 2026        
Aggregate purchase price $ 10,592.9        
Total acquisition-related expenses   $ 222.3      
Total acquisition-related expenses, net of tax   181.0      
Acquisition-related expenses   $ 90.3      
Acquisition-related expenses per diluted share | $ / shares   $ 0.14      
Net sales     871.5    
Net loss     9.0    
Net loss excludes interest expense and external transaction costs     155.5    
Net loss excludes interest expense and external transaction costs, net of tax     119.1    
Goodwill 6,978.4        
Definite-lived intangible assets $ 3,306.0        
Finite-lived acquired intangible assets weighted-average useful life 16 years        
Goodwill deductible for tax purposes $ 0.0        
CommScope's Connectivity and Cable Solutions Business | Transaction expenses          
Acquisitions          
Total acquisition-related expenses   $ 66.8      
CommScope's Connectivity and Cable Solutions Business | Inventory step-up costs          
Acquisitions          
Total acquisition-related expenses   132.0      
CommScope's Connectivity and Cable Solutions Business | Acquired backlog          
Acquisitions          
Total acquisition-related expenses   23.5      
CommScope's Connectivity and Cable Solutions Business | Pro forma          
Acquisitions          
Total acquisition-related expenses       243.2  
Total acquisition-related expenses, net of tax       $ 201.9  
Acquisition-related expenses per diluted share | $ / shares       $ 0.16  
CommScope's Connectivity and Cable Solutions Business | Pro forma | Transaction expenses          
Acquisitions          
Total acquisition-related expenses       $ 87.7  
CommScope's Connectivity and Cable Solutions Business | Pro forma | Inventory step-up costs          
Acquisitions          
Total acquisition-related expenses       132.0  
CommScope's Connectivity and Cable Solutions Business | Pro forma | Acquired backlog          
Acquisitions          
Total acquisition-related expenses       23.5  
CommScope's Connectivity and Cable Solutions Business | Amortization of Inventory step-up costs recorded to Cost of Sales          
Acquisitions          
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales   $ 132.0      
CommScope's Connectivity and Cable Solutions Business | Proprietary technology          
Acquisitions          
Definite-lived intangible assets $ 1,456.0        
Finite-lived acquired intangible assets weighted-average useful life 14 years        
CommScope's Connectivity and Cable Solutions Business | Customer relationships          
Acquisitions          
Definite-lived intangible assets $ 1,211.0        
Finite-lived acquired intangible assets weighted-average useful life 16 years        
CommScope's Connectivity and Cable Solutions Business | Trade names          
Acquisitions          
Definite-lived intangible assets $ 592.0        
Finite-lived acquired intangible assets weighted-average useful life 22 years        
CommScope's Connectivity and Cable Solutions Business | Backlog          
Acquisitions          
Definite-lived intangible assets $ 47.0        
Finite-lived acquired intangible assets weighted-average useful life 6 months        
2025 Acquisitions          
Acquisitions          
Number of acquisitions | agreement         5
Number of acquisitions completed | agreement   2      
Number of acquisitions in process | agreement   3      
Purchase price, net of cash acquired         $ 3,818.6
Acquisition-related expenses       104.9  
Acquisition-related expenses, net of tax       $ 82.1  
Acquisition-related expenses per diluted share | $ / shares       $ 0.06  
Goodwill   $ 2,162.5 2,162.5    
Definite-lived intangible assets   1,203.0      
Goodwill deductible for tax purposes   $ 672.8 $ 672.8    
2025 Acquisitions | Proprietary technology | Minimum          
Acquisitions          
Finite-lived acquired intangible assets weighted-average useful life   10 years      
2025 Acquisitions | Proprietary technology | Maximum          
Acquisitions          
Finite-lived acquired intangible assets weighted-average useful life   15 years      
2025 Acquisitions | Customer relationships | Minimum          
Acquisitions          
Finite-lived acquired intangible assets weighted-average useful life   10 years      
2025 Acquisitions | Customer relationships | Maximum          
Acquisitions          
Finite-lived acquired intangible assets weighted-average useful life   18 years      
2025 Acquisitions | Backlog          
Acquisitions          
Finite-lived acquired intangible assets weighted-average useful life   4 months 24 days      
Andrew Business Acquisition | Amortization of Inventory step-up costs recorded to Cost of Sales          
Acquisitions          
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales       $ 60.9  
Andrew Business Acquisition | Communications Solutions          
Acquisitions          
Number of acquisitions | agreement         1
v3.26.1
Acquisitions, Allocation of Purchase Price (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Jan. 09, 2026
Dec. 31, 2025
ASSETS      
Goodwill $ 17,542.9   $ 10,575.4
CommScope's Connectivity and Cable Solutions Business      
ASSETS      
Cash and cash equivalents   $ 204.4  
Accounts receivable   720.0  
Inventories   656.1  
Prepaid expenses and other current assets   65.1  
Property, plant and equipment, net   319.7  
Goodwill   6,978.4  
Other intangible assets, net   3,306.0  
Other long-term assets   319.8  
Assets acquired   12,569.5  
LIABILITIES      
Accounts payable   416.4  
Accrued salaries, wages and employee benefits   137.6  
Other accrued expenses   265.9  
Deferred income taxes   730.2  
Other long-term liabilities   215.2  
Noncontrolling interests   6.9  
Liabilities assumed   1,772.2  
Net assets acquired   $ 10,797.3  
v3.26.1
Acquisitions, Pro Forma Financial Information (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
2026 Acquisitions    
Pro forma adjustments    
Acquisition related cost per diluted share $ 0.16  
CommScope's Connectivity and Cable Solutions Business    
Pro forma adjustments    
Net sales $ 7,707.7 $ 5,535.1
Net income attributable to Amphenol Corporation $ 1,120.1 $ 496.8
Net income attributable to Amphenol Corporation per common share - Diluted $ 0.87 $ 0.39
Total acquisition-related expenses $ 222.3  
Total acquisition-related expenses, net of tax $ 181.0  
Acquisition related cost per diluted share $ 0.14  
2025 Acquisitions    
Pro forma adjustments    
Acquisition related cost per diluted share   $ 0.06
Pro forma | CommScope's Connectivity and Cable Solutions Business    
Pro forma adjustments    
Total acquisition-related expenses   $ 243.2
Total acquisition-related expenses, net of tax   $ 201.9
Acquisition related cost per diluted share   $ 0.16
v3.26.1
Goodwill and Other Intangible Assets, Goodwill (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
Goodwill  
Goodwill, Beginning Balance $ 10,575.4
Acquisition-related 6,988.7
Foreign currency translation (21.2)
Goodwill, Ending Balance 17,542.9
Communications Solutions  
Goodwill  
Goodwill, Beginning Balance 3,858.6
Acquisition-related 6,983.5
Foreign currency translation (1.5)
Goodwill, Ending Balance 10,840.6
Harsh Environment Solutions  
Goodwill  
Goodwill, Beginning Balance 4,270.2
Acquisition-related 3.9
Foreign currency translation (5.0)
Goodwill, Ending Balance 4,269.1
Interconnect and Sensor Systems  
Goodwill  
Goodwill, Beginning Balance 2,446.6
Acquisition-related 1.3
Foreign currency translation (14.7)
Goodwill, Ending Balance $ 2,433.2
v3.26.1
Goodwill and Other Intangible Assets, Intangible Assets (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Intangible Assets    
Weighted average useful lives of amortizable intangible assets 14 years  
Gross Carrying Amount (definite-lived) $ 6,324.9 $ 3,021.5
Accumulated Amortization 1,192.9 1,049.2
Net Carrying Amount, (definite-lived) 5,132.0 1,972.3
Indefinite-lived trade name intangible asset 269.1 269.1
Intangible assets, gross (excluding goodwill) 6,594.0 3,290.6
Net Carrying Amount, intangible assets $ 5,401.1 2,241.4
Trade names    
Intangible Assets    
Weighted average useful lives of amortizable intangible assets 22 years  
Gross Carrying Amount (definite-lived) $ 603.3 11.3
Accumulated Amortization 9.2 2.2
Net Carrying Amount, (definite-lived) $ 594.1 9.1
Customer relationships    
Intangible Assets    
Weighted average useful lives of amortizable intangible assets 14 years  
Gross Carrying Amount (definite-lived) $ 3,049.9 1,841.2
Accumulated Amortization 682.1 635.1
Net Carrying Amount, (definite-lived) $ 2,367.8 1,206.1
Proprietary technology    
Intangible Assets    
Weighted average useful lives of amortizable intangible assets 14 years  
Gross Carrying Amount (definite-lived) $ 2,419.7 963.9
Accumulated Amortization 273.1 230.2
Net Carrying Amount, (definite-lived) $ 2,146.6 733.7
Backlog and other    
Intangible Assets    
Weighted average useful lives of amortizable intangible assets 1 year  
Gross Carrying Amount (definite-lived) $ 252.0 205.1
Accumulated Amortization 228.5 181.7
Net Carrying Amount, (definite-lived) $ 23.5 $ 23.4
v3.26.1
Goodwill and Other Intangible Assets, Amortization (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Intangible assets    
Amortization expense $ 145.6 $ 47.3
Amortization expense estimated for each of the next five fiscal years    
Remainder of 2026 318.6  
2027 387.0  
2028 379.8  
2029 368.9  
2030 366.2  
2031 359.7  
Backlog    
Intangible assets    
Amortization expense 46.9  
2025 Acquisitions | Backlog    
Intangible assets    
Amortization expense   $ 10.0
2026 Acquisitions | Backlog    
Intangible assets    
Amortization expense $ 46.9  
v3.26.1
Reportable Business Segments, Net sales reconciliation by segment, and net sales to segment operating income reconciliation, including segment operating expenses (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
segment
entity
Mar. 31, 2025
USD ($)
Segment reporting information    
Number of reportable business segments | segment 3  
Number of segment managers | entity 3  
Net sales $ 7,620.1 $ 4,811.0
Operating income 1,831.8 1,024.8
Communications Solutions    
Segment reporting information    
Net sales 4,534.7 2,413.7
Harsh Environment Solutions    
Segment reporting information    
Net sales 1,693.1 1,268.2
Interconnect and Sensor Systems    
Segment reporting information    
Net sales 1,392.3 1,129.1
Operating Segment    
Segment reporting information    
Net sales 7,699.7 4,863.4
Less: Segment operating expenses 5,475.7 3,634.5
Operating income 2,144.4 1,176.5
Operating Segment | Communications Solutions    
Segment reporting information    
Net sales 4,561.0 2,429.5
Less: Segment operating expenses 3,145.3 1,752.9
Operating income 1,389.4 660.8
Operating Segment | Harsh Environment Solutions    
Segment reporting information    
Net sales 1,725.4 1,295.0
Less: Segment operating expenses 1,219.8 957.0
Operating income 473.3 311.2
Operating Segment | Interconnect and Sensor Systems    
Segment reporting information    
Net sales 1,413.3 1,138.9
Less: Segment operating expenses 1,110.6 924.6
Operating income 281.7 204.5
Inter-Segment    
Segment reporting information    
Net sales 79.6 52.4
Inter-Segment | Communications Solutions    
Segment reporting information    
Net sales 26.3 15.8
Inter-Segment | Harsh Environment Solutions    
Segment reporting information    
Net sales 32.3 26.8
Inter-Segment | Interconnect and Sensor Systems    
Segment reporting information    
Net sales $ 21.0 $ 9.8
v3.26.1
Reportable Business Segments, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment reporting information    
Stock-based compensation expense $ (34.2) $ (26.6)
Acquisition-related expenses (116.9) (44.0)
Operating income 1,831.8 1,024.8
Interest expense (207.9) (76.5)
Other income (expense), net 21.8 14.6
Income before income taxes 1,645.7 962.9
Operating Segment    
Segment reporting information    
Operating income 2,144.4 1,176.5
Interest expense (207.9) (76.5)
Other income (expense), net 21.8 14.6
Corporate / Other    
Segment reporting information    
Stock-based compensation expense (34.2) (26.6)
Amortization of acquisition-related inventory step-up costs (132.0) (60.9)
Acquisition-related expenses (116.9) (44.0)
Other operating expenses $ (29.5) $ (20.2)
v3.26.1
Reportable Business Segments, Depreciation & Amortization by Segment (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment reporting information    
Depreciation and amortization $ 485.8 $ 236.3
Communications Solutions    
Segment reporting information    
Depreciation and amortization 211.3 89.8
Harsh Environment Solutions    
Segment reporting information    
Depreciation and amortization 47.9 38.3
Interconnect and Sensor Systems    
Segment reporting information    
Depreciation and amortization 40.0 34.7
Corporate / Other    
Segment reporting information    
Depreciation and amortization $ 186.6 $ 73.5
v3.26.1
Reportable Business Segments, Depreciation & Amortization by Segment Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment reporting information    
Amortization expense pertaining to acquisitions $ 145.6 $ 47.3
Amortization of Inventory step-up costs recorded to Cost of Sales    
Segment reporting information    
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales 132.0  
Andrew Business Acquisition | Amortization of Inventory step-up costs recorded to Cost of Sales    
Segment reporting information    
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales   60.9
Backlog    
Segment reporting information    
Amortization expense pertaining to acquisitions 46.9  
Backlog | 2025 Acquisitions    
Segment reporting information    
Amortization expense pertaining to acquisitions   $ 10.0
Backlog | 2026 Acquisitions    
Segment reporting information    
Amortization expense pertaining to acquisitions $ 46.9  
v3.26.1
Revenue Recognition (Details) - item
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenue recognition    
Remaining performance obligation, expected timing for substantial portion of performance obligations 3 months  
Practical expedient, performance obligation true  
Minimum    
Revenue recognition    
Number of reporting periods that may be extended across for multiple delivery dates 1  
Maximum    
Revenue recognition    
Percentage of net sales recognized over time 5.00% 5.00%
Remaining performance obligation, expected timing for nearly all performance obligations 1 year  
Practical expedient, performance obligation true  
v3.26.1
Revenue Recognition, Disaggregation of Net Sales (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Revenue recognition    
Net sales $ 7,620.1 $ 4,811.0
United States    
Revenue recognition    
Net sales 2,951.8 1,643.6
China    
Revenue recognition    
Net sales 938.0 793.9
Other foreign locations    
Revenue recognition    
Net sales 3,730.3 2,373.5
End customers and contract manufacturers    
Revenue recognition    
Net sales 5,763.3 3,928.9
Distributors and resellers    
Revenue recognition    
Net sales 1,856.8 882.1
Communications Solutions    
Revenue recognition    
Net sales 4,534.7 2,413.7
Communications Solutions | United States    
Revenue recognition    
Net sales 1,617.2 604.8
Communications Solutions | China    
Revenue recognition    
Net sales 587.4 481.8
Communications Solutions | Other foreign locations    
Revenue recognition    
Net sales 2,330.1 1,327.1
Communications Solutions | End customers and contract manufacturers    
Revenue recognition    
Net sales 3,197.5 1,916.7
Communications Solutions | Distributors and resellers    
Revenue recognition    
Net sales 1,337.2 497.0
Harsh Environment Solutions    
Revenue recognition    
Net sales 1,693.1 1,268.2
Harsh Environment Solutions | United States    
Revenue recognition    
Net sales 922.3 686.4
Harsh Environment Solutions | China    
Revenue recognition    
Net sales 136.1 106.2
Harsh Environment Solutions | Other foreign locations    
Revenue recognition    
Net sales 634.7 475.6
Harsh Environment Solutions | End customers and contract manufacturers    
Revenue recognition    
Net sales 1,231.4 924.6
Harsh Environment Solutions | Distributors and resellers    
Revenue recognition    
Net sales 461.7 343.6
Interconnect and Sensor Systems    
Revenue recognition    
Net sales 1,392.3 1,129.1
Interconnect and Sensor Systems | United States    
Revenue recognition    
Net sales 412.3 352.4
Interconnect and Sensor Systems | China    
Revenue recognition    
Net sales 214.5 205.9
Interconnect and Sensor Systems | Other foreign locations    
Revenue recognition    
Net sales 765.5 570.8
Interconnect and Sensor Systems | End customers and contract manufacturers    
Revenue recognition    
Net sales 1,334.4 1,087.6
Interconnect and Sensor Systems | Distributors and resellers    
Revenue recognition    
Net sales $ 57.9 $ 41.5