Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Jan. 31, 2018	Mar. 28, 2018	Jul. 31, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	WALMART INC.
Entity Central Index Key	0000104169
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Jan. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		2,950,696,818
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 114,770,199,895

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Revenues:
Net sales	$ 495,761	$ 481,317	$ 478,614
Membership and other income	4,582	4,556	3,516
Total revenues	500,343	485,873	482,130
Costs and expenses:
Cost of sales	373,396	361,256	360,984
Operating, selling, general and administrative expenses	106,510	101,853	97,041
Operating income	20,437	22,764	24,105
Interest:
Debt	1,978	2,044	2,027
Capital lease and financing obligations	352	323	521
Interest income	(152)	(100)	(81)
Interest, net	2,178	2,267	2,467
Gain (loss) on extinguishment of debt	3,136	0	0
Income before income taxes	15,123	20,497	21,638
Provision for income taxes	4,600	6,204	6,558
Consolidated net income	10,523	14,293	15,080
Consolidated net income attributable to noncontrolling interest	(661)	(650)	(386)
Consolidated net income attributable to Walmart	$ 9,862	$ 13,643	$ 14,694
Net income per common share:
Basic net income per common share attributable to Walmart	$ 3.29	$ 4.40	$ 4.58
Diluted net income per common share attributable to Walmart	$ 3.28	$ 4.38	$ 4.57
Weighted-average common shares outstanding:
Basic	2,995	3,101	3,207
Diluted	3,010	3,112	3,217
Dividends declared per common share	$ 2.04	$ 2.00	$ 1.96

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Consolidated net income	$ 10,523	$ 14,293	$ 15,080
Consolidated net income attributable to noncontrolling interest	(661)	(650)	(386)
Consolidated net income attributable to Walmart	9,862	13,643	14,694
Other comprehensive income (loss), net of income taxes
Currency translation and other	2,540	(3,027)	(5,220)
Unrealized gain on available-for-sale securities	1,501	145	0
Minimum pension liability	147	(397)	86
Other comprehensive income (loss), net of income taxes	4,220	(2,845)	(4,970)
Less other comprehensive income (loss) attributable to noncontrolling interest	(169)	210	541
Other comprehensive income (loss) attributable to Walmart	4,051	(2,635)	(4,429)
Comprehensive income, net of income taxes	14,743	11,448	10,110
Comprehensive (income) loss attributable to noncontrolling interest	(830)	(440)	155
Comprehensive income attributable to Walmart	13,913	11,008	10,265
Net investment hedging
Other comprehensive income (loss), net of income taxes
Derivative instruments	(405)	413	366
Cash flow hedging
Other comprehensive income (loss), net of income taxes
Derivative instruments	$ 437	$ 21	$ (202)

Consolidated Balance Sheets - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Current assets:
Cash and cash equivalents	$ 6,756	$ 6,867
Receivables, net	5,614	5,835
Inventories	43,783	43,046
Prepaid expenses and other	3,511	1,941
Total current assets	59,664	57,689
Property and equipment:
Property and equipment	185,154	179,492
Less accumulated depreciation	(77,479)	(71,782)
Property and equipment, net	107,675	107,710
Property under capital lease and financing obligations:
Property under capital lease and financing obligations	12,703	11,637
Less accumulated amortization	(5,560)	(5,169)
Property under capital lease and financing obligations, net	7,143	6,468
Goodwill	18,242	17,037
Other assets and deferred charges	11,798	9,921
Total assets	204,522	198,825
Current liabilities:
Short-term borrowings	5,257	1,099
Accounts payable	46,092	41,433
Accrued liabilities	22,122	20,654
Accrued income taxes	645	921
Long-term debt due within one year	3,738	2,256
Capital lease and financing obligations due within one year	667	565
Total current liabilities	78,521	66,928
Long-term debt	30,045	36,015
Long-term capital lease and financing obligations	6,780	6,003
Deferred income taxes and other	8,354	9,344
Commitments and contingencies
Equity:
Common stock	295	305
Capital in excess of par value	2,648	2,371
Retained earnings	85,107	89,354
Accumulated other comprehensive loss	(10,181)	(14,232)
Total Walmart shareholders' equity	77,869	77,798
Noncontrolling interest	2,953	2,737
Total equity	80,822	80,535
Total liabilities and equity	$ 204,522	$ 198,825

Consolidated Statement Of Shareholders' Equity and Redeemable Noncontrolling Interest - USD ($) shares in Millions, $ in Millions	Total	Common stock	Capital in excess of par value	Retained earnings	Accumulated other comprehensive income (loss)	Total Walmart shareholders' equity	Noncontrolling interest
Consolidated net income	$ 15,080			$ 14,694		$ 14,694	$ 386
Other comprehensive income (loss), net of income taxes	(4,970)				$ (4,429)	(4,429)	(541)
Balances, in shares at Jan. 31, 2015		3,228
Balances at Jan. 31, 2015	85,937	$ 323	$ 2,462	85,777	(7,168)	81,394	4,543
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(6,294)			(6,294)		(6,294)
Purchase of Company stock (in shares)		(65)
Purchase of Company stock	(4,256)	$ (6)	(102)	(4,148)		(4,256)
Cash dividend declared to noncontrolling interest	(691)						(691)
Other, in shares		(1)
Other	(1,195)	$ 0	(555)	(8)		(563)	(632)
Balances, in shares at Jan. 31, 2016		3,162
Balances at Jan. 31, 2016	83,611	$ 317	1,805	90,021	(11,597)	80,546	3,065
Consolidated net income	14,293			13,643		13,643	650
Other comprehensive income (loss), net of income taxes	(2,845)				(2,635)	(2,635)	(210)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(6,216)			(6,216)		(6,216)
Purchase of Company stock (in shares)		(120)
Purchase of Company stock	(8,276)	$ (12)	(174)	(8,090)		(8,276)
Cash dividend declared to noncontrolling interest	(519)						(519)
Other, in shares		6
Other	487		740	(4)		736	(249)
Balances, in shares at Jan. 31, 2017		3,048
Balances at Jan. 31, 2017	80,535	$ 305	2,371	89,354	(14,232)	77,798	2,737
Consolidated net income	10,523			9,862		9,862	661
Other comprehensive income (loss), net of income taxes	4,220				4,051	4,051	169
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(6,124)			(6,124)		(6,124)
Purchase of Company stock (in shares)		(103)
Purchase of Company stock	(8,204)	$ (10)	(219)	(7,975)		(8,204)
Cash dividend declared to noncontrolling interest	(687)						(687)
Other, in shares		7
Other	559		496	(10)		486	73
Balances, in shares at Jan. 31, 2018		2,952
Balances at Jan. 31, 2018	$ 80,822	$ 295	$ 2,648	$ 85,107	$ (10,181)	$ 77,869	$ 2,953

Consolidated Statement Of Shareholders' Equity and Redeemable Noncontrolling Interest (Parenthetical) - $ / shares	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share	$ 2.04	$ 2.00	$ 1.96

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Cash flows from operating activities:
Consolidated net income	$ 10,523	$ 14,293	$ 15,080
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	10,529	10,080	9,454
Deferred income taxes	(304)	761	(672)
Gain (loss) on extinguishment of debt	3,136	0	0
Other operating activities	1,210	206	1,410
Changes in certain assets and liabilities, net of effects of acquisitions:
Receivables, net	(1,074)	(402)	(19)
Inventories	(140)	1,021	(703)
Accounts payable	4,086	3,942	2,008
Accrued liabilities	928	1,280	1,466
Accrued income taxes	(557)	492	(472)
Net cash provided by operating activities	28,337	31,673	27,552
Cash flows from investing activities:
Payments for property and equipment	(10,051)	(10,619)	(11,477)
Proceeds from the disposal of property and equipment	378	456	635
Proceeds from the disposal of certain operations	1,046	662	246
Purchase of available for sale securities	0	(1,901)	0
Investment and business acquisitions, net of cash acquired	(375)	(2,463)	0
Other investing activities	(58)	(122)	(79)
Net cash used in investing activities	(9,060)	(13,987)	(10,675)
Cash flows from financing activities:
Net change in short-term borrowings	4,148	(1,673)	1,235
Proceeds from issuance of long-term debt	7,476	137	39
Payments of long-term debt	(13,061)	(2,055)	(4,432)
Payment for debt extinguishment or debt prepayment cost	(3,059)	0	0
Dividends paid	(6,124)	(6,216)	(6,294)
Purchase of Company stock	(8,296)	(8,298)	(4,112)
Dividends paid to noncontrolling interest	(690)	(479)	(719)
Purchase of noncontrolling interest	(8)	(90)	(1,326)
Other financing activities	(261)	(398)	(676)
Net cash used in financing activities	(19,875)	(19,072)	(16,285)
Effect of exchange rates on cash and cash equivalents	487	(452)	(1,022)
Net increase (decrease) in cash and cash equivalents	(111)	(1,838)	(430)
Cash and cash equivalents at beginning of year	6,867	8,705	9,135
Cash and cash equivalents at end of year	6,756	6,867	8,705
Supplemental disclosure of cash flow information:
Income taxes paid	6,179	4,507	8,111
Interest paid	$ 2,450	$ 2,351	$ 2,540

Summary of Significant Accounting Policies

12 Months Ended

Jan. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of presentation

Summary of Significant Accounting Policies

General

Walmart Inc. (formerly "Wal-Mart Stores, Inc.") ("Walmart" or the "Company") helps people around the world save money and live better – anytime and anywhere – in retail stores and through eCommerce. Through innovation, the Company is striving to create a customer-centric experience that seamlessly integrates digital and physical shopping into an omni-channel offering that saves time for its customers. Each week, the Company serves nearly 270 million customers who visit its more than 11,700 stores and numerous eCommerce websites under 65 banners in 28 countries. The Company's strategy is to lead on price, invest to differentiate on access, be competitive on assortment and deliver a great experience.

The Company's operations comprise three reportable segments: Walmart U.S., Walmart International and Sam's Club.

Principles of Consolidation

The Consolidated Financial Statements include the accounts of Walmart and its subsidiaries as of and for the fiscal years ended January 31, 2018 ("fiscal 2018"), January 31, 2017 ("fiscal 2017") and January 31, 2016 ("fiscal 2016"). All material intercompany accounts and transactions have been eliminated in consolidation. The Company consolidates variable interest entities where it has been determined that the Company is the primary beneficiary of those entities' operations. Investments in unconsolidated affiliates, which are 50% or less owned and do not otherwise meet consolidation requirements, are accounted for primarily using the equity method. These equity method investments are immaterial to the Company's Consolidated Financial Statements.

The Company's Consolidated Financial Statements are based on a fiscal year ending on January 31 for the United States ("U.S.") and Canadian operations. The Company consolidates all other operations generally using a one-month lag and based on a calendar year. There were no significant intervening events during the month of January 2018 related to the operations consolidated using a lag that materially affected the Consolidated Financial Statements.

Use of Estimates

The Consolidated Financial Statements have been prepared in conformity with U.S. generally accepted accounting principles. Those principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities. Management's estimates and assumptions also affect the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates.

Cash and Cash Equivalents

The Company considers investments with a maturity when purchased of three months or less to be cash equivalents. All credit card, debit card and electronic transfer transactions that process in less than seven days are classified as cash and cash equivalents. The amounts due from banks for these transactions classified as cash and cash equivalents totaled $1.6 billion and $1.5 billion at January 31, 2018 and 2017, respectively. In addition, cash and cash equivalents included restricted cash of $300 million and $265 million at January 31, 2018 and 2017, respectively, which was primarily related to cash collateral holdings from various counterparties, as required by certain derivative and trust agreements.

The Company's cash balances are held in various locations around the world. Substantially all of the Company's $6.8 billion of cash and cash equivalents at January 31, 2018, was held outside of the U.S. Of the Company's $6.9 billion of cash and cash equivalents at January 31, 2017, $5.9 billion was held outside of the U.S. Cash and cash equivalents held outside of the U.S. are generally utilized to support liquidity needs in the Company's non-U.S. operations.

The Company uses intercompany financing arrangements in an effort to ensure cash can be made available in the country in which it is needed with the minimum cost possible. Management does not believe it will be necessary to repatriate earnings held outside of the U.S. and anticipates the Company's domestic liquidity needs will be met through cash flows provided by domestic operating activities, supplemented with long-term debt and short-term borrowings. Accordingly, the Company intends, with only certain exceptions, to continue to indefinitely reinvest the Company's earnings held outside of the U.S. in its foreign operations. As part of the U.S. tax reform enacted on December 22, 2017, the Company is currently assessing the impact of the new legislation, which can in turn, impact its assertion regarding any potential future repatriation. If the Company's intentions with respect to reinvestment were to change, most of the amounts held within the Company's foreign operations could be repatriated to the U.S., although any repatriation under new U.S. tax laws could be subject to incremental withholding taxes. The Company does not expect current local laws, other existing limitations or potential taxes on anticipated future repatriations of earnings held outside of the U.S. to have a material effect on the Company's overall liquidity, financial condition or results of operations.

As of January 31, 2018 and 2017, cash and cash equivalents of approximately $1.4 billion and $1.0 billion, respectively, may not be freely transferable to the U.S. due to local laws or other restrictions.

Receivables

Receivables are stated at their carrying values, net of a reserve for doubtful accounts. Receivables consist primarily of amounts due from:


•	insurance companies resulting from pharmacy sales;


•	banks for customer credit and debit cards and electronic bank transfers that take in excess of seven days to process;


•	suppliers for marketing or incentive programs; and


•	real estate transactions.

Inventories

The Company values inventories at the lower of cost or market as determined primarily by the retail inventory method of accounting, using the last-in, first-out ("LIFO") method for Walmart U.S. segment's inventories. The inventory at the Walmart International segment is valued primarily by the retail inventory method of accounting, using the first-in, first-out ("FIFO") method. The retail inventory method of accounting results in inventory being valued at the lower of cost or market, since permanent markdowns are immediately recorded as a reduction of the retail value of inventory. The inventory at the Sam's Club segment is valued using the weighted-average cost LIFO method. At January 31, 2018 and January 31, 2017, the Company's inventories valued at LIFO approximated those inventories as if they were valued at FIFO.

Assets Held for Sale

Assets held for sale represent components and businesses that meet accounting requirements to be classified as held for sale and are presented as single asset and liability amounts in the Company's financial statements with a valuation allowance, if necessary, to recognize the net carrying amount at the lower of cost or fair value, less cost to sell. The Company reviews all businesses and assets held for sale each reporting period to determine whether the existing carrying amounts are fully recoverable in comparison to estimated fair values. As of January 31, 2018 and 2017, immaterial amounts for assets and liabilities held for sale were classified within prepaid expenses and other and accrued liabilities, respectively, in the Consolidated Balance Sheets.

Property and Equipment

Property and equipment are initially recorded at cost. Gains or losses on disposition are recognized as earned or incurred. Costs of major improvements are capitalized, while costs of normal repairs and maintenance are charged to expense as incurred. The following table summarizes the Company's property and equipment balances and includes the estimated useful lives that are generally used to depreciate the assets on a straight-line basis:



		As of January 31,
(Amounts in millions)	Estimated Useful Lives	2018			2017
Land	N/A	$	25,298		$	24,801
Buildings and improvements	3-40 years	101,155			98,547
Fixtures and equipment	1-30 years	52,695			48,998
Transportation equipment	3-15 years	2,387			2,845
Construction in progress	N/A	3,619			4,301
Property and equipment		$	185,154		$	179,492
Accumulated depreciation		(77,479		)	(71,782		)
Property and equipment, net		$	107,675		$	107,710

Leasehold improvements are depreciated or amortized over the shorter of the estimated useful life of the asset or the remaining expected lease term. Total depreciation and amortization expense for property and equipment, property under financing obligations and property under capital leases for fiscal 2018, 2017 and 2016 was $10.5 billion, $10.1 billion and $9.5 billion, respectively.

Leases

The Company estimates the expected term of a lease by assuming the exercise of renewal options where an economic penalty exists that would preclude the abandonment of the lease at the end of the initial non-cancelable term and the exercise of such renewal is at the sole discretion of the Company. The expected term is used in the determination of whether a store or club lease is a capital or operating lease and in the calculation of straight-line rent expense. Additionally, the useful life of leasehold improvements is limited by the expected lease term or the economic life of the asset, whichever is shorter. If significant expenditures are made for leasehold improvements late in the expected term of a lease and renewal is reasonably assured, the useful life of the leasehold improvement is limited to the end of the renewal period or economic life of the asset, whichever is shorter. Rent abatements and escalations are considered in the calculation of minimum lease payments in the Company's capital lease tests and in determining straight-line rent expense for operating leases.

The Company is often involved in the construction of its leased stores. In certain cases, payments made for certain structural components included in the lessor's construction of the leased assets result in the Company being deemed the owner of the leased assets for accounting purposes. As a result, the payments, regardless of the significance, are automatic indicators of ownership and require the Company to capitalize the lessor's total project cost with a corresponding financing obligation. Upon completion of the lessor's project, the Company performs a sale-leaseback analysis to determine if these assets and the related financing obligation can be derecognized from the Company's Consolidated Balance Sheets. If the Company is deemed to have "continuing involvement," the leased assets and the related financing obligation remain on the Company's Consolidated Balance Sheets and are generally amortized over the lease term. At the end of the lease term, including exercise of any renewal options, the net remaining financing obligation over the net carrying value of the fixed asset will be recognized as a non-cash gain on sale of the property.

Long-Lived Assets

Long-lived assets are initially recorded at cost. Management reviews long-lived assets for indicators of impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The evaluation is performed at the lowest level of identifiable cash flows, which is at the individual store or club level. Undiscounted cash flows expected to be generated by the related assets are estimated over the assets' useful lives based on updated projections. If the evaluation indicates that the carrying amount of the assets may not be recoverable, any potential impairment is measured based upon the fair value of the related asset or asset group as determined by an appropriate market appraisal or other valuation technique.

Goodwill and Other Acquired Intangible Assets

Goodwill represents the excess of the purchase price over the fair value of net assets acquired in business combinations and is allocated to the appropriate reporting unit when acquired. Other acquired intangible assets are stated at the fair value acquired as determined by a valuation technique commensurate with the intended use of the related asset. Goodwill and indefinite-lived intangible assets are not amortized; rather, they are evaluated for impairment annually and whenever events or changes in circumstances indicate that the value of the asset may be impaired. Definite-lived intangible assets are considered long-lived assets and are amortized on a straight-line basis over the periods that expected economic benefits will be provided.

Goodwill is evaluated for impairment using either a qualitative or quantitative approach for each of the Company's reporting units. Generally, a qualitative assessment is first performed to determine whether a quantitative goodwill impairment test is necessary. If management determines, after performing an assessment based on the qualitative factors, that the fair value of the reporting unit is more likely than not less than the carrying amount, or that a fair value of the reporting unit substantially in excess of the carrying amount cannot be assured, then a quantitative goodwill impairment test would be required. The quantitative test for goodwill impairment is performed by determining the fair value of the related reporting units. Fair value is measured based on the discounted cash flow method and relative market-based approaches. After evaluation, management determined the fair value of each reporting unit is greater than the carrying amount and, accordingly, the Company has not recorded any impairment charges related to goodwill.

The following table reflects goodwill activity, by reportable segment, for fiscal 2018 and 2017:



(Amounts in millions)	Walmart U.S.		Walmart International			Sam's Club		Total
Balances as of February 1, 2016	$	461	$	15,921		$	313	$	16,695
Changes in currency translation and other	—		(1,433		)	—		(1,433		)
Acquisitions⁽¹⁾	1,775		—			—		1,775
Balances as of January 31, 2017	2,236		14,488			313		17,037
Changes in currency translation and other	—		996			—		996
Acquisitions	209		—			—		209
Balances as of January 31, 2018	$	2,445	$	15,484		$	313	$	18,242


(1)	Goodwill recorded for fiscal 2017 Walmart U.S. acquisitions primarily relates to Jet.com, Inc. ("jet.com").

Indefinite-lived intangible assets are included in other assets and deferred charges in the Company's Consolidated Balance Sheets. These assets are evaluated for impairment based on their fair values using valuation techniques which are updated annually based on the most recent variables and assumptions. There were no significant impairment charges related to indefinite-lived intangible assets recorded for fiscal 2018, 2017 and 2016.

Self Insurance Reserves

The Company self-insures a number of risks, including, but not limited to, workers' compensation, general liability, auto liability, product liability and certain employee-related healthcare benefits. Standard actuarial procedures and data analysis are used to estimate the liabilities associated with these risks as of the balance sheet date on an undiscounted basis. The recorded liabilities reflect the ultimate cost for claims incurred but not paid and any estimable administrative run-out expenses related to the processing of these outstanding claim payments. On a regular basis, the liabilities are evaluated for appropriateness with claims reserve valuations provided by independent third-party actuaries. To limit exposure to some risks, the Company maintains insurance coverage with varying limits and retentions, including stop-loss insurance coverage for workers' compensation, general liability and auto liability.

Income Taxes

Income taxes are accounted for under the balance sheet method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases ("temporary differences"). Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rate is recognized in income in the period that includes the enactment date.

Deferred tax assets are evaluated for future realization and reduced by a valuation allowance to the extent that a portion is not more likely than not to be realized. Many factors are considered when assessing whether it is more likely than not that the deferred tax assets will be realized, including recent cumulative earnings, expectations of future taxable income, carryforward periods, and other relevant quantitative and qualitative factors. The recoverability of the deferred tax assets is evaluated by assessing the adequacy of future expected taxable income from all sources, including reversal of taxable temporary differences, forecasted operating earnings and available tax planning strategies. These sources of income rely heavily on estimates.

In determining the provision for income taxes, an annual effective income tax rate is used based on annual income, permanent differences between book and tax income, and statutory income tax rates. Discrete events such as audit settlements or changes in tax laws are recognized in the period in which they occur.

The Company records a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The Company records interest and penalties related to unrecognized tax benefits in interest expense and operating, selling, general and administrative expenses, respectively, in the Company's Consolidated Statements of Income. Refer to Note 9 for additional income tax disclosures.

Revenue Recognition

Sales

The Company recognizes sales revenue, net of sales taxes and estimated sales returns, at the time it sells merchandise to the customer. eCommerce sales include shipping revenue and are recorded upon delivery to the customer. Additionally, estimated sales returns are calculated using historical experience of actual returns as a percent of sales.

Membership Fee Revenue

The Company recognizes membership fee revenue both in the U.S. and internationally over the term of the membership, which is typically 12 months. The following table summarizes membership fee activity for fiscal 2018, 2017 and 2016:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018			2017			2016
Deferred membership fee revenue, beginning of year	$	743		$	744		$	759
Cash received from members	1,398			1,371			1,333
Membership fee revenue recognized	(1,411		)	(1,372		)	(1,348		)
Deferred membership fee revenue, end of year	$	730		$	743		$	744

Membership fee revenue is included in membership and other income in the Company's Consolidated Statements of Income. The deferred membership fee is included in accrued liabilities in the Company's Consolidated Balance Sheets.

Gift Cards

Customer purchases of gift cards, to be utilized in our stores or on our eCommerce websites, are not recognized as revenue until the card is redeemed and the customer purchases merchandise using the gift card. Gift cards in the U.S. and some countries do not carry an expiration date; therefore, customers and members can redeem their gift cards for merchandise indefinitely. Gift cards in some foreign countries where the Company does business have expiration dates. A certain number of gift cards, both with and without expiration dates, will not be fully redeemed. Management estimates unredeemed gift cards and recognizes revenue for these amounts when it is determined the likelihood of redemption is remote. Management periodically reviews and updates its estimates.

Financial and Other Services

The Company recognizes revenue from service transactions at the time the service is performed. Generally, revenue from services is classified as a component of net sales in the Company's Consolidated Statements of Income.

Cost of Sales

Cost of sales includes actual product cost, the cost of transportation to the Company's distribution facilities, stores and clubs from suppliers, the cost of transportation from the Company's distribution facilities to the stores, clubs and customers and the cost of warehousing for the Sam's Club segment and import distribution centers. Cost of sales is reduced by supplier payments that are not a reimbursement of specific, incremental and identifiable costs.

Payments from Suppliers

The Company receives consideration from suppliers for various programs, primarily volume incentives, warehouse allowances and reimbursements for specific programs such as markdowns, margin protection, advertising and supplier-specific fixtures. Payments from suppliers are accounted for as a reduction of cost of sales, except in certain limited situations when the payment is a reimbursement of specific, incremental and identifiable costs, and are recognized in the Company's Consolidated Statements of Income when the related inventory is sold.

Operating, Selling, General and Administrative Expenses

Operating, selling, general and administrative expenses include all operating costs of the Company, except cost of sales, as described above. As a result, the majority of the cost of warehousing and occupancy for the Walmart U.S. and Walmart International segments' distribution facilities is included in operating, selling, general and administrative expenses. Because the Company only includes a portion of the cost of its Walmart U.S. and Walmart International segments' distribution facilities in cost of sales, its gross profit and gross profit as a percentage of net sales may not be comparable to those of other retailers that may include all costs related to their distribution facilities in cost of sales and in the calculation of gross profit.

Advertising Costs

Advertising costs are expensed as incurred, consist primarily of print, television and digital advertisements and are recorded in operating, selling, general and administrative expenses in the Company's Consolidated Statements of Income. In certain limited situations, reimbursements from suppliers that are for specific, incremental and identifiable advertising costs are recognized as a reduction of advertising costs in operating, selling, general and administrative expenses. Advertising costs were $3.1 billion, $2.9 billion and $2.5 billion for fiscal 2018, 2017 and 2016, respectively.

Pre-Opening Costs

The cost of start-up activities, including organization costs, related to new store openings, store remodels, relocations, expansions and conversions are expensed as incurred and included in operating, selling, general and administrative expenses in the Company's Consolidated Statements of Income. Pre-opening costs totaled $106 million, $131 million and $271 million for fiscal 2018, 2017 and 2016, respectively.

Currency Translation

The assets and liabilities of all international subsidiaries are translated from the respective local currency to the U.S. dollar using exchange rates at the balance sheet date. Related translation adjustments are recorded as a component of accumulated other comprehensive loss. The Company's Consolidated Statements of Income of all international subsidiaries are translated from the respective local currencies to the U.S. dollar using average exchange rates for the period covered by the income statements.

Recent Accounting Pronouncements

Pronouncements Adopted in Fiscal 2018

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-09, Compensation–Stock Compensation (Topic 718), which is intended to simplify accounting for share-based payment transactions. The ASU changed several aspects of the accounting for share-based payment award transactions, including accounting for income taxes, forfeitures and minimum statutory tax withholding requirements. Management adopted this ASU beginning February 1, 2017, and as a result, reclassified an immaterial amount from operating activities to financing activities in the Company's prior year consolidated cash flows.

On December 22, 2017, the Securities and Exchange Commission (SEC) staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act ("SAB 118"), in response to the Tax Cuts and Jobs Act of 2017 ("Tax Act"). The Company has elected to record provisional amounts, as allowed by SAB 118, during a measurement period not to extend beyond one year of the enactment date. Management expects to complete the analysis within the measurement period in accordance with SAB 118.

Pronouncements to Be Adopted in the Year Ending January 31, 2019 ("fiscal 2019")

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU represents a single comprehensive model to recognize revenue to depict the transfer of promised goods or services to a customer at an amount that reflects the consideration it expects to be entitled to in exchange for those goods or services. The Company adopted this ASU on February 1, 2018, under the modified retrospective approach, which resulted in an immaterial cumulative adjustment to retained earnings. Also, this ASU will require additional disclosures.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments–Overall (Topic 825), which updates certain aspects of recognition, measurement, presentation and disclosure of financial instruments. This ASU primarily impacts the Company's accounting for its investment in JD.com ("JD"). The Company adopted this ASU on February 1, 2018, which resulted in a cumulative positive adjustment to retained earnings of approximately $2.9 billion based on the market value of our investment in JD at January 31, 2018. The retained earnings adjustment relates to both the available for sale portion and the cost portion of the investment. Beginning February 1, 2018, the adoption requires the remeasurement of our investment in JD due to observable price changes and impairments, if any, to be recorded through the Consolidated Statement of Income, introducing volatility to reported net income.

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows–Restricted Cash (Topic 230), which requires restricted cash to be included with cash and cash equivalents when reconciling the beginning and ending amounts on the statement of cash flows. The Company adopted this ASU on February 1, 2018, which, while immaterial, will modify the Company's presentation of Consolidated Statements of Cash Flows. At January 31, 2018, the Company had restricted cash recorded in line items other than cash and cash equivalents of $258 million.

In February 2018, the FASB issued Accounting Standards Update ASU 2018-02, Income Statement–Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The ASU provides that the stranded tax effects from the Tax Act in accumulated other comprehensive loss may be reclassified to retained earnings. The ASU is effective February 1, 2019, with early adoption permitted. Management anticipates early adopting this optional standard and is evaluating the effect on the Company's consolidated financial statements.

Other Pronouncements Being Evaluated

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires lease assets and liabilities to be recorded on the balance sheet. Certain qualitative and quantitative disclosures are also required, as well as retrospective recognition and measurement of impacted leases. The Company will adopt this ASU on February 1, 2019 and is implementing new lease systems in connection with the adoption. Management is progressing with implementation and continuing to evaluate the effect to the Company's consolidated financial statements and disclosures. Management expects a material impact to the Company's Consolidated Balance Sheet.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments–Credit Losses (Topic 326), which modifies the measurement of expected credit losses of certain financial instruments. The Company will adopt this ASU on February 1, 2020. Management is currently evaluating this ASU to determine its impact to the Company's consolidated financial statements.

Net Income Per Common Share

12 Months Ended

Jan. 31, 2018

Earnings Per Share [Abstract]

Net income per common share

Net Income Per Common Share

Basic net income per common share attributable to Walmart is based on the weighted-average common shares outstanding during the relevant period. Diluted net income per common share attributable to Walmart is based on the weighted-average common shares outstanding during the relevant period adjusted for the dilutive effect of share-based awards. The Company did not have significant share-based awards outstanding that were antidilutive and not included in the calculation of diluted net income per common share attributable to Walmart for fiscal 2018, 2017 and 2016.

The following table provides a reconciliation of the numerators and denominators used to determine basic and diluted net income per common share attributable to Walmart:



	Fiscal Years Ended January 31,
(Amounts in millions, except per share data)	2018			2017			2016
Numerator
Consolidated net income	$	10,523		$	14,293		$	15,080
Consolidated net income attributable to noncontrolling interest	(661		)	(650		)	(386		)
Consolidated net income attributable to Walmart	$	9,862		$	13,643		$	14,694

Denominator
Weighted-average common shares outstanding, basic	2,995			3,101			3,207
Dilutive impact of stock options and other share-based awards	15			11			10
Weighted-average common shares outstanding, diluted	3,010			3,112			3,217

Net income per common share attributable to Walmart
Basic	$	3.29		$	4.40		$	4.58
Diluted	3.28			4.38			4.57

Shareholders' Equity

12 Months Ended

Jan. 31, 2018

Share-based Compensation [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Shareholders' Equity

Share-Based Compensation

The Company has awarded share-based compensation to associates and nonemployee directors of the Company. The compensation expense recognized for all plans was $626 million, $596 million and $448 million for fiscal 2018, 2017 and 2016, respectively. Share-based compensation expense is generally included in operating, selling, general and administrative expenses in the Company's Consolidated Statements of Income. The total income tax benefit recognized for share-based compensation was $150 million, $212 million and $151 million for fiscal 2018, 2017 and 2016, respectively. The following table summarizes the Company's share-based compensation expense by award type:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Restricted stock and performance share units	$	234	$	237	$	134
Restricted stock units	368		332		292
Other	24		27		22
Share-based compensation expense	$	626	$	596	$	448

The Walmart Inc. Stock Incentive Plan of 2015 (the "Plan"), as amended and restated effective February 23, 2016, and as amended further as of February 1, 2017, and as renamed on February 1, 2018, was established to grant stock options, restricted (non-vested) stock, performance share units and other equity compensation awards for which 210 million shares of Walmart common stock issued or to be issued under the Plan have been registered under the Securities Act of 1933, as amended. The Company believes that such awards serve to align the interests of its associates with those of its shareholders.

The Plan's award types are summarized as follows:

•

Restricted Stock and Performance Share Units. Restricted stock awards are for shares that vest based on the passage of time and include restrictions related to employment. Performance share units vest based on the passage of time and achievement of performance criteria and may range from 0% to 150% of the original award amount. Vesting periods for these awards are generally between one and three years. Restricted stock and performance share units may be settled or deferred in stock and are accounted for as equity in the Company's Consolidated Balance Sheets. The fair value of restricted stock awards is determined on the date of grant and is expensed ratably over the vesting period. The fair value of performance share units is determined on the date of grant using the Company's stock price discounted for the expected dividend yield through the vesting period and is recognized over the vesting period. The weighted-average discount for the dividend yield used to determine the fair value of performance share units in fiscal 2018, 2017 and 2016 was 7.2%, 8.3% and 7.4%, respectively.

•

Restricted Stock Units. Restricted stock units provide rights to Company stock after a specified service period; generally 50% vest three years from the grant date and the remaining 50% vest five years from the grant date. The fair value of each restricted stock unit is determined on the date of grant using the stock price discounted for the expected dividend yield through the vesting period and is recognized ratably over the vesting period. The expected dividend yield is based on the anticipated dividends over the vesting period. The weighted-average discount for the dividend yield used to determine the fair value of restricted stock units granted in fiscal 2018, 2017 and 2016 was 9.0%, 9.0% and 8.7%, respectively.

In addition to the Plan, the Company's subsidiary in the United Kingdom has stock option plans for certain colleagues which generally vest over three years. The stock option share-based compensation expense is included in the Other line in the table above.

The following table shows the activity for restricted stock and performance share units and restricted stock units during fiscal 2018:



	Restricted Stock and Performance Share Units⁽¹⁾				Restricted Stock Units
(Shares in thousands)	Shares		Weighted-Average Grant-Date Fair Value Per Share		Shares		Weighted-Average Grant-Date Fair Value Per Share
Outstanding at February 1, 2017	9,077		$	68.61	24,276		$	65.52
Granted	3,598		74.73		8,570		67.54
Vested/exercised	(2,525	)	71.55		(5,440	)	63.02
Forfeited or expired	(1,592	)	68.59		(3,253	)	66.28
Outstanding at January 31, 2018	8,558		$	70.47	24,153		$	66.69


(1)	Assumes payout rate at 100% for Performance Share Units.

The following table includes additional information related to restricted stock and performance share units and restricted stock units:



	Fiscal Years Ended January 31,
(Amounts in millions, except years)	2018		2017		2016
Fair value of restricted stock and performance share units vested	$	181	$	149	$	142
Fair value of restricted stock units vested	344		261		237
Unrecognized compensation cost for restricted stock and performance share units	291		211		133
Unrecognized compensation cost for restricted stock units	972		986		628
Weighted average remaining period to expense for restricted stock and performance share units (years)	1.2		1.3		1.3
Weighted average remaining period to expense for restricted stock units (years)	1.8		1.9		1.7

Share Repurchase Program

From time to time, the Company repurchases shares of its common stock under share repurchase programs authorized by the Company's Board of Directors. All repurchases made during the fiscal year prior to November 20, 2017 were made under the plan in effect at the beginning of fiscal 2018. On October 9, 2017, the Board of Directors approved a new $20.0 billion share repurchase program which, beginning on November 20, 2017, replaced the previous share repurchase program. As of January 31, 2018, authorization for $18.8 billion of share repurchases remained under the current share repurchase program. Any repurchased shares are constructively retired and returned to an unissued status.

The Company considers several factors in determining when to execute share repurchases, including, among other things, current cash needs, capacity for leverage, cost of borrowings, its results of operations and the market price of its common stock. The following table provides, on a settlement date basis, the number of shares repurchased, average price paid per share and total amount paid for share repurchases for fiscal 2018, 2017 and 2016:



	Fiscal Years Ended January 31,
(Amounts in millions, except per share data)	2018		2017		2016
Total number of shares repurchased	104.9		119.9		62.4
Average price paid per share	$	79.11	$	69.18	$	65.90
Total cash paid for share repurchases	$	8,296	$	8,298	$	4,112

Accumulated Other Comprehensive Loss

12 Months Ended

Jan. 31, 2018

Other Comprehensive Income (Loss), Tax [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Loss

The following table provides the changes in the composition of total accumulated other comprehensive loss for fiscal 2018, 2017 and 2016:



(Amounts in millions and net of income taxes)	Currency Translation and Other			Net Investment Hedges			Unrealized Gain on Available-for-Sale Securities		Cash Flow Hedges			Minimum Pension Liability			Total
Balances as of February 1, 2015	$	(7,011	)	$	656		$	—	$	(134	)	$	(679	)	$	(7,168	)
Other comprehensive income (loss) before reclassifications, net	(4,679		)	366			—		(217		)	96			(4,434		)
Amounts reclassified from accumulated other comprehensive loss, net	—			—			—		15			(10		)	5
Balances as of January 31, 2016	(11,690		)	1,022			—		(336		)	(593		)	(11,597		)
Other comprehensive income (loss) before reclassifications, net	(2,817		)	413			145		(22		)	(389		)	(2,670		)
Amounts reclassified from accumulated other comprehensive loss, net	—			—			—		43			(8		)	35
Balances as of January 31, 2017	(14,507		)	1,435			145		(315		)	(990		)	(14,232		)
Other comprehensive income (loss) before reclassifications, net	2,345			(405		)	1,501		436			83			3,960
Amounts reclassified from accumulated other comprehensive loss, net	26			—			—		1			64			91
Balances as of January 31, 2018	$	(12,136	)	$	1,030		$	1,646	$	122		$	(843	)	$	(10,181	)

Amounts reclassified from accumulated other comprehensive loss for derivative instruments are recorded in interest, net, in the Company's Consolidated Statements of Income, and the amounts for the minimum pension liability are recorded in operating, selling, general and administrative expenses in the Company's Consolidated Statements of Income. The income tax impact for each of the amounts shown in the table above is immaterial.

Accrued Liabilities

12 Months Ended

Jan. 31, 2018

Accrued Liabilities [Abstract]

Accounts payable and accrued liabilities disclosure

Accrued Liabilities

The Company's accrued liabilities consist of the following:



	As of January 31,
(Amounts in millions)	2018		2017
Accrued wages and benefits⁽¹⁾	$	6,998	$	6,105
Self-insurance⁽²⁾	3,737		3,922
Accrued non-income taxes⁽³⁾	3,073		2,816
Deferred gift card revenue	2,017		1,856
Other⁽⁴⁾	6,297		5,955
Total accrued liabilities	$	22,122	$	20,654


(1)	Accrued wages and benefits include accrued wages, salaries, vacation, bonuses and other incentive plans.


(2)	Self-insurance consists of insurance-related liabilities, such as workers' compensation, general liability, auto liability, product liability and certain employee-related healthcare benefits.


(3)	Accrued non-income taxes include accrued payroll, value added, sales and miscellaneous other taxes.


(4)	Other accrued liabilities consist of various items such as maintenance, utilities, advertising, interest and legal contingencies.

Short-term Borrowings and Long-term Debt

12 Months Ended

Jan. 31, 2018

Long-term Debt, Unclassified [Abstract]

Short-term Borrowings and Long-term debt

Short-term Borrowings and Long-term Debt

Short-term borrowings consist of commercial paper and lines of credit. Short-term borrowings at January 31, 2018 and 2017 were $5.3 billion and $1.1 billion, respectively, with weighted-average interest rates of 1.5% and 6.2%, respectively.

The Company has various committed lines of credit in the U.S., committed with 23 financial institutions, totaling $12.5 billion as of January 31, 2018 and 2017, respectively. These committed lines of credit are summarized in the following table:



	As of January 31,
	2018						2017
(Amounts in millions)	Available		Drawn		Undrawn		Available		Drawn		Undrawn
Five-year credit facility⁽¹⁾	$	5,000	$	—	$	5,000	$	5,000	$	—	$	5,000
364-day revolving credit facility⁽¹⁾	7,500		—		7,500		7,500		—		7,500
Total	$	12,500	$	—	$	12,500	$	12,500	$	—	$	12,500


(1)	In May 2017, the Company renewed and extended its existing five-year credit facility and its existing 364-day revolving credit facility, both of which are used to support its commercial paper program.

The committed lines of credit in the table above mature at various times between May 2018 and May 2022, carry interest rates generally ranging between LIBOR plus 10 basis points and LIBOR plus 75 basis points, and incur commitment fees ranging between 1.5 and 4.0 basis points. In conjunction with the committed lines of credit listed in the table above, the Company has agreed to observe certain covenants, the most restrictive of which relates to the maximum amount of secured debt. Additionally, the Company also maintains other committed lines of credit outside of the U.S. with an available and undrawn amount of approximately $4.0 billion as of January 31, 2018.

Apart from the committed lines of credit, the Company has trade and stand-by letters of credit totaling $2.6 billion and $3.6 billion at January 31, 2018 and 2017, respectively. These letters of credit are utilized in normal business activities.

The Company's long-term debt, which includes the fair value instruments further discussed in Note 8, consists of the following:



		January 31, 2018				January 31, 2017
(Amounts in millions)	Maturity Dates By Fiscal Year	Amount			Average Rate⁽¹⁾	Amount			Average Rate⁽¹⁾
Unsecured debt
Fixed	2019 - 2048	$	24,540		3.9%	$	30,500		4.7%
Variable	2019 - 2020	800			4.1%	500			5.5%
Total U.S. dollar denominated		25,340				31,000
Fixed	2023 - 2030	3,101			3.3%	2,674			3.3%
Variable		—				—
Total Euro denominated		3,101				2,674
Fixed	2031 - 2039	3,801			5.4%	4,370			5.3%
Variable		—				—
Total Sterling denominated		3,801				4,370
Fixed	2021 - 2028	1,655			0.4%	88			1.6%
Variable		—				—
Total Yen denominated		1,655				88
Total unsecured debt		33,897				38,132
Total other⁽²⁾		(114		)		139
Total debt		33,783				38,271
Less amounts due within one year		(3,738		)		(2,256		)
Long-term debt		$	30,045			$	36,015


(1)	The average rate represents the weighted-average stated rate for each corresponding debt category, based on year-end balances and year-end interest rates. Interest costs are also impacted by certain derivative financial instruments described in Note 8.


(2)	Includes deferred loan costs, discounts, fair value hedges, foreign-held debt and secured debt. At January 31, 2018 and 2017 the Company had secured debt in the amount of $10 million and $14 million, respectively, which was collateralized by property that had an aggregate carrying amount of approximately $101 million and $82 million, respectively.

At January 31, 2018 and 2017, the Company had $500 million in debt with embedded put options. The issuance of money market puttable reset securities in the amount of $500 million is structured to be remarketed in connection with the annual reset of the interest rate. If, for any reason, the remarketing of the notes does not occur at the time of any interest rate reset, the holders of the notes must sell and the Company must repurchase the notes at par. Accordingly, this issuance has been classified as long-term debt due within one year in the Company's Consolidated Balance Sheets.

Annual maturities of long-term debt during the next five years and thereafter are as follows:



(Amounts in millions)	Annual
Fiscal Year	Maturities
2019	$	3,733
2020	1,914
2021	3,336
2022	607
2023	2,934
Thereafter	21,259
Total	$	33,783

Debt Issuances

Information on significant long-term debt issued during fiscal 2018 is as follows:

(Amounts in millions)

Issue Date

Principal Amount

Maturity Date

Fixed vs. Floating

Interest Rate

Proceeds

July 18, 2017

70,000 JPY

July 15, 2022

Fixed

0.183%

$

619

July 18, 2017

40,000 JPY

July 18, 2024

Fixed

0.298%

354

July 18, 2017

60,000 JPY

July 16, 2027

Fixed

0.520%

530

October 20, 2017

300 USD

October 9, 2019

Floating

299

October 20, 2017

1,200 USD

October 9, 2019

Fixed

1.750%

1,198

October 20, 2017

1,250 USD

December 15, 2020

Fixed

1.900%

1,245

October 20, 2017

1,250 USD

December 15, 2022

Fixed

2.350%

1,245

October 20, 2017

1,000 USD

December 15, 2024

Fixed

2.650%

996

October 20, 2017

1,000 USD

December 15, 2047

Fixed

3.625%

990

Total

$

7,476

As described in Note 8, the current year issuances of foreign-currency-denominated long-term debt are designated as a hedge of the Company's net investment in Japan.

The Company did not have any significant long-term debt issuances during fiscal 2017, but received some proceeds from a number of small long-term debt issuances by several of its non-U.S. operations.

Maturities and Extinguishments

The following table provides details of debt repayments during fiscal 2018:



(Amounts in millions)
Maturity Date	Principal Amount	Fixed vs. Floating	Interest Rate	Repayment⁽¹⁾
April 5, 2017	1,000 USD	Fixed	5.375%	$	1,000
April 21, 2017	500 USD	Fixed	1.000%	500
Total repayment of matured debt				1,500

December 15, 2018	1,000 USD	Fixed	1.950%	276
February 1, 2019	500 USD	Fixed	4.125%	136
July 8, 2020	1,500 USD	Fixed	3.625%	661
October 25, 2020	1,750 USD	Fixed	3.250%	553
April 15, 2021	1,000 USD	Fixed	4.250%	491
October 16, 2023	250 USD	Fixed	6.750%	98
April 5, 2027	750 USD	Fixed	5.875%	267
February 15, 2030	500 USD	Fixed	7.550%	412
September 4, 2035	2,500 USD	Fixed	5.250%	532
September 28, 2035	1,000 GBP	Fixed	5.250%	260
August 17, 2037	3,000 USD	Fixed	6.500%	1,700
April 15, 2038	2,000 USD	Fixed	6.200%	1,081
January 19, 2039	1,000 GBP	Fixed	4.875%	851
April 2, 2040	1,250 USD	Fixed	5.625%	499
July 9, 2040	750 USD	Fixed	4.875%	372
October 25, 2040	1,250 USD	Fixed	5.000%	731
April 15, 2041	2,000 USD	Fixed	5.625%	1,082
April 11, 2043	1,000 USD	Fixed	4.000%	291
October 2, 2043	750 USD	Fixed	4.750%	481
April 22, 2044	1,000 USD	Fixed	4.300%	498
Total repayment of extinguished debt				11,272
Total				$	12,772

(1) Represents portion of the principal amount repaid during fiscal 2018.

In connection with extinguishing debt, the Company paid premiums of approximately $3.1 billion during fiscal 2018, resulting in a loss on extinguishment of debt of approximately $3.1 billion.

During fiscal 2017, the following long-term debt matured and was repaid:



(Amounts in millions)
Maturity Date	Principal Amount	Fixed vs. Floating	Interest Rate	Repayment
April 11, 2016	1,000 USD	Fixed	0.600%	$	1,000
April 15, 2016	1,000 USD	Fixed	2.800%	1,000
				$	2,000

During fiscal 2018 and 2017, the Company also repaid other, smaller long-term debt as it matured in several of its non-U.S. operations.

Fair Value Measurements

12 Months Ended

Jan. 31, 2018

Fair Value Disclosures [Abstract]

Fair value measurements

Fair Value Measurements

The Company records and discloses certain financial and non-financial assets and liabilities at fair value. The fair value of an asset is the price at which the asset could be sold in an orderly transaction between unrelated, knowledgeable and willing parties able to engage in the transaction. The fair value of a liability is the amount that would be paid to transfer the liability to a new obligor in a transaction between such parties, not the amount that would be paid to settle the liability with the creditor. Assets and liabilities recorded at fair value are measured using the fair value hierarchy, which prioritizes the inputs used in measuring fair value. The levels of the fair value hierarchy are:


•	Level 1: observable inputs such as quoted prices in active markets;


•	Level 2: inputs other than quoted prices in active markets that are either directly or indirectly observable; and


•	Level 3: unobservable inputs for which little or no market data exists, therefore requiring the Company to develop its own assumptions.

Recurring Fair Value Measurements

The Company holds derivative instruments that are required to be measured at fair value on a recurring basis. The fair values are the estimated amounts the Company would receive or pay upon termination of the related derivative agreements as of the reporting dates. The fair values have been measured using the income approach and Level 2 inputs, which include the relevant interest rate and foreign currency forward curves. As of January 31, 2018 and 2017, the notional amounts and fair values of these derivatives were as follows:



	January 31, 2018					January 31, 2017
(Amounts in millions)	Notional Amount		Fair Value			Notional Amount		Fair Value
Receive fixed-rate, pay variable-rate interest rate swaps designated as fair value hedges	$	4,000	$	(91	)	$	5,000	$	(4	)
Receive fixed-rate, pay fixed-rate cross-currency swaps designated as net investment hedges	2,250		208			2,250		471
Receive fixed-rate, pay fixed-rate cross-currency swaps designated as cash flow hedges	4,523		205			3,957		(618		)
Total	$	10,773	$	322		$	11,207	$	(151	)

Additionally, the Company's available-for-sale securities are measured at fair value on a recurring basis using Level 1 inputs. Changes in fair value are recorded in accumulated other comprehensive loss. The cost basis and fair value of the Company's available-for-sale securities as of January 31, 2018 and 2017, are as follows:



	January 31, 2018				January 31, 2017
(Amounts in millions)	Cost Basis		Fair Value		Cost Basis		Fair Value
Available-for-sale securities	$	1,901	$	3,547	$	1,901	$	2,046

Nonrecurring Fair Value Measurements

In addition to assets and liabilities that are recorded at fair value on a recurring basis, the Company's assets and liabilities are also subject to nonrecurring fair value measurements. Generally, assets are recorded at fair value on a nonrecurring basis as a result of impairment charges. Fiscal 2018 impairment charges to assets measured at fair value on a nonrecurring basis were $1.4 billion and primarily related to restructuring activities described in Note 14, as well as discontinued real estate projects in the U.S. and decisions to exit certain international properties. These impairment charges were classified in operating, selling, general and administrative expenses in the Company's Consolidated Statement of Income. The fair value was determined based on comparable market values of similar properties or on a rental income approach, using Level 2 inputs. Impairment charges not related to restructuring or decisions to exit properties for fiscal 2018 were not material. Additionally, total impairment charges for fiscal 2017 were not material.

Other Fair Value Disclosures

The Company records cash and cash equivalents and short-term borrowings at cost. The carrying values of these instruments approximate their fair value due to their short-term maturities.

The Company's long-term debt is also recorded at cost. The fair value is estimated using Level 2 inputs based on the Company's current incremental borrowing rate for similar types of borrowing arrangements. The carrying value and fair value of the Company's long-term debt as of January 31, 2018 and 2017, are as follows:



	January 31, 2018				January 31, 2017
(Amounts in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt, including amounts due within one year	$	33,783	$	38,766	$	38,271	$	44,602

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Derivative Financial Instruments

12 Months Ended

Jan. 31, 2018

Summary of Derivative Instruments [Abstract]

Derivative financial instruments

Derivative Financial Instruments

The Company uses derivative financial instruments for hedging and non-trading purposes to manage its exposure to changes in interest and currency exchange rates, as well as to maintain an appropriate mix of fixed- and variable-rate debt. Use of derivative financial instruments in hedging programs subjects the Company to certain risks, such as market and credit risks. Market risk represents the possibility that the value of the derivative financial instrument will change. In a hedging relationship, the change in the value of the derivative financial instrument is offset to a great extent by the change in the value of the underlying hedged item. Credit risk related to a derivative financial instrument represents the possibility that the counterparty will not fulfill the terms of the contract. The notional, or contractual, amount of the Company's derivative financial instruments is used to measure interest to be paid or received and does not represent the Company's exposure due to credit risk. Credit risk is monitored through established approval procedures, including setting concentration limits by counterparty, reviewing credit ratings and requiring collateral from the counterparty when appropriate.

The Company only enters into derivative transactions with counterparties rated "A-" or better by nationally recognized credit rating agencies. Subsequent to entering into derivative transactions, the Company regularly monitors the credit ratings of its counterparties. In connection with various derivative agreements, including master netting arrangements, the Company held cash collateral from counterparties of $279 million and $242 million at January 31, 2018 and January 31, 2017, respectively. The Company records cash collateral received as amounts due to the counterparties exclusive of any derivative asset. Furthermore, as part of the master netting arrangements with each of these counterparties, the Company is also required to post collateral with a counterparty if the Company's net derivative liability position exceeds $150 million with such counterparties. The Company did not have any cash collateral posted with counterparties at January 31, 2018 and January 31, 2017, respectively. The Company records cash collateral it posts with counterparties as amounts receivable from those counterparties exclusive of any derivative liability.

The Company uses derivative financial instruments for the purpose of hedging its exposure to interest and currency exchange rate risks and, accordingly, the contractual terms of a hedged instrument closely mirror those of the hedged item, providing a high degree of risk reduction and correlation. Contracts that are effective at meeting the risk reduction and correlation criteria are recorded using hedge accounting. If a derivative financial instrument is recorded using hedge accounting, depending on the nature of the hedge, changes in the fair value of the instrument will either be offset against the change in fair value of the hedged assets, liabilities or firm commitments through earnings or be recognized in accumulated other comprehensive loss until the hedged item is recognized in earnings. Any hedge ineffectiveness is immediately recognized in earnings. The Company's net investment and cash flow instruments are highly effective hedges and the ineffective portion has not been, and is not expected to be, significant. Instruments that do not meet the criteria for hedge accounting, or contracts for which the Company has not elected hedge accounting, are recorded at fair value with unrealized gains or losses reported in earnings during the period of the change.

Fair Value Instruments

The Company is a party to receive fixed-rate, pay variable-rate interest rate swaps that the Company uses to hedge the fair value of fixed-rate debt. The notional amounts are used to measure interest to be paid or received and do not represent the Company's exposure due to credit loss. The Company's interest rate swaps that receive fixed-interest rate payments and pay variable-interest rate payments are designated as fair value hedges. As the specific terms and notional amounts of the derivative instruments match those of the fixed-rate debt being hedged, the derivative instruments are assumed to be perfectly effective hedges. Changes in the fair values of these derivative instruments are recorded in earnings, but are offset by corresponding changes in the fair values of the hedged items, also recorded in earnings, and, accordingly, do not impact the Company's Consolidated Statements of Income. These fair value instruments will mature on dates ranging from October 2020 to April 2024.

Net Investment Instruments

The Company is a party to cross-currency interest rate swaps that the Company uses to hedge its net investments. The agreements are contracts to exchange fixed-rate payments in one currency for fixed-rate payments in another currency. All changes in the fair value of these instruments are recorded in accumulated other comprehensive loss, offsetting the currency translation adjustment of the related investment that is also recorded in accumulated other comprehensive loss. These instruments will mature on dates ranging from July 2020 to February 2030.

The Company has issued foreign-currency-denominated long-term debt as hedges of net investments of certain of its foreign operations. These foreign-currency-denominated long-term debt issuances are designated and qualify as nonderivative hedging instruments. Accordingly, the foreign currency translation of these debt instruments is recorded in accumulated other comprehensive loss, offsetting the foreign currency translation adjustment of the related net investment that is also recorded in accumulated other comprehensive loss. At January 31, 2018 and January 31, 2017, the Company had ¥180 billion and ¥10 billion, respectively, of outstanding long-term debt designated as a hedge of its net investment in Japan, as well as outstanding long-term debt of £1.7 billion and £2.5 billion at January 31, 2018 and January 31, 2017, respectively, that was designated as a hedge of its net investment in the United Kingdom. These nonderivative net investment hedges will mature on dates ranging from July 2020 to January 2039.

Cash Flow Instruments

The Company is a party to receive fixed-rate, pay fixed-rate cross-currency interest rate swaps to hedge the currency exposure associated with the forecasted payments of principal and interest of certain non-U.S. denominated debt. The swaps are designated as cash flow hedges of the currency risk related to payments on the non-U.S. denominated debt. The effective portion of changes in the fair value of derivatives designated as cash flow hedges of foreign exchange risk is recorded in accumulated other comprehensive loss and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The hedged items are recognized foreign currency-denominated liabilities that are re-measured at spot exchange rates each period, and the assessment of effectiveness (and measurement of any ineffectiveness) is based on total changes in the related derivative's cash flows. As a result, the amount reclassified into earnings each period includes an amount that offsets the related transaction gain or loss arising from that re-measurement and the adjustment to earnings for the period's allocable portion of the initial spot-forward difference associated with the hedging instrument. These cash flow instruments will mature on dates ranging from April 2022 to March 2034.

Financial Statement Presentation

Although subject to master netting arrangements, the Company does not offset derivative assets and derivative liabilities in its Consolidated Balance Sheets. Derivative instruments with an unrealized gain are recorded in the Company's Consolidated Balance Sheets as either current or non-current assets, based on maturity date, and those hedging instruments with an unrealized loss are recorded as either current or non-current liabilities, based on maturity date. Refer to Note 7 for the net presentation of the Company's derivative instruments.

The Company's derivative instruments, as well as its nonderivative debt instruments designated and qualifying as net investment hedges, were classified as follows as of January 31, 2018 and 2017 in the Company's Consolidated Balance Sheets:



	January 31, 2018						January 31, 2017
(Amounts in millions)	Fair Value Instruments		Net Investment Instruments		Cash Flow Instruments		Fair Value Instruments		Net Investment Instruments		Cash Flow Instruments
Derivative instruments
Derivative assets:
Other assets and deferred charges	$	—	$	208	$	300	$	8	$	471	$	—

Derivative liabilities:
Deferred income taxes and other	91		—		95		12		—		618

Nonderivative hedging instruments
Long-term debt	—		4,041		—		—		3,209		—

Realized gains and losses related to the Company's derivatives are recorded in interest, net, in the Company's Consolidated Statements of Income. Amounts related to the Company's derivatives expected to be reclassified from accumulated other comprehensive loss to net income during the next 12 months are not significant.

Taxes

12 Months Ended

Jan. 31, 2018

Income Tax Disclosure [Abstract]

Income tax disclosure

Taxes

Income Before Income Taxes

The components of income before income taxes are as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
U.S.	$	10,722	$	15,680	$	16,685
Non-U.S.	4,401		4,817		4,953
Total income before income taxes	$	15,123	$	20,497	$	21,638

A summary of the provision for income taxes is as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018			2017			2016
Current:
U.S. federal	$	2,998		$	3,454		$	5,562
U.S. state and local	405			495			622
International	1,377			1,510			1,400
Total current tax provision	4,780			5,459			7,584
Deferred:
U.S. federal	(22		)	1,054			(704		)
U.S. state and local	(12		)	51			(106		)
International	(146		)	(360		)	(216		)
Total deferred tax expense (benefit)	(180		)	745			(1,026		)
Total provision for income taxes	$	4,600		$	6,204		$	6,558

On December 22, 2017, the Tax Act was enacted and contains significant changes to U.S. income tax law. Effective in 2018, the Tax Act reduces the U.S. statutory tax rate from 35% to 21% and creates new taxes focused on foreign-sourced earnings and related-party payments, including the creation of the base erosion anti-abuse tax and a new tax on global intangible low-taxed income ("GILTI"). By operation of law, the Company will apply a blended U.S. statutory federal income tax rate of 33.8% for fiscal 2018. In addition, the Company was subject to a one-time transition tax in fiscal 2018 on accumulated foreign subsidiary earnings not previously subject to U.S. income tax.

The Securities and Exchange Commission (SEC) staff issued SAB 118 on December 22, 2017, which allows companies to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. Due to the timing of the enactment and the complexity involved in applying the provisions of the Tax Act, the Company made reasonable estimates of the effects and recorded provisional amounts in its financial statements as of January 31, 2018, in accordance with SAB 118. As the Company collects and prepares necessary data, and interprets the Tax Act and any additional guidance issued by the U.S. Treasury Department, the IRS, and other standard-setting bodies, the Company may make adjustments to the provisional amounts during fiscal 2019. Those adjustments may materially impact the Company's provision for income taxes and effective tax rate in the period in which the adjustments are made. The accounting for the tax effects of the Tax Act will be completed by the measurement period provided in SAB 118.

Provisional amounts for the following income tax effects of the Tax Act have been recorded as of January 31, 2018, and are subject to change during fiscal 2019. The net tax benefit recognized in fiscal 2018 related to the Tax Act was $0.2 billion. As the Company completes its analysis of the Tax Act and incorporates additional guidance that may be issued by the U.S. Treasury Department, the IRS or other standard-setting bodies, the Company may identify additional effects not reflected as of January 31, 2018.

One-time Transition Tax

The Tax Act requires the Company to pay U.S. income taxes on accumulated foreign subsidiary earnings not previously subject to U.S. income tax at a rate of 15.5% to the extent of foreign cash and certain other net current assets, as defined by the Tax Act, and 8.0% on the remaining earnings. The Company recorded a provisional amount of $1.9 billion of additional income tax expense for its one-time transitional tax liability. The Company recorded a provisional amount based on estimates as it completes its analysis of the application of the effects of the Tax Act as well as finalize its calculations surrounding the components of its foreign subsidiaries subject to the transition tax including the potential of any correlative adjustments.

Deferred Tax Effects

The Tax Act reduces the U.S. statutory tax rate from 35% to 21% for years after 2017. Accordingly, the Company re-measured its deferred taxes as of January 31, 2018, to reflect the reduced rate that will apply in future periods when these deferred taxes are settled or realized. The Company recognized a deferred tax benefit of $2.1 billion to reflect the reduced U.S. tax rate and other effects of the Tax Act. The benefit associated with the remeasurement of the deferred taxes is provisional as of January 31, 2018, as the Company continues gathering the necessary information to complete the calculations. The Company has no provisional adjustment with respect to the GILTI provision of the Tax Act as the Company is not able to make reasonable estimates of its related effects at this time. The Company has not yet elected an accounting policy to determine whether it will recognize GILTI as a period cost when incurred or to recognize deferred taxes for basis differences expected to reverse.

Effective Income Tax Rate Reconciliation

The Company's effective income tax rate is typically lower than the U.S. statutory tax rate primarily because of benefits from lower-taxed global operations, including the use of global funding structures and certain U.S. tax credits as further discussed in the "Cash and Cash Equivalents" section of the Company's significant accounting policies in Note 1. The Company's non-U.S. income is generally subject to local country tax rates that are below the U.S. statutory tax rate. Certain non-U.S. earnings have been indefinitely reinvested outside the U.S. A reconciliation of the significant differences between the U.S. statutory tax rate and the effective income tax rate on pretax income from continuing operations is as follows:



	Fiscal Years Ended January 31,
	2018		2017		2016
U.S. statutory tax rate	33.8	%	35.0	%	35.0	%
U.S. state income taxes, net of federal income tax benefit	1.8	%	1.7	%	1.8	%
Impact of the Tax Act:
One-time transition tax	12.3	%	—	%	—	%
Deferred tax effects	(14.1	)%	—	%	—	%
Income taxed outside the U.S.	(4.1	)%	(4.5	)%	(4.0	)%
Net impact of repatriated international earnings	(0.1	)%	(1.0	)%	0.1	%
Other, net	0.8	%	(0.9	)%	(2.6	)%
Effective income tax rate	30.4	%	30.3	%	30.3	%

Deferred Taxes

The Company recorded a provisional adjustment to its U.S. deferred income taxes as of January 31, 2018 to reflect the reduction in the U.S. statutory tax rate from 35% to 21% resulting from the Tax Act. The significant components of the Company's deferred tax account balances are as follows:



	January 31,
(Amounts in millions)	2018			2017
Deferred tax assets:
Loss and tax credit carryforwards	$	1,989		$	3,633
Accrued liabilities	2,482			3,437
Share-based compensation	217			309
Other	1,251			1,474
Total deferred tax assets	5,939			8,853
Valuation allowances	(1,843		)	(1,494		)
Deferred tax assets, net of valuation allowance	4,096			7,359
Deferred tax liabilities:
Property and equipment	3,954			6,435
Inventories	1,153			1,808
Other	941			1,884
Total deferred tax liabilities	6,048			10,127
Net deferred tax liabilities	$	1,952		$	2,768

The deferred taxes noted above are classified as follows in the Company's Consolidated Balance Sheets:



	January 31,
(Amounts in millions)	2018		2017
Balance Sheet classification
Assets:
Other assets and deferred charges	$	1,879	$	1,565

Liabilities:
Deferred income taxes and other	3,831		4,333

Net deferred tax liabilities	$	1,952	$	2,768

Unremitted Earnings

The Company has previously asserted all of its unremitted earnings offshore were permanently reinvested. Accordingly, the Company did not record any deferred taxes related to any outside basis differences associated with its foreign subsidiaries. As part of the tax reform enacted on December 22, 2017, the Company is currently assessing the impact of the new legislation, which can in turn, impact its assertion regarding any potential future repatriation. After consideration of the provisional transition tax calculation and deemed repatriation of the previously unremitted earnings, the Company is estimating, on a provisional basis, its outside tax basis exceeds the outside book basis of its foreign subsidiaries by approximately $10.0 billion. Once the calculations are completed regarding the transition tax, taking into account the timeline provided in SAB 118, the Company will provide updated disclosures regarding any potential changes for its previous assertions.

Net Operating Losses, Tax Credit Carryforwards and Valuation Allowances

At January 31, 2018, the Company had net operating loss and capital loss carryforwards totaling approximately $6.7 billion. Of these carryforwards, approximately $3.6 billion will expire, if not utilized, in various years through 2038. The remaining carryforwards have no expiration. At January 31, 2018, the Company's provisional transition tax calculation fully utilized all foreign tax credit carryforwards.

The recoverability of these future tax deductions and credits is evaluated by assessing the adequacy of future expected taxable income from all sources, including taxable income in prior carryback years, reversal of taxable temporary differences, forecasted operating earnings and available tax planning strategies. To the extent the Company does not consider it more likely than not that a deferred tax asset will be recovered, a valuation allowance is established. To the extent that a valuation allowance has been established and it is subsequently determined that it is more likely than not that the deferred tax assets will be recovered, the valuation allowance will be released.

The Company had valuation allowances of approximately $1.8 billion and $1.5 billion as of January 31, 2018 and 2017, respectively, on deferred tax assets associated primarily with net operating loss carryforwards for which management has determined it is more likely than not that the deferred tax asset will not be realized. Net activity in the valuation allowance during fiscal 2018 related to releases arising from the use of deferred tax assets, changes in judgment regarding the future realization of deferred tax assets, increases from certain net operating losses and deductible temporary differences arising in fiscal 2018, decreases due to operating loss expirations and fluctuations in currency exchange rates. Management believes that it is more likely than not that the remaining deferred tax assets will be fully realized.

Uncertain Tax Positions

The benefits of uncertain tax positions are recorded in the Company's Consolidated Financial Statements only after determining a more-likely-than-not probability that the uncertain tax positions will withstand challenge, if any, from taxing authorities.

As of January 31, 2018 and 2017, the amount of unrecognized tax benefits related to continuing operations was $1.0 billion and $1.1 billion, respectively. The amount of unrecognized tax benefits that would affect the Company's effective income tax rate was $690 million and $703 million as of January 31, 2018 and 2017, respectively.

A reconciliation of unrecognized tax benefits from continuing operations is as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018			2017			2016
Unrecognized tax benefits, beginning of year	$	1,050		$	607		$	838
Increases related to prior year tax positions	130			388			164
Decreases related to prior year tax positions	(254		)	(32		)	(446		)
Increases related to current year tax positions	122			145			119
Settlements during the period	(23		)	(46		)	(25		)
Lapse in statutes of limitations	(15		)	(12		)	(43		)
Unrecognized tax benefits, end of year	$	1,010		$	1,050		$	607

The Company classifies interest and penalties related to uncertain tax benefits as interest expense and as operating, selling, general and administrative expenses, respectively. During fiscal 2018, 2017 and 2016, the Company recognized interest expense related to uncertain tax positions of $32 million, $35 million and $5 million, respectively. As of January 31, 2018 and 2017, accrued interest related to uncertain tax positions of $96 million and $72 million, respectively, was recorded in the Company's Consolidated Balance Sheets. As of January 31, 2018, accrued penalties related to uncertain tax positions of $12 million were recorded in the Company's Consolidated Balance Sheets. As of January 31, 2017, there were no accrued penalties related to uncertain tax positions recorded in the Company's Consolidated Balance Sheets.

During the next twelve months, it is reasonably possible that tax audit resolutions could reduce unrecognized tax benefits by between $50 million and $400 million, either because the tax positions are sustained on audit or because the Company agrees to their disallowance. The Company is focused on resolving tax audits as expeditiously as possible. As a result of these efforts, unrecognized tax benefits could potentially be reduced beyond the provided range during the next twelve months. The Company does not expect any change to have a material impact to its Consolidated Financial Statements.

The Company remains subject to income tax examinations for its U.S. federal income taxes generally for fiscal 2013 through 2018. The Company also remains subject to income tax examinations for international income taxes for fiscal 2011 through 2018, and for U.S. state and local income taxes generally for the fiscal years ended 2013 through 2018.

Other Taxes

The Company is subject to tax examinations for value added, sales-based, payroll and other non-income taxes. A number of these examinations are ongoing in various jurisdictions. In certain cases, the Company has received assessments from the respective taxing authorities in connection with these examinations. Unless otherwise indicated, the possible losses or range of possible losses associated with these matters are individually immaterial, but a group of related matters, if decided adversely to the Company, could result in a liability material to the Company's Consolidated Financial Statements.

In particular, Brazil federal, state and local laws are complex and subject to varying interpretations, and the Company's subsidiaries in Brazil are party to a large number of non-income tax assessments. One of these interpretations common to the retail industry in Brazil relates to whether credits received from suppliers should be treated as a reduction of cost for purposes of calculating certain indirect taxes. The Company believes credits received from suppliers are reductions in cost and that it has substantial legal defenses in this matter and intends to defend this matter vigorously. As such, the Company has not accrued for this matter, although the Company may be required to deposit funds in escrow or secure financial guarantees to continue the judicial process in defending this matter in Brazil.

Contingencies

12 Months Ended

Jan. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Contingencies

Legal Proceedings

The Company is involved in a number of legal proceedings. The Company has made accruals with respect to these matters, where appropriate, which are reflected in the Company's Consolidated Financial Statements. For some matters, a liability is not probable or the amount cannot be reasonably estimated and therefore an accrual has not been made. However, where a liability is reasonably possible and may be material, such matters have been disclosed. The Company may enter into discussions regarding settlement of these matters, and may enter into settlement agreements, if it believes settlement is in the best interest of the Company and its shareholders.

Unless stated otherwise, the matters discussed below, if decided adversely to or settled by the Company, individually or in the aggregate, may result in a liability material to the Company's financial condition or results of operations.

ASDA Equal Value Claims

ASDA Stores, Ltd. ("ASDA"), a wholly-owned subsidiary of the Company, is a defendant in over 10,000 "equal value" claims that are proceeding before an Employment Tribunal in Manchester (the "Employment Tribunal") in the United Kingdom ("UK") on behalf of current and former ASDA store employees, and further claims may be asserted in the future. The claimants allege that the work performed by female employees in ASDA's retail stores is of equal value in terms of, among other things, the demands of their jobs compared to that of male employees working in ASDA's warehouse and distribution facilities, and that the disparity in pay between these different job positions is not objectively justified. As a result, claimants are requesting differential back pay based on higher wage rates in the warehouse and distribution facilities and higher wage rates on a prospective basis.

On March 23, 2015, ASDA asked the Employment Tribunal to stay all proceedings and to "strike out" substantially all of the claims because the claimants had not adhered to the Tribunal's procedural rule for including multiple claimants on the same claim form. On July 23, 2015, the Employment Tribunal denied ASDA's requests. Following additional proceedings, on June 20, 2017, the Employment Appeal Tribunal ruled in favor of ASDA on the "strike out" issue and remitted the matter to the Employment Tribunal to determine whether the improperly filed claims should be struck out. On July 12, 2017, claimants sought permission from the Court of Appeals to appeal this ruling, which was granted on October 3, 2017. A hearing before the Court of Appeals is scheduled for October 23, 2018.

As to the initial phase of the Equal Value claims, on October 14, 2016, following a preliminary hearing, the Employment Tribunal ruled that claimants could compare their positions in ASDA's retail stores with those of employees in ASDA's warehouse and distribution facilities. On August 31, 2017, the Employment Appeal Tribunal affirmed the Employment Tribunal's ruling. The Employment Appeal Tribunal also granted permission for ASDA to appeal substantially all of its findings on August 31, 2017. ASDA sought permission to appeal the remainder of the Employment Appeal Tribunal's findings to the Court of Appeals on September 21, 2017. A hearing before the Court of Appeals is scheduled for October 10, 2018.

Claimants are now proceeding in the next phase of their claims. That phase will determine whether the work performed by the claimants is of equal value to the work performed by employees in ASDA's warehouse and distribution facilities.

At present, the Company cannot predict the number of such claims that may be filed, and cannot reasonably estimate any loss or range of loss that may arise from these proceedings. The Company believes it has substantial factual and legal defenses to these claims, and intends to defend the claims vigorously.

National Prescription Opiate Litigation

In December 2017, the United States Judicial Panel on Multidistrict Litigation ordered consolidated numerous lawsuits filed against a wide array of defendants by various plaintiffs, including counties, cities, healthcare providers, Native American tribes, individuals, and third-party payors, asserting claims generally concerning the impacts of widespread opioid abuse. The consolidated multidistrict litigation is entitled In re National Prescription Opiate Litigation (MDL No. 2804), and is pending in the U.S. District Court for the Northern District of Ohio. The Company is named as a defendant in some of the cases included in this multidistrict litigation, including cases filed by several counties in West Virginia; by healthcare providers in Mississippi, Alabama, Texas, and Florida; and by the St. Croix Chippewa Indians of Wisconsin. Similar cases that name the Company have been filed in state courts by various counties and municipalities; by health care providers; and by various Native American Tribes. The Company cannot predict the number of such claims that may be filed, and cannot reasonably estimate any loss or range of loss that may arise from such claims. The Company believes it has substantial factual and legal defenses to these claims, and intends to defend the claims vigorously.

FCPA Investigation and Related Matters

The Audit Committee (the "Audit Committee") of the Board of Directors of the Company has been conducting an internal investigation into, among other things, alleged violations of the U.S. Foreign Corrupt Practices Act ("FCPA") and other alleged crimes or misconduct in connection with foreign subsidiaries, including Wal-Mart de México, S.A.B. de C.V. ("Walmex"), and whether prior allegations of such violations and/or misconduct were appropriately handled by the Company. The Audit Committee and the Company have engaged outside counsel from a number of law firms and other advisors who are assisting in the on-going investigation of these matters.

The Company has also been conducting a voluntary global review of its policies, practices and internal controls for anti-corruption compliance. The Company is engaged in strengthening its global anti-corruption compliance program through appropriate remedial anti-corruption measures. In November 2011, the Company voluntarily disclosed that investigative activity to the U.S. Department of Justice (the "DOJ") and the Securities and Exchange Commission (the "SEC"). Since the implementation of the global review and the enhanced anti-corruption compliance program, the Audit Committee and the Company have identified or been made aware of additional allegations regarding potential violations of the FCPA. When such allegations have been reported or identified, the Audit Committee and the Company, together with their third party advisors, have conducted inquiries and when warranted based on those inquiries, opened investigations. Inquiries or investigations regarding allegations of potential FCPA violations were commenced in a number of foreign markets where the Company operates, including, but not limited to, Brazil, China and India.

As previously disclosed, the Company is under investigation by the DOJ and the SEC regarding possible violations of the FCPA. The Company has been cooperating with the agencies and discussions have been ongoing regarding the resolution of these matters. These discussions have progressed to a point that the Company can now reasonably estimate a probable loss and has recorded an aggregate accrual of $283 million with respect to these matters (the "Accrual"). As the discussions are continuing, there can be no assurance as to the timing or the terms of the final resolution of these matters.

A number of federal and local government agencies in Mexico have also initiated investigations of these matters. Walmex is cooperating with the Mexican governmental agencies conducting these investigations. Furthermore, lawsuits relating to the matters under investigation have been filed by several of the Company's shareholders against it, certain of its current directors, and certain of its former directors, certain of its former officers and certain of Walmex's former officers.

The Company could be exposed to a variety of negative consequences as a result of the matters noted above. There could be one or more enforcement actions in respect of the matters that are the subject of some or all of the on-going government investigations, and such actions, if brought, may result in judgments, settlements, fines, penalties, injunctions, cease and desist orders, debarment or other relief, criminal convictions and/or penalties and the shareholder lawsuits referenced above may result in judgments against the Company and its current and former directors and officers named in those proceedings. The Company expects that there will be on-going media and governmental interest, including additional news articles from media publications on these matters, which could impact the perception among certain audiences of the Company's role as a corporate citizen.

In addition, the Company has incurred and expects to continue to incur costs in responding to requests for information or subpoenas seeking documents, testimony and other information in connection with the government investigations, in defending the shareholder lawsuits, and in conducting the review and investigations. These costs will be expensed as incurred. For the fiscal years ended January 31, 2018, 2017 and 2016, the Company incurred the following third-party expenses in connection with the FCPA investigation and related matters:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Ongoing inquiries and investigations	$	26	$	80	$	95
Global compliance program and organizational enhancements	14		19		31
Total	$	40	$	99	$	126

The Company does not presently believe that these matters, including the Accrual (and the payment of the Accrual at some point-in-time in the future), will have a material adverse effect on its business, although given the inherent uncertainties in such situations, the Company can provide no assurance that these matters will not be material to its business in the future.

Commitments

12 Months Ended

Jan. 31, 2018

Commitments Disclosure [Abstract]

Commitments disclosure

Commitments

The Company has long-term leases for stores and equipment. Rentals (including amounts applicable to taxes, insurance, maintenance, other operating expenses and contingent rentals) under operating leases and other short-term rental arrangements were $2.9 billion, $2.6 billion and $2.5 billion in fiscal 2018, 2017 and 2016, respectively.

Aggregate minimum annual rentals at January 31, 2018, under non-cancelable leases are as follows:



(Amounts in millions)
Fiscal Year	Operating Leases⁽¹⁾		Capital Lease and Financing Obligations
2019	$	1,933	$	1,039
2020	1,718		987
2021	1,532		942
2022	1,381		843
2023	1,158		696
Thereafter	7,644		5,423
Total minimum rentals	$	15,366	$	9,930
Less estimated executory costs			27
Net minimum lease payments			9,903
Noncash gain on future termination of financing obligation			1,111
Less imputed interest			(3,567		)
Present value of minimum lease payments			$	7,447


(1)	Represents minimum contractual obligation for non-cancelable leases with initial or remaining terms greater than 12 months as of January 31, 2018.

Certain of the Company's leases provide for the payment of contingent rentals based on a percentage of sales. Such contingent rentals were not material for fiscal 2018, 2017 and 2016. Substantially all of the Company's store leases have renewal options, some of which may trigger an escalation in rentals.

Retirement-Related Benefits

12 Months Ended

Jan. 31, 2018

Retirement Benefits [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

Retirement-Related Benefits

The Company offers a 401(k) plan for associates in the U.S. under which eligible associates can begin contributing to the plan immediately upon hire. The Company also offers a 401(k) type plan for associates in Puerto Rico under which associates can begin to contribute generally after one year of employment. Under these plans, after one year of employment, the Company matches 100% of participant contributions up to 6% of annual eligible earnings. The matching contributions immediately vest at 100% for each associate. Participants can contribute up to 50% of their pretax earnings, but not more than the statutory limits.

Associates in international countries who are not U.S. citizens are covered by various defined contribution post-employment benefit arrangements. These plans are administered based upon the legislative and tax requirements in the countries in which they are established.

The following table summarizes the contribution expense related to the Company's defined contribution plans for fiscal 2018, 2017 and 2016:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Defined contribution plans:
U.S.	$	1,124	$	1,064	$	967
International	126		173		179
Total contribution expense for defined contribution plans	$	1,250	$	1,237	$	1,146

Additionally, the Company's subsidiaries in the United Kingdom and Japan have sponsored defined benefit pension plans. The plan in the United Kingdom was overfunded by $97 million at January 31, 2018 and underfunded by $129 million at January 31, 2017. The plan in Japan was underfunded by $184 million and $203 million at January 31, 2018 and 2017, respectively. Overfunded amounts are recorded as assets in the Company's Consolidated Balance Sheets in other assets and deferred charges. Underfunded amounts are recorded as liabilities in the Company's Consolidated Balance Sheets in deferred income taxes and other. Certain other international operations also have defined benefit arrangements that are not significant.

Acquisitions, Disposals, and Related Items	12 Months Ended
Acquisitions, Disposals, and Related Items	Jan. 31, 2018
Equity Method Investments and Joint Ventures [Abstract]
Acquisitions, disposals, and related items	Acquisitions, Disposals and Related Items Other than the jet.com transaction discussed below, the Company completed certain eCommerce acquisitions during fiscal 2018 and 2017, which were immaterial, individually and in the aggregate, to the Company's Consolidated Financial Statements. The following significant transaction primarily impacts the operations of the Company's Walmart U.S. segment: Jet.com, Inc. In September 2016, the Company completed the acquisition of jet.com, a U.S.-based eCommerce company. The integration of jet.com into the Walmart U.S. segment is building upon the current eCommerce foundation, allowing for synergies from talent, logistical operations and access to a broader customer base. The total purchase price for the acquisition was $2.4 billion, net of cash acquired. The allocation of the purchase price includes $1.7 billion in goodwill and $0.6 billion in intangible assets. As part of the transaction, the Company agreed to pay additional compensation of approximately $0.8 billion over a five year period. The following significant transactions impact the operations of the Company's Walmart International segment: Suburbia In April 2017, one of the Company's subsidiaries sold Suburbia, the apparel retail division in Mexico, for $1.0 billion. As part of the sales agreement, the Company is also leasing certain real estate to the purchaser. The sale resulted in a pre-tax gain of $0.7 billion, of which $0.4 billion was recognized in the second quarter of fiscal 2018 in membership and other income, and the remainder was deferred and is being recognized over the lease terms of approximately 20 years. Yihaodian and JD.com, Inc. ("JD") In June 2016, the Company sold certain assets relating to Yihaodian, its eCommerce operations in China, including the Yihaodian brand, website and application, to JD in exchange for Class A ordinary shares of JD representing approximately five percent of JD's outstanding ordinary shares on a fully diluted basis. The $1.5 billion investment in JD is carried at cost and is included in other assets and deferred charges in the accompanying Consolidated Balance Sheets. The sale resulted in the recognition of a $535 million noncash gain, which was included in membership and other income in the accompanying Consolidated Statements of Income. Subsequently, during fiscal 2017, the Company purchased $1.9 billion of additional JD shares classified as available for sale securities, representing an incremental ownership percentage of approximately five percent, for a total ownership of approximately ten percent of JD's outstanding ordinary shares. In fiscal 2016, the Company completed the purchase of all of the remaining noncontrolling interest in Yihaodian for approximately $760 million, using existing cash to complete this transaction.

Restructuring

12 Months Ended

Jan. 31, 2018

Restructuring and Related Activities [Abstract]

Restructuring and Related Activities Disclosure [Text Block]

Restructuring Charges

In the fourth quarter of fiscal 2018, the Company announced several organizational changes to position the business for more efficient growth going forward. As a result, the Company recorded $1.2 billion in pre-tax restructuring charges in fiscal 2018 as follows:



	Fiscal Year Ended January 31, 2018
(Amounts in millions)	Asset Impairment		Severance Costs		Total
Walmart International	$	193	$	43	$	236
Sam's Club	596		69		665
Corporate and support	—		300		300
Total	$	789	$	412	$	1,201

The asset impairment charges primarily relate to the real estate of the Sam's Club closures and the wind-down of the Brazil first-party eCommerce business, which were written down to their estimated fair value. Refer to Note 7 for information on fair value measurement.

The pre-tax restructuring charges of $1.2 billion are classified in operating, selling, general and administrative expenses in the Company's Consolidated Statement of Income for fiscal 2018. At January 31, 2018, substantially all of the severances costs were recorded in accrued liabilities in the Company's Consolidated Balance Sheet. Almost all of these severance costs are expected to be paid during the first quarter of fiscal 2019.

Segments

12 Months Ended

Jan. 31, 2018

Segment Reporting Information, Profit (Loss) [Abstract]

Segments

The Company is engaged in the operation of retail, wholesale and other units, as well as eCommerce websites, located throughout the U.S., Africa, Argentina, Brazil, Canada, Central America, Chile, China, India, Japan, Mexico and the United Kingdom. The Company's operations are conducted in three reportable segments: Walmart U.S., Walmart International and Sam's Club. The Company defines its segments as those operations whose results the chief operating decision maker ("CODM") regularly reviews to analyze performance and allocate resources. The Company sells similar individual products and services in each of its segments. It is impractical to segregate and identify revenues for each of these individual products and services.

The Walmart U.S. segment includes the Company's mass merchant concept in the U.S. operating under the "Walmart" or "Wal-Mart" brands, as well as eCommerce. The Walmart International segment consists of the Company's operations outside of the U.S., including eCommerce. The Sam's Club segment includes the warehouse membership clubs in the U.S., as well as samsclub.com. Corporate and support consists of corporate overhead and other items not allocated to any of the Company's segments.

The Company measures the results of its segments using, among other measures, each segment's net sales and operating income, which includes certain corporate overhead allocations. From time to time, the Company revises the measurement of each segment's operating income, including any corporate overhead allocations, as determined by the information regularly reviewed by its CODM. When the measurement of a segment changes, previous period amounts and balances are reclassified to be comparable to the current period's presentation.

Information for the Company's segments, as well as for Corporate and support, including the reconciliation to income before income taxes, is provided in the following table:



(Amounts in millions)	Walmart U.S.		Walmart International		Sam's Club		Corporate and support			Consolidated
Fiscal Year Ended January 31, 2018
Net sales	$	318,477	$	118,068	$	59,216	$	—		$	495,761
Operating income (loss)	17,869		5,352		982		(3,766		)	20,437
Interest, net										(2,178		)
Loss on extinguishment of debt										(3,136		)
Income before income taxes										$	15,123
Total assets	$	104,347	$	81,549	$	13,418	$	5,208		$	204,522
Depreciation and amortization	3,655		2,601		466		3,807			10,529
Capital expenditures	5,680		2,607		626		1,138			10,051

Fiscal Year Ended January 31, 2017
Net sales	$	307,833	$	116,119	$	57,365	$	—		$	481,317
Operating income (loss)	17,745		5,758		1,671		(2,410		)	22,764
Interest, net										(2,267		)
Income before income taxes										$	20,497
Total assets	$	104,262	$	74,508	$	14,125	$	5,930		$	198,825
Depreciation and amortization	3,298		2,629		487		3,666			10,080
Capital expenditures	6,090		2,697		639		1,193			10,619

Fiscal Year Ended January 31, 2016
Net sales	$	298,378	$	123,408	$	56,828	$	—		$	478,614
Operating income (loss)	19,087		5,346		1,820		(2,148		)	24,105
Interest, net										(2,467		)
Income before income taxes										$	21,638
Total assets	$	103,109	$	73,720	$	13,998	$	8,754		$	199,581
Depreciation and amortization	2,800		2,549		472		3,633			9,454
Capital expenditures	6,728		2,930		695		1,124			11,477

Total revenues, consisting of net sales and membership and other income, and long-lived assets, consisting primarily of property and equipment, net, aggregated by the Company's U.S. and non-U.S. operations for fiscal 2018, 2017 and 2016, are as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Revenues
U.S. operations	$	380,580	$	367,784	$	357,559
Non-U.S. operations	119,763		118,089		124,571
Total revenues	$	500,343	$	485,873	$	482,130

Long-lived assets
U.S. operations	$	81,478	$	82,746	$	82,475
Non-U.S. operations	33,340		31,432		34,041
Total long-lived assets	$	114,818	$	114,178	$	116,516

No individual country outside of the U.S. had total revenues or long-lived assets that were material to the consolidated totals. Additionally, the Company did not generate material total revenues from any single customer.

Subsequent Event

12 Months Ended

Jan. 31, 2018

Subsequent Events [Abstract]

Subsequent events

Subsequent Event

Dividends Declared

On February 20, 2018, the Board of Directors approved the fiscal 2019 annual dividend at $2.08 per share, an increase over the fiscal 2018 dividend of $2.04 per share. For fiscal 2019, the annual dividend will be paid in four quarterly installments of $0.52 per share, according to the following record and payable dates:



Record Date		Payable Date
March 9, 2018		April 2, 2018
May 11, 2018		June 4, 2018
August 10, 2018		September 4, 2018
December 7, 2018		January 2, 2019

Quarterly Financial Data (unaudited)

12 Months Ended

Jan. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Quarterly financial information

Quarterly Financial Data (Unaudited)



	Fiscal Year Ended January 31, 2018
(Amounts in millions, except per share data)	Q1		Q2		Q3		Q4		Total
Total revenues	$	117,542	$	123,355	$	123,179	$	136,267	$	500,343
Net sales	116,526		121,949		122,136		135,150		495,761
Cost of sales	87,688		91,521		91,547		102,640		373,396
Consolidated net income	3,152		3,104		1,904		2,363		10,523
Consolidated net income attributable to Walmart	3,039		2,899		1,749		2,175		9,862
Basic net income per common share attributable to Walmart	1.00		0.96		0.59		0.74		3.29
Diluted net income per common share attributable to Walmart⁽¹⁾	1.00		0.96		0.58		0.73		3.28

	Fiscal Year Ended January 31, 2017
	Q1		Q2		Q3		Q4		Total
Total revenues	$	115,904	$	120,854	$	118,179	$	130,936	$	485,873
Net sales	114,986		119,405		117,176		129,750		481,317
Cost of sales	86,544		89,485		87,484		97,743		361,256
Consolidated net income	3,216		3,889		3,202		3,986		14,293
Consolidated net income attributable to Walmart	3,079		3,773		3,034		3,757		13,643
Basic net income per common share attributable to Walmart	0.98		1.21		0.98		1.23		4.40
Diluted net income per common share attributable to Walmart⁽¹⁾	0.98		1.21		0.98		1.22		4.38


(1)	The sum of quarterly amounts may not agree to annual amount due to rounding and the impact of a decreasing amount of shares outstanding during the year.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Jan. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of operations

General

Walmart Inc. (formerly "Wal-Mart Stores, Inc.") ("Walmart" or the "Company") helps people around the world save money and live better – anytime and anywhere – in retail stores and through eCommerce. Through innovation, the Company is striving to create a customer-centric experience that seamlessly integrates digital and physical shopping into an omni-channel offering that saves time for its customers. Each week, the Company serves nearly 270 million customers who visit its more than 11,700 stores and numerous eCommerce websites under 65 banners in 28 countries. The Company's strategy is to lead on price, invest to differentiate on access, be competitive on assortment and deliver a great experience.

The Company's operations comprise three reportable segments: Walmart U.S., Walmart International and Sam's Club.

Consolidation, policy

Principles of Consolidation

The Consolidated Financial Statements include the accounts of Walmart and its subsidiaries as of and for the fiscal years ended January 31, 2018 ("fiscal 2018"), January 31, 2017 ("fiscal 2017") and January 31, 2016 ("fiscal 2016"). All material intercompany accounts and transactions have been eliminated in consolidation. The Company consolidates variable interest entities where it has been determined that the Company is the primary beneficiary of those entities' operations. Investments in unconsolidated affiliates, which are 50% or less owned and do not otherwise meet consolidation requirements, are accounted for primarily using the equity method. These equity method investments are immaterial to the Company's Consolidated Financial Statements.

The Company's Consolidated Financial Statements are based on a fiscal year ending on January 31 for the United States ("U.S.") and Canadian operations. The Company consolidates all other operations generally using a one-month lag and based on a calendar year. There were no significant intervening events during the month of January 2018 related to the operations consolidated using a lag that materially affected the Consolidated Financial Statements.

Use of estimates, policy

Use of Estimates

The Consolidated Financial Statements have been prepared in conformity with U.S. generally accepted accounting principles. Those principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities. Management's estimates and assumptions also affect the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates.

Cash and cash equivalents, policy

Cash and Cash Equivalents

The Company considers investments with a maturity when purchased of three months or less to be cash equivalents. All credit card, debit card and electronic transfer transactions that process in less than seven days are classified as cash and cash equivalents. The amounts due from banks for these transactions classified as cash and cash equivalents totaled $1.6 billion and $1.5 billion at January 31, 2018 and 2017, respectively. In addition, cash and cash equivalents included restricted cash of $300 million and $265 million at January 31, 2018 and 2017, respectively, which was primarily related to cash collateral holdings from various counterparties, as required by certain derivative and trust agreements.

The Company's cash balances are held in various locations around the world. Substantially all of the Company's $6.8 billion of cash and cash equivalents at January 31, 2018, was held outside of the U.S. Of the Company's $6.9 billion of cash and cash equivalents at January 31, 2017, $5.9 billion was held outside of the U.S. Cash and cash equivalents held outside of the U.S. are generally utilized to support liquidity needs in the Company's non-U.S. operations.

The Company uses intercompany financing arrangements in an effort to ensure cash can be made available in the country in which it is needed with the minimum cost possible. Management does not believe it will be necessary to repatriate earnings held outside of the U.S. and anticipates the Company's domestic liquidity needs will be met through cash flows provided by domestic operating activities, supplemented with long-term debt and short-term borrowings. Accordingly, the Company intends, with only certain exceptions, to continue to indefinitely reinvest the Company's earnings held outside of the U.S. in its foreign operations. As part of the U.S. tax reform enacted on December 22, 2017, the Company is currently assessing the impact of the new legislation, which can in turn, impact its assertion regarding any potential future repatriation. If the Company's intentions with respect to reinvestment were to change, most of the amounts held within the Company's foreign operations could be repatriated to the U.S., although any repatriation under new U.S. tax laws could be subject to incremental withholding taxes. The Company does not expect current local laws, other existing limitations or potential taxes on anticipated future repatriations of earnings held outside of the U.S. to have a material effect on the Company's overall liquidity, financial condition or results of operations.

As of January 31, 2018 and 2017, cash and cash equivalents of approximately $1.4 billion and $1.0 billion, respectively, may not be freely transferable to the U.S. due to local laws or other restrictions.

Receivables, policy

Receivables

Receivables are stated at their carrying values, net of a reserve for doubtful accounts. Receivables consist primarily of amounts due from:


•	insurance companies resulting from pharmacy sales;


•	banks for customer credit and debit cards and electronic bank transfers that take in excess of seven days to process;


•	suppliers for marketing or incentive programs; and


•	real estate transactions.

Inventory, policy

Inventories

The Company values inventories at the lower of cost or market as determined primarily by the retail inventory method of accounting, using the last-in, first-out ("LIFO") method for Walmart U.S. segment's inventories. The inventory at the Walmart International segment is valued primarily by the retail inventory method of accounting, using the first-in, first-out ("FIFO") method. The retail inventory method of accounting results in inventory being valued at the lower of cost or market, since permanent markdowns are immediately recorded as a reduction of the retail value of inventory. The inventory at the Sam's Club segment is valued using the weighted-average cost LIFO method. At January 31, 2018 and January 31, 2017, the Company's inventories valued at LIFO approximated those inventories as if they were valued at FIFO.

Assets held for sale, policy

Assets Held for Sale

Assets held for sale represent components and businesses that meet accounting requirements to be classified as held for sale and are presented as single asset and liability amounts in the Company's financial statements with a valuation allowance, if necessary, to recognize the net carrying amount at the lower of cost or fair value, less cost to sell. The Company reviews all businesses and assets held for sale each reporting period to determine whether the existing carrying amounts are fully recoverable in comparison to estimated fair values. As of January 31, 2018 and 2017, immaterial amounts for assets and liabilities held for sale were classified within prepaid expenses and other and accrued liabilities, respectively, in the Consolidated Balance Sheets.

Property, plant and equipment, policy

Property and Equipment

Property and equipment are initially recorded at cost. Gains or losses on disposition are recognized as earned or incurred. Costs of major improvements are capitalized, while costs of normal repairs and maintenance are charged to expense as incurred. The following table summarizes the Company's property and equipment balances and includes the estimated useful lives that are generally used to depreciate the assets on a straight-line basis:



		As of January 31,
(Amounts in millions)	Estimated Useful Lives	2018			2017
Land	N/A	$	25,298		$	24,801
Buildings and improvements	3-40 years	101,155			98,547
Fixtures and equipment	1-30 years	52,695			48,998
Transportation equipment	3-15 years	2,387			2,845
Construction in progress	N/A	3,619			4,301
Property and equipment		$	185,154		$	179,492
Accumulated depreciation		(77,479		)	(71,782		)
Property and equipment, net		$	107,675		$	107,710

Leasehold improvements are depreciated or amortized over the shorter of the estimated useful life of the asset or the remaining expected lease term. Total depreciation and amortization expense for property and equipment, property under financing obligations and property under capital leases for fiscal 2018, 2017 and 2016 was $10.5 billion, $10.1 billion and $9.5 billion, respectively.

Lease, policy

Leases

The Company estimates the expected term of a lease by assuming the exercise of renewal options where an economic penalty exists that would preclude the abandonment of the lease at the end of the initial non-cancelable term and the exercise of such renewal is at the sole discretion of the Company. The expected term is used in the determination of whether a store or club lease is a capital or operating lease and in the calculation of straight-line rent expense. Additionally, the useful life of leasehold improvements is limited by the expected lease term or the economic life of the asset, whichever is shorter. If significant expenditures are made for leasehold improvements late in the expected term of a lease and renewal is reasonably assured, the useful life of the leasehold improvement is limited to the end of the renewal period or economic life of the asset, whichever is shorter. Rent abatements and escalations are considered in the calculation of minimum lease payments in the Company's capital lease tests and in determining straight-line rent expense for operating leases.

The Company is often involved in the construction of its leased stores. In certain cases, payments made for certain structural components included in the lessor's construction of the leased assets result in the Company being deemed the owner of the leased assets for accounting purposes. As a result, the payments, regardless of the significance, are automatic indicators of ownership and require the Company to capitalize the lessor's total project cost with a corresponding financing obligation. Upon completion of the lessor's project, the Company performs a sale-leaseback analysis to determine if these assets and the related financing obligation can be derecognized from the Company's Consolidated Balance Sheets. If the Company is deemed to have "continuing involvement," the leased assets and the related financing obligation remain on the Company's Consolidated Balance Sheets and are generally amortized over the lease term. At the end of the lease term, including exercise of any renewal options, the net remaining financing obligation over the net carrying value of the fixed asset will be recognized as a non-cash gain on sale of the property.

Impairment or disposal of long-lived assets, policy

Long-Lived Assets

Long-lived assets are initially recorded at cost. Management reviews long-lived assets for indicators of impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. The evaluation is performed at the lowest level of identifiable cash flows, which is at the individual store or club level. Undiscounted cash flows expected to be generated by the related assets are estimated over the assets' useful lives based on updated projections. If the evaluation indicates that the carrying amount of the assets may not be recoverable, any potential impairment is measured based upon the fair value of the related asset or asset group as determined by an appropriate market appraisal or other valuation technique.

Goodwill and intangible assets, policy

Goodwill and Other Acquired Intangible Assets

Goodwill represents the excess of the purchase price over the fair value of net assets acquired in business combinations and is allocated to the appropriate reporting unit when acquired. Other acquired intangible assets are stated at the fair value acquired as determined by a valuation technique commensurate with the intended use of the related asset. Goodwill and indefinite-lived intangible assets are not amortized; rather, they are evaluated for impairment annually and whenever events or changes in circumstances indicate that the value of the asset may be impaired. Definite-lived intangible assets are considered long-lived assets and are amortized on a straight-line basis over the periods that expected economic benefits will be provided.

Goodwill is evaluated for impairment using either a qualitative or quantitative approach for each of the Company's reporting units. Generally, a qualitative assessment is first performed to determine whether a quantitative goodwill impairment test is necessary. If management determines, after performing an assessment based on the qualitative factors, that the fair value of the reporting unit is more likely than not less than the carrying amount, or that a fair value of the reporting unit substantially in excess of the carrying amount cannot be assured, then a quantitative goodwill impairment test would be required. The quantitative test for goodwill impairment is performed by determining the fair value of the related reporting units. Fair value is measured based on the discounted cash flow method and relative market-based approaches. After evaluation, management determined the fair value of each reporting unit is greater than the carrying amount and, accordingly, the Company has not recorded any impairment charges related to goodwill.

The following table reflects goodwill activity, by reportable segment, for fiscal 2018 and 2017:



(Amounts in millions)	Walmart U.S.		Walmart International			Sam's Club		Total
Balances as of February 1, 2016	$	461	$	15,921		$	313	$	16,695
Changes in currency translation and other	—		(1,433		)	—		(1,433		)
Acquisitions⁽¹⁾	1,775		—			—		1,775
Balances as of January 31, 2017	2,236		14,488			313		17,037
Changes in currency translation and other	—		996			—		996
Acquisitions	209		—			—		209
Balances as of January 31, 2018	$	2,445	$	15,484		$	313	$	18,242


(1)	Goodwill recorded for fiscal 2017 Walmart U.S. acquisitions primarily relates to Jet.com, Inc. ("jet.com").

Indefinite-lived intangible assets are included in other assets and deferred charges in the Company's Consolidated Balance Sheets. These assets are evaluated for impairment based on their fair values using valuation techniques which are updated annually based on the most recent variables and assumptions. There were no significant impairment charges related to indefinite-lived intangible assets recorded for fiscal 2018, 2017 and 2016.

Self Insurance Reserve [Policy Text Block]

Self Insurance Reserves

The Company self-insures a number of risks, including, but not limited to, workers' compensation, general liability, auto liability, product liability and certain employee-related healthcare benefits. Standard actuarial procedures and data analysis are used to estimate the liabilities associated with these risks as of the balance sheet date on an undiscounted basis. The recorded liabilities reflect the ultimate cost for claims incurred but not paid and any estimable administrative run-out expenses related to the processing of these outstanding claim payments. On a regular basis, the liabilities are evaluated for appropriateness with claims reserve valuations provided by independent third-party actuaries. To limit exposure to some risks, the Company maintains insurance coverage with varying limits and retentions, including stop-loss insurance coverage for workers' compensation, general liability and auto liability.

Income tax, policy

Income Taxes

Income taxes are accounted for under the balance sheet method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases ("temporary differences"). Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rate is recognized in income in the period that includes the enactment date.

Deferred tax assets are evaluated for future realization and reduced by a valuation allowance to the extent that a portion is not more likely than not to be realized. Many factors are considered when assessing whether it is more likely than not that the deferred tax assets will be realized, including recent cumulative earnings, expectations of future taxable income, carryforward periods, and other relevant quantitative and qualitative factors. The recoverability of the deferred tax assets is evaluated by assessing the adequacy of future expected taxable income from all sources, including reversal of taxable temporary differences, forecasted operating earnings and available tax planning strategies. These sources of income rely heavily on estimates.

In determining the provision for income taxes, an annual effective income tax rate is used based on annual income, permanent differences between book and tax income, and statutory income tax rates. Discrete events such as audit settlements or changes in tax laws are recognized in the period in which they occur.

The Company records a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The Company records interest and penalties related to unrecognized tax benefits in interest expense and operating, selling, general and administrative expenses, respectively, in the Company's Consolidated Statements of Income. Refer to Note 9 for additional income tax disclosures.

Revenue recognition, policy

Revenue Recognition

Sales

The Company recognizes sales revenue, net of sales taxes and estimated sales returns, at the time it sells merchandise to the customer. eCommerce sales include shipping revenue and are recorded upon delivery to the customer. Additionally, estimated sales returns are calculated using historical experience of actual returns as a percent of sales.

Membership Fee Revenue

The Company recognizes membership fee revenue both in the U.S. and internationally over the term of the membership, which is typically 12 months. The following table summarizes membership fee activity for fiscal 2018, 2017 and 2016:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018			2017			2016
Deferred membership fee revenue, beginning of year	$	743		$	744		$	759
Cash received from members	1,398			1,371			1,333
Membership fee revenue recognized	(1,411		)	(1,372		)	(1,348		)
Deferred membership fee revenue, end of year	$	730		$	743		$	744

Membership fee revenue is included in membership and other income in the Company's Consolidated Statements of Income. The deferred membership fee is included in accrued liabilities in the Company's Consolidated Balance Sheets.

Gift Cards

Customer purchases of gift cards, to be utilized in our stores or on our eCommerce websites, are not recognized as revenue until the card is redeemed and the customer purchases merchandise using the gift card. Gift cards in the U.S. and some countries do not carry an expiration date; therefore, customers and members can redeem their gift cards for merchandise indefinitely. Gift cards in some foreign countries where the Company does business have expiration dates. A certain number of gift cards, both with and without expiration dates, will not be fully redeemed. Management estimates unredeemed gift cards and recognizes revenue for these amounts when it is determined the likelihood of redemption is remote. Management periodically reviews and updates its estimates.

Financial and Other Services

The Company recognizes revenue from service transactions at the time the service is performed. Generally, revenue from services is classified as a component of net sales in the Company's Consolidated Statements of Income.

Cost of sales, policy

Cost of Sales

Cost of sales includes actual product cost, the cost of transportation to the Company's distribution facilities, stores and clubs from suppliers, the cost of transportation from the Company's distribution facilities to the stores, clubs and customers and the cost of warehousing for the Sam's Club segment and import distribution centers. Cost of sales is reduced by supplier payments that are not a reimbursement of specific, incremental and identifiable costs.

Payments from suppliers policy

Payments from Suppliers

The Company receives consideration from suppliers for various programs, primarily volume incentives, warehouse allowances and reimbursements for specific programs such as markdowns, margin protection, advertising and supplier-specific fixtures. Payments from suppliers are accounted for as a reduction of cost of sales, except in certain limited situations when the payment is a reimbursement of specific, incremental and identifiable costs, and are recognized in the Company's Consolidated Statements of Income when the related inventory is sold.

Selling, general and administrative expenses, policy

Operating, Selling, General and Administrative Expenses

Operating, selling, general and administrative expenses include all operating costs of the Company, except cost of sales, as described above. As a result, the majority of the cost of warehousing and occupancy for the Walmart U.S. and Walmart International segments' distribution facilities is included in operating, selling, general and administrative expenses. Because the Company only includes a portion of the cost of its Walmart U.S. and Walmart International segments' distribution facilities in cost of sales, its gross profit and gross profit as a percentage of net sales may not be comparable to those of other retailers that may include all costs related to their distribution facilities in cost of sales and in the calculation of gross profit.

Advertising costs, policy

Advertising Costs

Advertising costs are expensed as incurred, consist primarily of print, television and digital advertisements and are recorded in operating, selling, general and administrative expenses in the Company's Consolidated Statements of Income. In certain limited situations, reimbursements from suppliers that are for specific, incremental and identifiable advertising costs are recognized as a reduction of advertising costs in operating, selling, general and administrative expenses. Advertising costs were $3.1 billion, $2.9 billion and $2.5 billion for fiscal 2018, 2017 and 2016, respectively.

Start-up activities, cost policy

Pre-Opening Costs

The cost of start-up activities, including organization costs, related to new store openings, store remodels, relocations, expansions and conversions are expensed as incurred and included in operating, selling, general and administrative expenses in the Company's Consolidated Statements of Income. Pre-opening costs totaled $106 million, $131 million and $271 million for fiscal 2018, 2017 and 2016, respectively.

Foreign currency transactions and translations policy

Currency Translation

The assets and liabilities of all international subsidiaries are translated from the respective local currency to the U.S. dollar using exchange rates at the balance sheet date. Related translation adjustments are recorded as a component of accumulated other comprehensive loss. The Company's Consolidated Statements of Income of all international subsidiaries are translated from the respective local currencies to the U.S. dollar using average exchange rates for the period covered by the income statements.

New accounting pronouncements, policy

Recent Accounting Pronouncements

Pronouncements Adopted in Fiscal 2018

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-09, Compensation–Stock Compensation (Topic 718), which is intended to simplify accounting for share-based payment transactions. The ASU changed several aspects of the accounting for share-based payment award transactions, including accounting for income taxes, forfeitures and minimum statutory tax withholding requirements. Management adopted this ASU beginning February 1, 2017, and as a result, reclassified an immaterial amount from operating activities to financing activities in the Company's prior year consolidated cash flows.

On December 22, 2017, the Securities and Exchange Commission (SEC) staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act ("SAB 118"), in response to the Tax Cuts and Jobs Act of 2017 ("Tax Act"). The Company has elected to record provisional amounts, as allowed by SAB 118, during a measurement period not to extend beyond one year of the enactment date. Management expects to complete the analysis within the measurement period in accordance with SAB 118.

Pronouncements to Be Adopted in the Year Ending January 31, 2019 ("fiscal 2019")

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU represents a single comprehensive model to recognize revenue to depict the transfer of promised goods or services to a customer at an amount that reflects the consideration it expects to be entitled to in exchange for those goods or services. The Company adopted this ASU on February 1, 2018, under the modified retrospective approach, which resulted in an immaterial cumulative adjustment to retained earnings. Also, this ASU will require additional disclosures.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments–Overall (Topic 825), which updates certain aspects of recognition, measurement, presentation and disclosure of financial instruments. This ASU primarily impacts the Company's accounting for its investment in JD.com ("JD"). The Company adopted this ASU on February 1, 2018, which resulted in a cumulative positive adjustment to retained earnings of approximately $2.9 billion based on the market value of our investment in JD at January 31, 2018. The retained earnings adjustment relates to both the available for sale portion and the cost portion of the investment. Beginning February 1, 2018, the adoption requires the remeasurement of our investment in JD due to observable price changes and impairments, if any, to be recorded through the Consolidated Statement of Income, introducing volatility to reported net income.

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows–Restricted Cash (Topic 230), which requires restricted cash to be included with cash and cash equivalents when reconciling the beginning and ending amounts on the statement of cash flows. The Company adopted this ASU on February 1, 2018, which, while immaterial, will modify the Company's presentation of Consolidated Statements of Cash Flows. At January 31, 2018, the Company had restricted cash recorded in line items other than cash and cash equivalents of $258 million.

In February 2018, the FASB issued Accounting Standards Update ASU 2018-02, Income Statement–Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The ASU provides that the stranded tax effects from the Tax Act in accumulated other comprehensive loss may be reclassified to retained earnings. The ASU is effective February 1, 2019, with early adoption permitted. Management anticipates early adopting this optional standard and is evaluating the effect on the Company's consolidated financial statements.

Other Pronouncements Being Evaluated

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which requires lease assets and liabilities to be recorded on the balance sheet. Certain qualitative and quantitative disclosures are also required, as well as retrospective recognition and measurement of impacted leases. The Company will adopt this ASU on February 1, 2019 and is implementing new lease systems in connection with the adoption. Management is progressing with implementation and continuing to evaluate the effect to the Company's consolidated financial statements and disclosures. Management expects a material impact to the Company's Consolidated Balance Sheet.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments–Credit Losses (Topic 326), which modifies the measurement of expected credit losses of certain financial instruments. The Company will adopt this ASU on February 1, 2020. Management is currently evaluating this ASU to determine its impact to the Company's consolidated financial statements.

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jan. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Property, plant and equipment

The following table summarizes the Company's property and equipment balances and includes the estimated useful lives that are generally used to depreciate the assets on a straight-line basis:



		As of January 31,
(Amounts in millions)	Estimated Useful Lives	2018			2017
Land	N/A	$	25,298		$	24,801
Buildings and improvements	3-40 years	101,155			98,547
Fixtures and equipment	1-30 years	52,695			48,998
Transportation equipment	3-15 years	2,387			2,845
Construction in progress	N/A	3,619			4,301
Property and equipment		$	185,154		$	179,492
Accumulated depreciation		(77,479		)	(71,782		)
Property and equipment, net		$	107,675		$	107,710

Schedule of goodwill

The following table reflects goodwill activity, by reportable segment, for fiscal 2018 and 2017:



(Amounts in millions)	Walmart U.S.		Walmart International			Sam's Club		Total
Balances as of February 1, 2016	$	461	$	15,921		$	313	$	16,695
Changes in currency translation and other	—		(1,433		)	—		(1,433		)
Acquisitions⁽¹⁾	1,775		—			—		1,775
Balances as of January 31, 2017	2,236		14,488			313		17,037
Changes in currency translation and other	—		996			—		996
Acquisitions	209		—			—		209
Balances as of January 31, 2018	$	2,445	$	15,484		$	313	$	18,242


(1)	Goodwill recorded for fiscal 2017 Walmart U.S. acquisitions primarily relates to Jet.com, Inc. ("jet.com").

Deferred revenue, by arrangement, disclosure

The following table summarizes membership fee activity for fiscal 2018, 2017 and 2016:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018			2017			2016
Deferred membership fee revenue, beginning of year	$	743		$	744		$	759
Cash received from members	1,398			1,371			1,333
Membership fee revenue recognized	(1,411		)	(1,372		)	(1,348		)
Deferred membership fee revenue, end of year	$	730		$	743		$	744

Net Income Per Common Share (Tables)

12 Months Ended

Jan. 31, 2018

Earnings Per Share [Abstract]

Schedule of calculation of numerator and denominator in earnings per share

The following table provides a reconciliation of the numerators and denominators used to determine basic and diluted net income per common share attributable to Walmart:



	Fiscal Years Ended January 31,
(Amounts in millions, except per share data)	2018			2017			2016
Numerator
Consolidated net income	$	10,523		$	14,293		$	15,080
Consolidated net income attributable to noncontrolling interest	(661		)	(650		)	(386		)
Consolidated net income attributable to Walmart	$	9,862		$	13,643		$	14,694

Denominator
Weighted-average common shares outstanding, basic	2,995			3,101			3,207
Dilutive impact of stock options and other share-based awards	15			11			10
Weighted-average common shares outstanding, diluted	3,010			3,112			3,217

Net income per common share attributable to Walmart
Basic	$	3.29		$	4.40		$	4.58
Diluted	3.28			4.38			4.57

Shareholders' Equity (Tables)

12 Months Ended

Jan. 31, 2018

Share-based Compensation [Abstract]

Schedule of share-based compensation expense by award type

The following table summarizes the Company's share-based compensation expense by award type:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Restricted stock and performance share units	$	234	$	237	$	134
Restricted stock units	368		332		292
Other	24		27		22
Share-based compensation expense	$	626	$	596	$	448

Schedule of restricted stock and performance share awards and restricted stock rights activity

The following table shows the activity for restricted stock and performance share units and restricted stock units during fiscal 2018:



	Restricted Stock and Performance Share Units⁽¹⁾				Restricted Stock Units
(Shares in thousands)	Shares		Weighted-Average Grant-Date Fair Value Per Share		Shares		Weighted-Average Grant-Date Fair Value Per Share
Outstanding at February 1, 2017	9,077		$	68.61	24,276		$	65.52
Granted	3,598		74.73		8,570		67.54
Vested/exercised	(2,525	)	71.55		(5,440	)	63.02
Forfeited or expired	(1,592	)	68.59		(3,253	)	66.28
Outstanding at January 31, 2018	8,558		$	70.47	24,153		$	66.69


(1)	Assumes payout rate at 100% for Performance Share Units.

Schedule of restricted stock and performance share awards and restricted stock rights

The following table includes additional information related to restricted stock and performance share units and restricted stock units:



	Fiscal Years Ended January 31,
(Amounts in millions, except years)	2018		2017		2016
Fair value of restricted stock and performance share units vested	$	181	$	149	$	142
Fair value of restricted stock units vested	344		261		237
Unrecognized compensation cost for restricted stock and performance share units	291		211		133
Unrecognized compensation cost for restricted stock units	972		986		628
Weighted average remaining period to expense for restricted stock and performance share units (years)	1.2		1.3		1.3
Weighted average remaining period to expense for restricted stock units (years)	1.8		1.9		1.7

Schedule of Company's share repurchases

The following table provides, on a settlement date basis, the number of shares repurchased, average price paid per share and total amount paid for share repurchases for fiscal 2018, 2017 and 2016:



	Fiscal Years Ended January 31,
(Amounts in millions, except per share data)	2018		2017		2016
Total number of shares repurchased	104.9		119.9		62.4
Average price paid per share	$	79.11	$	69.18	$	65.90
Total cash paid for share repurchases	$	8,296	$	8,298	$	4,112

Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Jan. 31, 2018

Other Comprehensive Income (Loss), Tax [Abstract]

Composition of accumulated other comprehensive income (loss)

The following table provides the changes in the composition of total accumulated other comprehensive loss for fiscal 2018, 2017 and 2016:



(Amounts in millions and net of income taxes)	Currency Translation and Other			Net Investment Hedges			Unrealized Gain on Available-for-Sale Securities		Cash Flow Hedges			Minimum Pension Liability			Total
Balances as of February 1, 2015	$	(7,011	)	$	656		$	—	$	(134	)	$	(679	)	$	(7,168	)
Other comprehensive income (loss) before reclassifications, net	(4,679		)	366			—		(217		)	96			(4,434		)
Amounts reclassified from accumulated other comprehensive loss, net	—			—			—		15			(10		)	5
Balances as of January 31, 2016	(11,690		)	1,022			—		(336		)	(593		)	(11,597		)
Other comprehensive income (loss) before reclassifications, net	(2,817		)	413			145		(22		)	(389		)	(2,670		)
Amounts reclassified from accumulated other comprehensive loss, net	—			—			—		43			(8		)	35
Balances as of January 31, 2017	(14,507		)	1,435			145		(315		)	(990		)	(14,232		)
Other comprehensive income (loss) before reclassifications, net	2,345			(405		)	1,501		436			83			3,960
Amounts reclassified from accumulated other comprehensive loss, net	26			—			—		1			64			91
Balances as of January 31, 2018	$	(12,136	)	$	1,030		$	1,646	$	122		$	(843	)	$	(10,181	)

Accrued Liabilities (Tables)

12 Months Ended

Jan. 31, 2018

Accrued Liabilities [Abstract]

Schedule of accrued liabilities

The Company's accrued liabilities consist of the following:



	As of January 31,
(Amounts in millions)	2018		2017
Accrued wages and benefits⁽¹⁾	$	6,998	$	6,105
Self-insurance⁽²⁾	3,737		3,922
Accrued non-income taxes⁽³⁾	3,073		2,816
Deferred gift card revenue	2,017		1,856
Other⁽⁴⁾	6,297		5,955
Total accrued liabilities	$	22,122	$	20,654


(1)	Accrued wages and benefits include accrued wages, salaries, vacation, bonuses and other incentive plans.


(2)	Self-insurance consists of insurance-related liabilities, such as workers' compensation, general liability, auto liability, product liability and certain employee-related healthcare benefits.


(3)	Accrued non-income taxes include accrued payroll, value added, sales and miscellaneous other taxes.


(4)	Other accrued liabilities consist of various items such as maintenance, utilities, advertising, interest and legal contingencies.

Short-term Borrowings and Long-term Debt (Tables)

12 Months Ended

Jan. 31, 2018

Debt Instrument [Line Items]

Schedule of Line of Credit Facilities

These committed lines of credit are summarized in the following table:



	As of January 31,
	2018						2017
(Amounts in millions)	Available		Drawn		Undrawn		Available		Drawn		Undrawn
Five-year credit facility⁽¹⁾	$	5,000	$	—	$	5,000	$	5,000	$	—	$	5,000
364-day revolving credit facility⁽¹⁾	7,500		—		7,500		7,500		—		7,500
Total	$	12,500	$	—	$	12,500	$	12,500	$	—	$	12,500


(1)	In May 2017, the Company renewed and extended its existing five-year credit facility and its existing 364-day revolving credit facility, both of which are used to support its commercial paper program.

Schedule of Long-term Debt Instruments

The Company's long-term debt, which includes the fair value instruments further discussed in Note 8, consists of the following:



		January 31, 2018				January 31, 2017
(Amounts in millions)	Maturity Dates By Fiscal Year	Amount			Average Rate⁽¹⁾	Amount			Average Rate⁽¹⁾
Unsecured debt
Fixed	2019 - 2048	$	24,540		3.9%	$	30,500		4.7%
Variable	2019 - 2020	800			4.1%	500			5.5%
Total U.S. dollar denominated		25,340				31,000
Fixed	2023 - 2030	3,101			3.3%	2,674			3.3%
Variable		—				—
Total Euro denominated		3,101				2,674
Fixed	2031 - 2039	3,801			5.4%	4,370			5.3%
Variable		—				—
Total Sterling denominated		3,801				4,370
Fixed	2021 - 2028	1,655			0.4%	88			1.6%
Variable		—				—
Total Yen denominated		1,655				88
Total unsecured debt		33,897				38,132
Total other⁽²⁾		(114		)		139
Total debt		33,783				38,271
Less amounts due within one year		(3,738		)		(2,256		)
Long-term debt		$	30,045			$	36,015


(1)	The average rate represents the weighted-average stated rate for each corresponding debt category, based on year-end balances and year-end interest rates. Interest costs are also impacted by certain derivative financial instruments described in Note 8.


(2)	Includes deferred loan costs, discounts, fair value hedges, foreign-held debt and secured debt. At January 31, 2018 and 2017 the Company had secured debt in the amount of $10 million and $14 million, respectively, which was collateralized by property that had an aggregate carrying amount of approximately $101 million and $82 million, respectively.

Schedule of Maturities of Long-term Debt

Annual maturities of long-term debt during the next five years and thereafter are as follows:



(Amounts in millions)	Annual
Fiscal Year	Maturities
2019	$	3,733
2020	1,914
2021	3,336
2022	607
2023	2,934
Thereafter	21,259
Total	$	33,783

Schedule of Fiscal Year 2018 Debt Issuances

Information on significant long-term debt issued during fiscal 2018 is as follows:

(Amounts in millions)

Issue Date

Principal Amount

Maturity Date

Fixed vs. Floating

Interest Rate

Proceeds

July 18, 2017

70,000 JPY

July 15, 2022

Fixed

0.183%

$

619

July 18, 2017

40,000 JPY

July 18, 2024

Fixed

0.298%

354

July 18, 2017

60,000 JPY

July 16, 2027

Fixed

0.520%

530

October 20, 2017

300 USD

October 9, 2019

Floating

299

October 20, 2017

1,200 USD

October 9, 2019

Fixed

1.750%

1,198

October 20, 2017

1,250 USD

December 15, 2020

Fixed

1.900%

1,245

October 20, 2017

1,250 USD

December 15, 2022

Fixed

2.350%

1,245

October 20, 2017

1,000 USD

December 15, 2024

Fixed

2.650%

996

October 20, 2017

1,000 USD

December 15, 2047

Fixed

3.625%

990

Total

$

7,476

Schedule of Fiscal 2018 and 2017 Debt Maturities

The following table provides details of debt repayments during fiscal 2018:



(Amounts in millions)
Maturity Date	Principal Amount	Fixed vs. Floating	Interest Rate	Repayment⁽¹⁾
April 5, 2017	1,000 USD	Fixed	5.375%	$	1,000
April 21, 2017	500 USD	Fixed	1.000%	500
Total repayment of matured debt				1,500

December 15, 2018	1,000 USD	Fixed	1.950%	276
February 1, 2019	500 USD	Fixed	4.125%	136
July 8, 2020	1,500 USD	Fixed	3.625%	661
October 25, 2020	1,750 USD	Fixed	3.250%	553
April 15, 2021	1,000 USD	Fixed	4.250%	491
October 16, 2023	250 USD	Fixed	6.750%	98
April 5, 2027	750 USD	Fixed	5.875%	267
February 15, 2030	500 USD	Fixed	7.550%	412
September 4, 2035	2,500 USD	Fixed	5.250%	532
September 28, 2035	1,000 GBP	Fixed	5.250%	260
August 17, 2037	3,000 USD	Fixed	6.500%	1,700
April 15, 2038	2,000 USD	Fixed	6.200%	1,081
January 19, 2039	1,000 GBP	Fixed	4.875%	851
April 2, 2040	1,250 USD	Fixed	5.625%	499
July 9, 2040	750 USD	Fixed	4.875%	372
October 25, 2040	1,250 USD	Fixed	5.000%	731
April 15, 2041	2,000 USD	Fixed	5.625%	1,082
April 11, 2043	1,000 USD	Fixed	4.000%	291
October 2, 2043	750 USD	Fixed	4.750%	481
April 22, 2044	1,000 USD	Fixed	4.300%	498
Total repayment of extinguished debt				11,272
Total				$	12,772

(1) Represents portion of the principal amount repaid during fiscal 2018.

In connection with extinguishing debt, the Company paid premiums of approximately $3.1 billion during fiscal 2018, resulting in a loss on extinguishment of debt of approximately $3.1 billion.

During fiscal 2017, the following long-term debt matured and was repaid:



(Amounts in millions)
Maturity Date	Principal Amount	Fixed vs. Floating	Interest Rate	Repayment
April 11, 2016	1,000 USD	Fixed	0.600%	$	1,000
April 15, 2016	1,000 USD	Fixed	2.800%	1,000
				$	2,000

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644

+ Details

Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2018

Fair Value Disclosures [Abstract]

Notional amounts and fair values of derivatives

As of January 31, 2018 and 2017, the notional amounts and fair values of these derivatives were as follows:



	January 31, 2018					January 31, 2017
(Amounts in millions)	Notional Amount		Fair Value			Notional Amount		Fair Value
Receive fixed-rate, pay variable-rate interest rate swaps designated as fair value hedges	$	4,000	$	(91	)	$	5,000	$	(4	)
Receive fixed-rate, pay fixed-rate cross-currency swaps designated as net investment hedges	2,250		208			2,250		471
Receive fixed-rate, pay fixed-rate cross-currency swaps designated as cash flow hedges	4,523		205			3,957		(618		)
Total	$	10,773	$	322		$	11,207	$	(151	)

Available-for-sale securities

The cost basis and fair value of the Company's available-for-sale securities as of January 31, 2018 and 2017, are as follows:



	January 31, 2018				January 31, 2017
(Amounts in millions)	Cost Basis		Fair Value		Cost Basis		Fair Value
Available-for-sale securities	$	1,901	$	3,547	$	1,901	$	2,046

Carrying value and fair value of long-term debt

The carrying value and fair value of the Company's long-term debt as of January 31, 2018 and 2017, are as follows:



	January 31, 2018				January 31, 2017
(Amounts in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt, including amounts due within one year	$	33,783	$	38,766	$	38,271	$	44,602

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Derivative Financial Instruments (Tables)

12 Months Ended

Jan. 31, 2018

Summary of Derivative Instruments [Abstract]

Balance Sheet Classification Of Financial Instruments

The Company's derivative instruments, as well as its nonderivative debt instruments designated and qualifying as net investment hedges, were classified as follows as of January 31, 2018 and 2017 in the Company's Consolidated Balance Sheets:



	January 31, 2018						January 31, 2017
(Amounts in millions)	Fair Value Instruments		Net Investment Instruments		Cash Flow Instruments		Fair Value Instruments		Net Investment Instruments		Cash Flow Instruments
Derivative instruments
Derivative assets:
Other assets and deferred charges	$	—	$	208	$	300	$	8	$	471	$	—

Derivative liabilities:
Deferred income taxes and other	91		—		95		12		—		618

Nonderivative hedging instruments
Long-term debt	—		4,041		—		—		3,209		—

Taxes (Tables)

12 Months Ended

Jan. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of income before income taxes

The components of income before income taxes are as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
U.S.	$	10,722	$	15,680	$	16,685
Non-U.S.	4,401		4,817		4,953
Total income before income taxes	$	15,123	$	20,497	$	21,638

Schedule of income tax provision

A summary of the provision for income taxes is as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018			2017			2016
Current:
U.S. federal	$	2,998		$	3,454		$	5,562
U.S. state and local	405			495			622
International	1,377			1,510			1,400
Total current tax provision	4,780			5,459			7,584
Deferred:
U.S. federal	(22		)	1,054			(704		)
U.S. state and local	(12		)	51			(106		)
International	(146		)	(360		)	(216		)
Total deferred tax expense (benefit)	(180		)	745			(1,026		)
Total provision for income taxes	$	4,600		$	6,204		$	6,558

Schedule of income tax rate

A reconciliation of the significant differences between the U.S. statutory tax rate and the effective income tax rate on pretax income from continuing operations is as follows:



	Fiscal Years Ended January 31,
	2018		2017		2016
U.S. statutory tax rate	33.8	%	35.0	%	35.0	%
U.S. state income taxes, net of federal income tax benefit	1.8	%	1.7	%	1.8	%
Impact of the Tax Act:
One-time transition tax	12.3	%	—	%	—	%
Deferred tax effects	(14.1	)%	—	%	—	%
Income taxed outside the U.S.	(4.1	)%	(4.5	)%	(4.0	)%
Net impact of repatriated international earnings	(0.1	)%	(1.0	)%	0.1	%
Other, net	0.8	%	(0.9	)%	(2.6	)%
Effective income tax rate	30.4	%	30.3	%	30.3	%

Schedule of deferred tax balances

The significant components of the Company's deferred tax account balances are as follows:



	January 31,
(Amounts in millions)	2018			2017
Deferred tax assets:
Loss and tax credit carryforwards	$	1,989		$	3,633
Accrued liabilities	2,482			3,437
Share-based compensation	217			309
Other	1,251			1,474
Total deferred tax assets	5,939			8,853
Valuation allowances	(1,843		)	(1,494		)
Deferred tax assets, net of valuation allowance	4,096			7,359
Deferred tax liabilities:
Property and equipment	3,954			6,435
Inventories	1,153			1,808
Other	941			1,884
Total deferred tax liabilities	6,048			10,127
Net deferred tax liabilities	$	1,952		$	2,768

Schedule of deferred tax classification in the balance sheet

The deferred taxes noted above are classified as follows in the Company's Consolidated Balance Sheets:



	January 31,
(Amounts in millions)	2018		2017
Balance Sheet classification
Assets:
Other assets and deferred charges	$	1,879	$	1,565

Liabilities:
Deferred income taxes and other	3,831		4,333

Net deferred tax liabilities	$	1,952	$	2,768

Reconciliation of unrecognized tax benefits from continuing operations

A reconciliation of unrecognized tax benefits from continuing operations is as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018			2017			2016
Unrecognized tax benefits, beginning of year	$	1,050		$	607		$	838
Increases related to prior year tax positions	130			388			164
Decreases related to prior year tax positions	(254		)	(32		)	(446		)
Increases related to current year tax positions	122			145			119
Settlements during the period	(23		)	(46		)	(25		)
Lapse in statutes of limitations	(15		)	(12		)	(43		)
Unrecognized tax benefits, end of year	$	1,010		$	1,050		$	607

Contingencies (Tables)

12 Months Ended

Jan. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of foreign corrupt practices act expenses

For the fiscal years ended January 31, 2018, 2017 and 2016, the Company incurred the following third-party expenses in connection with the FCPA investigation and related matters:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Ongoing inquiries and investigations	$	26	$	80	$	95
Global compliance program and organizational enhancements	14		19		31
Total	$	40	$	99	$	126

Commitments (Tables)

12 Months Ended

Jan. 31, 2018

Commitments Disclosure [Abstract]

Aggregate minimum annual rentals under non-cancelable leases

Aggregate minimum annual rentals at January 31, 2018, under non-cancelable leases are as follows:



(Amounts in millions)
Fiscal Year	Operating Leases⁽¹⁾		Capital Lease and Financing Obligations
2019	$	1,933	$	1,039
2020	1,718		987
2021	1,532		942
2022	1,381		843
2023	1,158		696
Thereafter	7,644		5,423
Total minimum rentals	$	15,366	$	9,930
Less estimated executory costs			27
Net minimum lease payments			9,903
Noncash gain on future termination of financing obligation			1,111
Less imputed interest			(3,567		)
Present value of minimum lease payments			$	7,447


(1)	Represents minimum contractual obligation for non-cancelable leases with initial or remaining terms greater than 12 months as of January 31, 2018.

Retirement-Related Benefits (Tables)

12 Months Ended

Jan. 31, 2018

Retirement Benefits [Abstract]

Schedule of contribution expense related to defined contribution plans

The following table summarizes the contribution expense related to the Company's defined contribution plans for fiscal 2018, 2017 and 2016:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Defined contribution plans:
U.S.	$	1,124	$	1,064	$	967
International	126		173		179
Total contribution expense for defined contribution plans	$	1,250	$	1,237	$	1,146

Restructuring (Tables)

12 Months Ended

Jan. 31, 2018

Restructuring and Related Activities [Abstract]

Schedule of restructuring and related costs

As a result, the Company recorded $1.2 billion in pre-tax restructuring charges in fiscal 2018 as follows:



	Fiscal Year Ended January 31, 2018
(Amounts in millions)	Asset Impairment		Severance Costs		Total
Walmart International	$	193	$	43	$	236
Sam's Club	596		69		665
Corporate and support	—		300		300
Total	$	789	$	412	$	1,201

Segments (Tables)

12 Months Ended

Jan. 31, 2018

Segment Reporting Information, Profit (Loss) [Abstract]

Segment reporting information

Information for the Company's segments, as well as for Corporate and support, including the reconciliation to income before income taxes, is provided in the following table:



(Amounts in millions)	Walmart U.S.		Walmart International		Sam's Club		Corporate and support			Consolidated
Fiscal Year Ended January 31, 2018
Net sales	$	318,477	$	118,068	$	59,216	$	—		$	495,761
Operating income (loss)	17,869		5,352		982		(3,766		)	20,437
Interest, net										(2,178		)
Loss on extinguishment of debt										(3,136		)
Income before income taxes										$	15,123
Total assets	$	104,347	$	81,549	$	13,418	$	5,208		$	204,522
Depreciation and amortization	3,655		2,601		466		3,807			10,529
Capital expenditures	5,680		2,607		626		1,138			10,051

Fiscal Year Ended January 31, 2017
Net sales	$	307,833	$	116,119	$	57,365	$	—		$	481,317
Operating income (loss)	17,745		5,758		1,671		(2,410		)	22,764
Interest, net										(2,267		)
Income before income taxes										$	20,497
Total assets	$	104,262	$	74,508	$	14,125	$	5,930		$	198,825
Depreciation and amortization	3,298		2,629		487		3,666			10,080
Capital expenditures	6,090		2,697		639		1,193			10,619

Fiscal Year Ended January 31, 2016
Net sales	$	298,378	$	123,408	$	56,828	$	—		$	478,614
Operating income (loss)	19,087		5,346		1,820		(2,148		)	24,105
Interest, net										(2,467		)
Income before income taxes										$	21,638
Total assets	$	103,109	$	73,720	$	13,998	$	8,754		$	199,581
Depreciation and amortization	2,800		2,549		472		3,633			9,454
Capital expenditures	6,728		2,930		695		1,124			11,477

Segment revenues and long-lived assets

Total revenues, consisting of net sales and membership and other income, and long-lived assets, consisting primarily of property and equipment, net, aggregated by the Company's U.S. and non-U.S. operations for fiscal 2018, 2017 and 2016, are as follows:



	Fiscal Years Ended January 31,
(Amounts in millions)	2018		2017		2016
Revenues
U.S. operations	$	380,580	$	367,784	$	357,559
Non-U.S. operations	119,763		118,089		124,571
Total revenues	$	500,343	$	485,873	$	482,130

Long-lived assets
U.S. operations	$	81,478	$	82,746	$	82,475
Non-U.S. operations	33,340		31,432		34,041
Total long-lived assets	$	114,818	$	114,178	$	116,516

Significant Event (Tables)

12 Months Ended

Jan. 31, 2018

Subsequent Events [Abstract]

Schedule of dividends payable

For fiscal 2019, the annual dividend will be paid in four quarterly installments of $0.52 per share, according to the following record and payable dates:



Record Date		Payable Date
March 9, 2018		April 2, 2018
May 11, 2018		June 4, 2018
August 10, 2018		September 4, 2018
December 7, 2018		January 2, 2019

Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Jan. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial information



	Fiscal Year Ended January 31, 2018
(Amounts in millions, except per share data)	Q1		Q2		Q3		Q4		Total
Total revenues	$	117,542	$	123,355	$	123,179	$	136,267	$	500,343
Net sales	116,526		121,949		122,136		135,150		495,761
Cost of sales	87,688		91,521		91,547		102,640		373,396
Consolidated net income	3,152		3,104		1,904		2,363		10,523
Consolidated net income attributable to Walmart	3,039		2,899		1,749		2,175		9,862
Basic net income per common share attributable to Walmart	1.00		0.96		0.59		0.74		3.29
Diluted net income per common share attributable to Walmart⁽¹⁾	1.00		0.96		0.58		0.73		3.28

	Fiscal Year Ended January 31, 2017
	Q1		Q2		Q3		Q4		Total
Total revenues	$	115,904	$	120,854	$	118,179	$	130,936	$	485,873
Net sales	114,986		119,405		117,176		129,750		481,317
Cost of sales	86,544		89,485		87,484		97,743		361,256
Consolidated net income	3,216		3,889		3,202		3,986		14,293
Consolidated net income attributable to Walmart	3,079		3,773		3,034		3,757		13,643
Basic net income per common share attributable to Walmart	0.98		1.21		0.98		1.23		4.40
Diluted net income per common share attributable to Walmart⁽¹⁾	0.98		1.21		0.98		1.22		4.38


(1)	The sum of quarterly amounts may not agree to annual amount due to rounding and the impact of a decreasing amount of shares outstanding during the year.

Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($)	Jan. 31, 2016 USD ($)	Feb. 01, 2018 USD ($)	Jan. 31, 2015 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Customers per week, approximate	270,000,000
Number of stores	11,700
Banners	65
Number of countries	28
Amounts due from banks	$ 1,600	$ 1,500
Restricted cash and cash equivalents	300	265
Cash and cash equivalents	6,756	6,867	$ 8,705		$ 9,135
Cash held in foreign countries	6,800	5,900
Nonrepatriable cash and cash equivalents	1,400	1,000
Depreciation and amortization of property and equipment, property under financing obligations and property under capital leases	10,500	10,100	9,500
Advertising expense	3,100	2,900	2,500
Pre-opening costs	106	$ 131	$ 271
Other Noncurrent Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash recorded as noncurrent asset	$ 258
Subsequent Event [Member] \| Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment to retained earnings				$ 2,900

Summary of Significant Accounting Policies (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment	$ 185,154	$ 179,492
Accumulated depreciation	(77,479)	(71,782)
Property and equipment, net	107,675	107,710
Land
Property, Plant and Equipment [Line Items]
Property and equipment	25,298	24,801
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property and equipment	$ 101,155	98,547
Buildings and improvements \| Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Buildings and improvements \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	$ 52,695	48,998
Fixtures and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	1 year
Fixtures and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	30 years
Transportation equipment
Property, Plant and Equipment [Line Items]
Property and equipment	$ 2,387	2,845
Transportation equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Transportation equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	15 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment	$ 3,619	$ 4,301

Summary of Significant Accounting Policies (Schedule of Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Goodwill [Roll Forward]
Goodwill	$ 17,037	$ 16,695
Changes in currency translation and other	996	(1,433)
Acquisitions	209	1,775
Goodwill	18,242	17,037
Walmart U.S.
Goodwill [Roll Forward]
Goodwill	2,236	461
Changes in currency translation and other	0	0
Acquisitions	209	1,775
Goodwill	2,445	2,236
Walmart International
Goodwill [Roll Forward]
Goodwill	14,488	15,921
Changes in currency translation and other	996	(1,433)
Acquisitions	0	0
Goodwill	15,484	14,488
Sam's Club
Goodwill [Roll Forward]
Goodwill	313	313
Changes in currency translation and other	0	0
Acquisitions	0	0
Goodwill	$ 313	$ 313

Summary of Significant Accounting Policies (Schedule of Deferred Membership Fee) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Movement in Deferred Revenue [Roll Forward]
Deferred revenue	$ 743	$ 744	$ 759
Cash received from members	1,398	1,371	1,333
Membership fee revenue recognized	(1,411)	(1,372)	(1,348)
Deferred revenue	$ 730	$ 743	$ 744

Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Net Income Per Common Share [Line Items]
Consolidated net Income	$ 10,523	$ 14,293	$ 15,080
Consolidated net income attributable to noncontrolling interest	(661)	(650)	(386)
Consolidated net income attributable to Walmart	$ 9,862	$ 13,643	$ 14,694
Weighted-average common shares outstanding, basic	2,995	3,101	3,207
Dilutive impact of stock options and other share-based awards	15	11	10
Weighted-average common shares outstanding, diluted	3,010	3,112	3,217
Basic net income per common share attributable to Walmart	$ 3.29	$ 4.40	$ 4.58
Diluted net income per common share attributable to Walmart	$ 3.28	$ 4.38	$ 4.57

- Definition

The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

+ References + Details

- Definition

The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References + Details

Shareholders' Equity (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016	Oct. 09, 2017	Jun. 05, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 626	$ 596	$ 448
Income tax benefit recognized for share-based compensation	150	212	151
Number of shares registered under the Securities Act of 1933					210,000
Restricted stock and performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 234	$ 237	$ 134
Shares, granted	3,598
Restricted stock and performance share units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and performance share awards vesting percentages	0.00%
Restricted stock, performance share awards and stock option plans vesting periods, in years	1 year
Restricted stock and performance share units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock and performance share awards vesting percentages	150.00%
Restricted stock, performance share awards and stock option plans vesting periods, in years	3 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average discount for dividend yield	7.20%	8.30%	7.40%
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 368	$ 332	$ 292
Weighted average discount for dividend yield	9.00%	9.00%	8.70%
Restricted stock units vesting percentage, 3 years	50.00%
Restricted stock units vesting percentage, 5 years	50.00%
Shares, granted	8,570
Restricted stock units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock, performance share awards and stock option plans vesting periods, in years	3 years
Restricted stock units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock, performance share awards and stock option plans vesting periods, in years	5 years
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock, performance share awards and stock option plans vesting periods, in years	3 years
Two Thousand And Seventeen Share Repurchase Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share repurchase program, authorized amount				$ 20,000
Stock repurchase program, remaining authorized repurchase amount	$ 18,800

Shareholders' Equity (Schedule of Share-Based Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 626	$ 596	$ 448
Restricted stock and performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	234	237	134
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	368	332	292
Other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 24	$ 27	$ 22

Shareholders' Equity (Schedule of Activity) (Details) - $ / shares shares in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Restricted stock and performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, outstanding	8,558	9,077
Weighted-average grant-date fair value per share, outstanding	$ 70.47	$ 68.61
Shares, granted	3,598
Weighted-average grant-date fair value per share, granted	$ 74.73
Shares, vested/exercised	(2,525)
Weighted-average grant-date fair value per share, vested/exercised	$ 71.55
Shares, forfeited or expired	(1,592)
Weighted-average grant-date fair value per share, forfeited or expired	$ 68.59
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, outstanding	24,153	24,276
Weighted-average grant-date fair value per share, outstanding	$ 66.69	$ 65.52
Shares, granted	8,570
Weighted-average grant-date fair value per share, granted	$ 67.54
Shares, vested/exercised	(5,440)
Weighted-average grant-date fair value per share, vested/exercised	$ 63.02
Shares, forfeited or expired	(3,253)
Weighted-average grant-date fair value per share, forfeited or expired	$ 66.28

Shareholders' Equity (Schedule of Fair Value of Restricted Stock) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Restricted stock and performance share units
Additional information related to restricted stock and performance share awards and restricted stock units
Fair value	$ 181	$ 149	$ 142
Unrecognized compensation cost	$ 291	$ 211	$ 133
Weighted average remaining period to expense, years	1 year 2 months	1 year 3 months	1 year 3 months
Restricted stock units
Additional information related to restricted stock and performance share awards and restricted stock units
Fair value	$ 344	$ 261	$ 237
Unrecognized compensation cost	$ 972	$ 986	$ 628
Weighted average remaining period to expense, years	1 year 9 months	1 year 11 months	1 year 8 months

Shareholders' Equity (Schedule of Share Repurchases) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Share Repurchases [Abstract]
Total number of shares repurchased	104.9	119.9	62.4
Average price paid per share	$ 79.11	$ 69.18	$ 65.90
Total amount paid for share repurchases	$ 8,296	$ 8,298	$ 4,112

Accumulated Other Comprehensive Loss (Composition of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balances - beginning of period	$ (14,232)	$ (11,597)	$ (7,168)
Other comprehensive income (loss) before reclassifications	3,960	(2,670)	(4,434)
Amounts reclassified from accumulated other comprehensive income (loss)	91	35	5
Balances - end of period	(10,181)	(14,232)	(11,597)
Currency translation and other
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balances - beginning of period	(14,507)	(11,690)	(7,011)
Other comprehensive income (loss) before reclassifications	2,345	(2,817)	(4,679)
Amounts reclassified from accumulated other comprehensive income (loss)	26	0	0
Balances - end of period	(12,136)	(14,507)	(11,690)
Net investment hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balances - beginning of period	1,435	1,022	656
Other comprehensive income (loss) before reclassifications	(405)	413	366
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Balances - end of period	1,030	1,435	1,022
Unrealized gain on available-for-sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balances - beginning of period	145	0	0
Other comprehensive income (loss) before reclassifications	1,501	145	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Balances - end of period	1,646	145	0
Cash flow hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balances - beginning of period	(315)	(336)	(134)
Other comprehensive income (loss) before reclassifications	436	(22)	(217)
Amounts reclassified from accumulated other comprehensive income (loss)	1	43	15
Balances - end of period	122	(315)	(336)
Minimum pension liability
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balances - beginning of period	(990)	(593)	(679)
Other comprehensive income (loss) before reclassifications	83	(389)	96
Amounts reclassified from accumulated other comprehensive income (loss)	64	(8)	(10)
Balances - end of period	$ (843)	$ (990)	$ (593)

Accrued Liabilities (Schedule of Accrued Liabilities) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Accrued Liabilities [Abstract]
Accrued wages and benefits	$ 6,998	$ 6,105
Self-insurance	3,737	3,922
Accrued non-income taxes	3,073	2,816
Deferred gift card revenue	2,017	1,856
Other	6,297	5,955
Accrued liabilities	$ 22,122	$ 20,654

Short-term Borrowings and Long-term Debt (Details) $ in Millions	12 Months Ended
	Jan. 31, 2018 USD ($) Financial_institution	Jan. 31, 2017 USD ($) Financial_institution	Jan. 31, 2016 USD ($)
Debt Instrument [Line Items]
Short-term borrowings	$ 5,257	$ 1,099
Short-term debt, weighted average interest rate, at point in time	1.50%	6.20%
Number of financial institutions committing to lend funds under lines of credit \| Financial_institution	23	23
Available	$ 12,500	$ 12,500
Letters of credit outstanding, amount	2,600	3,600
Secured long-term debt, noncurrent	10	14
Carrying value of property collateralizing long term debt	101	82
Payment for debt extinguishment or debt prepayment cost	3,059	0	$ 0
Gain (loss) on extinguishment of debt	$ (3,136)	0	$ 0
Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	10.00%
Line of credit facility, commitment fee percentage	1.50%
Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	75.00%
Line of credit facility, commitment fee percentage	4.00%
Unused lines of Credit [Member]
Debt Instrument [Line Items]
Undrawn	$ 12,500	12,500
Put Option [Member]
Debt Instrument [Line Items]
Long-term debt, gross	500	$ 500
Walmart International
Debt Instrument [Line Items]
Available	4,000
Walmart International \| Unused lines of Credit [Member]
Debt Instrument [Line Items]
Undrawn	$ 0

Short-term Borrowings and Long-term Debt (Schedule of Lines of Credit) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Line of Credit Facility [Line Items]
Available	$ 12,500	$ 12,500
Five Year Facility [Member]
Line of Credit Facility [Line Items]
Available	5,000	5,000
Three Hundred And Sixty Four Day Facility [Member]
Line of Credit Facility [Line Items]
Available	7,500	7,500
Drawn amount
Line of Credit Facility [Line Items]
Drawn	0	0
Drawn amount \| Five Year Facility [Member]
Line of Credit Facility [Line Items]
Drawn	0	0
Drawn amount \| Three Hundred And Sixty Four Day Facility [Member]
Line of Credit Facility [Line Items]
Drawn	0	0
Unused lines of Credit [Member]
Line of Credit Facility [Line Items]
Undrawn	12,500	12,500
Unused lines of Credit [Member] \| Five Year Facility [Member]
Line of Credit Facility [Line Items]
Undrawn	5,000	5,000
Unused lines of Credit [Member] \| Three Hundred And Sixty Four Day Facility [Member]
Line of Credit Facility [Line Items]
Undrawn	$ 7,500	$ 7,500

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Short-term Borrowings and Long-term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 33,783	$ 38,271
Less amounts due within one year	(3,738)	(2,256)
Long-term debt	30,045	36,015
Fixed
Debt Instrument [Line Items]
Long-term debt	$ 24,540	$ 30,500
Debt weighted average interest rate fixed	3.90%	4.70%
Variable
Debt Instrument [Line Items]
Long-term debt	$ 800	$ 500
Debt weighted average interest rate variable	4.10%	5.50%
Total U.S. dollar denominated
Debt Instrument [Line Items]
Long-term debt	$ 25,340	$ 31,000
Fixed
Debt Instrument [Line Items]
Long-term debt	$ 3,101	$ 2,674
Debt weighted average interest rate fixed	3.30%	3.30%
Variable
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0
Total Euro denominated
Debt Instrument [Line Items]
Long-term debt	3,101	2,674
Fixed
Debt Instrument [Line Items]
Long-term debt	$ 3,801	$ 4,370
Debt weighted average interest rate fixed	5.40%	5.30%
Variable
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0
Total Sterling denominated
Debt Instrument [Line Items]
Long-term debt	3,801	4,370
Fixed
Debt Instrument [Line Items]
Long-term debt	$ 1,655	$ 88
Debt weighted average interest rate fixed	0.40%	1.60%
Variable
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 0
Total Yen denominated
Debt Instrument [Line Items]
Long-term debt	1,655	88
Unsecured debt
Debt Instrument [Line Items]
Long-term debt	33,897	38,132
Total other debt
Debt Instrument [Line Items]
Deferred loan costs, discounts, fair value hedges, foreign-held debt and secured debt	$ (114)	$ 139

Short-term Borrowings and Long-term Debt (Schedule of Debt Maturities) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Schedule of Short-Term Borrowings [Abstract]
2019	$ 3,733
2020	1,914
2021	3,336
2022	607
2023	2,934
Thereafter	21,259
Long-term debt	$ 33,783	$ 38,271

Short-term Borrowings and Long-term Debt (Schedule of Fiscal Year 2018 Debt Issuances) (Details) ¥ in Millions, $ in Millions			12 Months Ended
	Oct. 20, 2017 USD ($)	Jul. 18, 2017 USD ($)	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($)	Jan. 31, 2016 USD ($)	Jul. 18, 2017 JPY (¥)
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Proceeds from issuance of long-term debt			$ 7,476	$ 137	$ 39
0.183% Debt Issuance, Due 2022 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount \| ¥						¥ 70,000
Interest rate						0.183%
Proceeds from issuance of long-term debt		$ 619
0.298% Debt Issuance, Due 2024 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount \| ¥						¥ 40,000
Interest rate						0.298%
Proceeds from issuance of long-term debt		354
0.520% Debt Issuance, Due 2027 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount \| ¥						¥ 60,000
Interest rate						0.52%
Proceeds from issuance of long-term debt		$ 530
Variable Rate Debt, Due 2019 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount	$ 300
Proceeds from issuance of long-term debt	299
1.75% Debt Issuance, Due 2019 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount	$ 1,200
Interest rate	1.75%
Proceeds from issuance of long-term debt	$ 1,198
1.900% Debt Issuance, Due 2020 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount	$ 1,250
Interest rate	1.90%
Proceeds from issuance of long-term debt	$ 1,245
2.350% Debt Issuance, Due 2022 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount	$ 1,250
Interest rate	2.35%
Proceeds from issuance of long-term debt	$ 1,245
2.650% Debt Issuance, Due 2024 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount	$ 1,000
Interest rate	2.65%
Proceeds from issuance of long-term debt	$ 996
3.625% Debt Issuance, Due 2047 [Domain] \| Unsecured debt
Schedule of Fiscal Year 2018 Debt Issuances [Line Items]
Principal amount	$ 1,000
Interest rate	3.625%
Proceeds from issuance of long-term debt	$ 990

Short-term Borrowings and Long-term Debt (Schedule of Fiscal Year 2018 and 2017 Debt Maturities) (Details) £ in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($)	Jan. 31, 2016 USD ($)	Jan. 25, 2018 USD ($)	Jan. 25, 2018 GBP (£)	Nov. 06, 2017 USD ($)	Apr. 21, 2017 USD ($)	Apr. 05, 2017 USD ($)	Apr. 15, 2016 USD ($)	Apr. 11, 2016 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt	$ 13,061	$ 2,055	$ 4,432
Unsecured debt
Debt Instrument [Line Items]
Repayments of long-term debt	12,772	2,000
Repayments of long-term debt, matured	1,500
Repayment of long-term debt, partial extinguishment	11,272
Unsecured debt \| 5.375% Fixed Rate Debt, Due 2017 [Member]
Debt Instrument [Line Items]
Principal amount								$ 1,000
Interest rate								5.375%
Repayments of long-term debt	1,000
Unsecured debt \| 1.000% Fixed Rate Debt, Due 2017 [Member]
Debt Instrument [Line Items]
Principal amount							$ 500
Interest rate							1.00%
Repayments of long-term debt	500
Unsecured debt \| 1.950% Fixed Rate Debt, Due 2018 [Member]
Debt Instrument [Line Items]
Principal amount				$ 1,000
Interest rate				1.95%	1.95%
Repayments of long-term debt	276
Unsecured debt \| 4.125% Fixed Rate Debt, Due 2019 [Member]
Debt Instrument [Line Items]
Principal amount						$ 500
Interest rate						4.125%
Repayments of long-term debt	136
Unsecured debt \| 3.625% Fixed Rate Debt, Due 2020 [Member]
Debt Instrument [Line Items]
Principal amount						$ 1,500
Interest rate						3.625%
Repayments of long-term debt	661
Unsecured debt \| 3.250% Fixed Rate Debt, Due 2020 [Member]
Debt Instrument [Line Items]
Principal amount				$ 1,750
Interest rate				3.25%	3.25%
Repayments of long-term debt	553
Unsecured debt \| 4.250% Fixed Rate Debt, Due 2021 [Member]
Debt Instrument [Line Items]
Principal amount				$ 1,000
Interest rate				4.25%	4.25%
Repayments of long-term debt	491
Unsecured debt \| 6.750% Fixed Rate Date, Due 2023 [Member]
Debt Instrument [Line Items]
Principal amount				$ 250
Interest rate				6.75%	6.75%
Repayments of long-term debt	98
Unsecured debt \| 5.875% Fixed Rate Debt, Due 2027 [Member]
Debt Instrument [Line Items]
Principal amount				$ 750
Interest rate				5.875%	5.875%
Repayments of long-term debt	267
Unsecured debt \| 7.550% Fixed Rate Debt, Due 2030 [Member]
Debt Instrument [Line Items]
Principal amount				$ 500
Interest rate				7.55%	7.55%
Repayments of long-term debt	412
Unsecured debt \| 5.250% Fixed Rate Debt, Due 2035 [Member]
Debt Instrument [Line Items]
Principal amount				$ 2,500	£ 1,000
Interest rate				5.25%	5.25%
Repayments of long-term debt	532
Unsecured debt \| 5.250% Fixed Rate Debt (GBP), Due 2035 [Member]
Debt Instrument [Line Items]
Repayments of long-term debt	260
Unsecured debt \| 6.500% Fixed Rate Debt, Due 2037 [Member]
Debt Instrument [Line Items]
Principal amount				$ 3,000
Interest rate				6.50%	6.50%
Repayments of long-term debt	1,700
Unsecured debt \| 6.200% Fixed Rate Debt, Due 2038 [Member]
Debt Instrument [Line Items]
Principal amount				$ 2,000
Interest rate				6.20%	6.20%
Repayments of long-term debt	1,081
Unsecured debt \| 4.875% Fixed Rate Debt, Due 2039 [Member]
Debt Instrument [Line Items]
Principal amount \| £					£ 1,000
Interest rate				4.875%	4.875%
Repayments of long-term debt	851
Unsecured debt \| 5.625% Fixed Rate Debt, Due 2040 [Member]
Debt Instrument [Line Items]
Principal amount				$ 1,250
Interest rate				5.625%	5.625%
Repayments of long-term debt	499
Unsecured debt \| 4.875% Fixed Rate Debt, Due 2040 [Member]
Debt Instrument [Line Items]
Principal amount				$ 750
Interest rate				4.875%	4.875%
Repayments of long-term debt	372
Unsecured debt \| 5.000% Fixed Rate Debt, Due 2040 [Member]
Debt Instrument [Line Items]
Principal amount				$ 1,250
Interest rate				5.00%	5.00%
Repayments of long-term debt	731
Unsecured debt \| 5.625% Fixed Rate Debt, Due 2041 [Member]
Debt Instrument [Line Items]
Principal amount				$ 2,000
Interest rate				5.625%	5.625%
Repayments of long-term debt	1,082
Unsecured debt \| 4.000% Fixed Rate Debt, Due 2043 [Member]
Debt Instrument [Line Items]
Principal amount						$ 1,000
Interest rate						4.00%
Repayments of long-term debt	291
Unsecured debt \| 4.750% Fixed Rate Debt, Due 2043 [Member]
Debt Instrument [Line Items]
Principal amount				$ 750
Interest rate				4.75%	4.75%
Repayments of long-term debt	481
Unsecured debt \| 4.300% Fixed Rate Debt, Due 2044 [Member]
Debt Instrument [Line Items]
Principal amount				$ 1,000
Interest rate				4.30%	4.30%
Repayments of long-term debt	$ 498
Unsecured debt \| 0.600% Fixed Rate Debt, Due 2016 [Member]
Debt Instrument [Line Items]
Principal amount										$ 1,000
Interest rate										0.60%
Repayments of long-term debt		1,000
Unsecured debt \| 2.800% Fixed Rate Debt, Due 2016 [Member]
Debt Instrument [Line Items]
Principal amount									$ 1,000
Interest rate									2.80%
Repayments of long-term debt		$ 1,000

Fair Value Measurements (Details) $ in Billions	12 Months Ended
Fair Value Measurements (Details) $ in Billions	Jan. 31, 2018 USD ($)
Fair Value Disclosures [Abstract]
Asset impairment charges	$ 1.4

Fair Value Measurements (Notional Amounts And Fair Values Of Interest Rate Swaps) (Details) - Recurring - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	$ 10,773	$ 11,207
Fair value, inputs, level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	322	(151)
Fair value hedging \| Floating-rate interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	4,000	5,000
Fair value hedging \| Floating-rate interest rate swaps \| Fair value, inputs, level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	(91)	(4)
Net investment hedging \| Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	2,250	2,250
Net investment hedging \| Cross-currency interest rate swaps \| Fair value, inputs, level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	208	471
Cash flow hedging \| Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	4,523	3,957
Cash flow hedging \| Cross-currency interest rate swaps \| Fair value, inputs, level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 205	$ (618)

Fair Value Measurements (Cost Basis And Fair Value Of Available-For-Sale Securities) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, cost basis	$ 1,901	$ 1,901
Carrying Value [Member] \| Fair Value, Inputs, Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, fair value	$ 3,547	$ 2,046

Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 33,783	$ 38,271
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	33,783	38,271
Fair Value [Member] \| Fair value, inputs, level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including amounts due within one year, Fair Value	$ 38,766	$ 44,602

Derivative Financial Instruments (Details) $ in Millions, ¥ in Billions, £ in Billions	12 Months Ended
	Jan. 31, 2018 JPY (¥)	Jan. 31, 2018 GBP (£)	Jan. 31, 2017 JPY (¥)	Jan. 31, 2017 GBP (£)	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($)
Derivative [Line Items]
Cash collateral held from counterparties					$ 279	$ 242
Threshold of derivative liability position requiring cash collateral					150
Cash collateral posted with counterparties					$ 0	$ 0
Designated as hedging instrument \| Net investment hedging \| United Kingdom
Derivative [Line Items]
Notional amount of nonderivative instruments \| £		£ 1.7		£ 2.5
Designated as hedging instrument \| Net investment hedging \| Japan
Derivative [Line Items]
Notional amount of nonderivative instruments \| ¥	¥ 180.0		¥ 10.0

Derivative Financial Instruments (Balance Sheet Classification Of Financial Instruments) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Fair value hedging \| Other assets and deferred charges
Derivative [Line Items]
Derivative assets	$ 0	$ 8
Fair value hedging \| Deferred income taxes and other
Derivative [Line Items]
Derivative liabilities	91	12
Net investment hedging \| Other assets and deferred charges
Derivative [Line Items]
Derivative assets	208	471
Net investment hedging \| Long-term debt
Derivative [Line Items]
Nonderivative hedging instruments	4,041	3,209
Cash flow hedging \| Other assets and deferred charges
Derivative [Line Items]
Derivative assets	300	0
Cash flow hedging \| Deferred income taxes and other
Derivative [Line Items]
Derivative liabilities	$ 95	$ 618

Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Taxes (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Taxes [Line Items]
Federal statutory income tax rate, pre-Tax Cuts and Jobs Act	35.00%
Federal statutory income tax rate, post-Tax Cuts and Jobs Act	21.00%
U.S. statutory tax rate	33.80%	35.00%	35.00%
Net tax benefit recognized	$ 200
Transition tax on accumulated foreign earnings, for cash and other net current assets	15.50%
Transition tax on accumulated foreign earnings, remaining earnings	8.00%
Provisional transition tax for accumulated foreign earnings	$ 1,900
Provisional deferred tax benefit from change in tax rate	2,100
Amount tax basis exceeds outside book basis of foreign subsidiaries	10,000
Operating loss and capital loss carryforwards expiring by 2038	3,600
Valuation allowances	(1,843)	$ (1,494)
Unrecognized tax benefits	1,010	1,050	$ 607	$ 838
Unrecognized tax benefits that would impact effective tax rate	690	703
Interest and penalty expense (benefit) related to uncertain tax positions	32	35	$ 5
Unrecognized tax benefits, interest on income taxes accrued	96	72
Unrecognized tax benefits, income tax penalties accrued	12	$ 0
Minimum
Taxes [Line Items]
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit	50
Maximum
Taxes [Line Items]
Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit	400
Operating and capital loss carryforward [Member]
Taxes [Line Items]
Operating loss and capital loss carryforwards	$ 6,700

Taxes (Schedule of Income Before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Taxes [Line Items]
Income before income taxes, U.S.	$ 10,722	$ 15,680	$ 16,685
Income before income taxes, non-U.S.	4,401	4,817	4,953
Income before income taxes	$ 15,123	$ 20,497	$ 21,638

Taxes (Schedule of Income Tax Provision) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Taxes [Abstract]
U.S. federal	$ 2,998	$ 3,454	$ 5,562
U.S. state and local	405	495	622
International	1,377	1,510	1,400
Total current tax provision	4,780	5,459	7,584
U.S. federal	(22)	1,054	(704)
U.S. state and local	(12)	51	(106)
International	(146)	(360)	(216)
Total deferred tax expense (benefit)	(180)	745	(1,026)
Total provision for income taxes	$ 4,600	$ 6,204	$ 6,558

Taxes (Schedule of Income Tax Rate) (Details)	12 Months Ended
Taxes (Schedule of Income Tax Rate) (Details)	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Taxes [Abstract]
U.S. statutory tax rate	33.80%	35.00%	35.00%
U.S. state income taxes, net of federal income tax benefit	1.80%	1.70%	1.80%
Transition tax on accumulated foreign earnings	12.30%	0.00%	0.00%
Deferred tax benefit from change in tax rate	(14.10%)	0.00%	0.00%
Income taxed outside the U.S.	(4.10%)	(4.50%)	(4.00%)
Net impact of repatriated international earnings	(0.10%)	(1.00%)	0.10%
Other, net	0.80%	(0.90%)	(2.60%)
Effective income tax rate	30.40%	30.30%	30.30%

Taxes (Schedule of Deferred Tax Balances) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Income Tax Disclosure [Abstract]
Loss and tax credit carryforwards	$ 1,989	$ 3,633
Accrued liabilities	2,482	3,437
Share-based compensation	217	309
Other	1,251	1,474
Total deferred tax assets	5,939	8,853
Valuation allowances	(1,843)	(1,494)
Deferred tax assets, net of valuation allowance	4,096	7,359
Property and equipment	3,954	6,435
Inventories	1,153	1,808
Other	941	1,884
Total deferred tax liabilities	6,048	10,127
Net deferred tax liabilities	$ 1,952	$ 2,768

Taxes (Schedule of Deferred Tax Classification in the Balance Sheet) (Details) - USD ($) $ in Millions	Jan. 31, 2018	Jan. 31, 2017
Liabilities [Abstract]
Net deferred tax liabilities	$ 1,952	$ 2,768
Other assets and deferred charges
Assets
Other assets and deferred charges	1,879	1,565
Deferred income taxes and other
Liabilities [Abstract]
Deferred income taxes and other	$ 3,831	$ 4,333

Taxes (Reconciliation of Unrecognized Tax Benefits from Continuing Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Reconciliation of Unrecognized Tax Benefits
Unrecognized tax benefits, beginning of year	$ 1,050	$ 607	$ 838
Increases related to prior year tax positions	130	388	164
Decreases related to prior year tax positions	(254)	(32)	(446)
Increases related to current year tax positions	122	145	119
Settlements during the period	(23)	(46)	(25)
Lapse in statutes of limitations	(15)	(12)	(43)
Unrecognized tax benefits, end of year	$ 1,010	$ 1,050	$ 607

Contingencies (Details) $ in Millions	12 Months Ended
Contingencies (Details) $ in Millions	Jan. 31, 2018 USD ($)
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss	$ 283
Asda equal value lawsuit
Loss Contingencies [Line Items]
Loss contingency, claims filed, number	10,000

Contingencies (Schedule of Foreign Corrupt Practices Act Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Foreign Corrupt Practices Act Expenses [Line Items]
Foreign corrupt practices act related expenses	$ 99	$ 40	$ 126
Compliance programs and organizational enhancements
Foreign Corrupt Practices Act Expenses [Line Items]
Foreign corrupt practices act related expenses	19	14	31
Inquiry and investigation expense
Foreign Corrupt Practices Act Expenses [Line Items]
Foreign corrupt practices act related expenses	$ 80	$ 26	$ 95

Commitments (Details) - USD ($) $ in Billions	12 Months Ended
Commitments (Details) - USD ($) $ in Billions	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Commitments Disclosure [Abstract]
Operating leases, rent expense	$ 2.9	$ 2.6	$ 2.5

Commitments (Aggregate Minimum Annual Rentals Under Non-Cancelable Leases) (Details) $ in Millions	Jan. 31, 2018 USD ($)
Commitments Disclosure [Abstract]
Operating leases, future minimum payments due, next twelve months	$ 1,933
Capital leases, future minimum payments due, next twelve months	1,039
Operating leases, future minimum payments, due in two years	1,718
Capital leases, future minimum payments due in two years	987
Operating leases, future minimum payments, due in three years	1,532
Capital leases, future minimum payments due in three years	942
Operating leases, future minimum payments, due in four years	1,381
Capital leases, future minimum payments due in four years	843
Operating leases, future minimum payments, due in five years	1,158
Capital leases, future minimum payments due in five years	696
Operating leases, future minimum payments, due thereafter	7,644
Capital leases, future minimum payments due thereafter	5,423
Operating leases, future minimum payments due	15,366
Capital leases, future minimum payments due	9,930
Capital leases, future minimum payments, executory costs	27
Capital leases, future minimum payments, present value of net minimum payments	9,903
Noncash gain on future termination of financing obligation	1,111
Capital leases, future minimum payments, interest included in payments	(3,567)
Present value of minimum lease payments	$ 7,447

Retirement-Related Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Contribution expense from retirement plans [Line Items]
Defined contribution plan, employer matching contribution, percent of match	100.00%
Defined contribution plan, employer matching contribution, percent of employees' gross pay	6.00%
Vesting percentage of matching contribution to eligible associates	100.00%
Defined contribution plan, maximum annual contributions per employee, percent	50.00%
United Kingdom \| Deferred income taxes and other
Contribution expense from retirement plans [Line Items]
Assets for plan benefits, defined benefit plan	$ 97
Liability, defined benefit plan, noncurrent		$ 129
Japan \| Deferred income taxes and other
Contribution expense from retirement plans [Line Items]
Liability, defined benefit plan, noncurrent	$ 184	$ 203

Retirement-Related Benefits (Schedule of Contribution Expense Related to Defined Contribution Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Contribution expense from retirement plans [Line Items]
Total contribution expense for defined contribution and benefit plans	$ 1,250	$ 1,237	$ 1,146
Domestic Plan [Member]
Contribution expense from retirement plans [Line Items]
Defined contribution plan, cost	1,124	1,064	967
Foreign Plan [Member]
Contribution expense from retirement plans [Line Items]
Defined contribution plan, cost	$ 126	$ 173	$ 179

Acquisitions, Disposals, and Related Items (Details) - USD ($) $ in Millions					12 Months Ended
	Apr. 04, 2017	Sep. 09, 2016	Jun. 01, 2016	Jul. 01, 2015	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016	Sep. 19, 2016
Significant Acquisitions and Disposals [Line Items]
Investment and business acquisitions, net of cash acquired					$ 375	$ 2,463	$ 0
Goodwill					18,242	17,037	16,695
Proceeds from the disposal of certain operations					1,046	662	246
Purchase of available for sale securities					0	$ 1,901	$ 0
Yihaodian
Significant Acquisitions and Disposals [Line Items]
Purchase of interests of noncontrolling interest				$ 760
JD.com [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase of available for sale securities					$ 1,900
Noncash or part noncash acquisition, interest acquired					5.00%
Aggregate ownership, percent					10.00%
Suburbia [Member]
Significant Acquisitions and Disposals [Line Items]
Proceeds from the disposal of certain operations	$ 1,000
Gain (loss) on disposition of business, including deferred portion	700
Net gain on disposition of business	$ 400
Gain deferral period					20 years
Yihaodian
Significant Acquisitions and Disposals [Line Items]
Noncash or part noncash divestiture, type of consideration received			Class A ordinary shares
Available for sale securities, percent					5.00%
Noncash or part noncash divestiture, amount of consideration received			$ 1,500
Gain (loss) on disposition of assets			$ 535
Jet.com [Member]
Significant Acquisitions and Disposals [Line Items]
Investment and business acquisitions, net of cash acquired		$ 2,400
Goodwill								$ 1,700
Business combination, recognized identifiable assets acquired and liabilities assumed, intangible assets, other than goodwill								600
Additional compensation over five year period								$ 800

Restructuring (Details) $ in Millions	12 Months Ended
Restructuring (Details) $ in Millions	Jan. 31, 2018 USD ($)
Restructuring and Related Activities [Abstract]
Restructuring charges	$ 1,201

Restructuring (Schedule of Restructuring and Related Costs) (Details) $ in Millions	12 Months Ended
	Jan. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	$ 1,400
Restructuring charges	1,201
Walmart International
Restructuring Cost and Reserve [Line Items]
Restructuring charges	236
Sam's Club
Restructuring Cost and Reserve [Line Items]
Restructuring charges	665
Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	300
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	789
Facility Closing [Member] \| Walmart International
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	193
Facility Closing [Member] \| Sam's Club
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	596
Facility Closing [Member] \| Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	412
Employee Severance [Member] \| Walmart International
Restructuring Cost and Reserve [Line Items]
Severance costs	43
Employee Severance [Member] \| Sam's Club
Restructuring Cost and Reserve [Line Items]
Severance costs	69
Employee Severance [Member] \| Corporate and Other [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 300

Segments (Segment Reporting Information) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 135,150	$ 122,136	$ 121,949	$ 116,526	$ 129,750	$ 117,176	$ 119,405	$ 114,986	$ 495,761	$ 481,317	$ 478,614
Operating income (loss)									20,437	22,764	24,105
Interest, net									(2,178)	(2,267)	(2,467)
Gain (loss) on extinguishment of debt									(3,136)	0	0
Income before income taxes									15,123	20,497	21,638
Total assets	204,522				198,825				204,522	198,825	199,581
Depreciation and amortization									10,529	10,080	9,454
Capital expenditures									10,051	10,619	11,477
Walmart U.S.
Segment Reporting Information [Line Items]
Net sales									318,477	307,833	298,378
Operating income (loss)									17,869	17,745	19,087
Total assets	104,347				104,262				104,347	104,262	103,109
Depreciation and amortization									3,655	3,298	2,800
Capital expenditures									5,680	6,090	6,728
Walmart International
Segment Reporting Information [Line Items]
Net sales									118,068	116,119	123,408
Operating income (loss)									5,352	5,758	5,346
Total assets	81,549				74,508				81,549	74,508	73,720
Depreciation and amortization									2,601	2,629	2,549
Capital expenditures									2,607	2,697	2,930
Sam's Club
Segment Reporting Information [Line Items]
Net sales									59,216	57,365	56,828
Operating income (loss)									982	1,671	1,820
Total assets	13,418				14,125				13,418	14,125	13,998
Depreciation and amortization									466	487	472
Capital expenditures									626	639	695
Corporate and support
Segment Reporting Information [Line Items]
Net sales									0	0	0
Operating income (loss)									(3,766)	(2,410)	(2,148)
Total assets	$ 5,208				$ 5,930				5,208	5,930	8,754
Depreciation and amortization									3,807	3,666	3,633
Capital expenditures									$ 1,138	$ 1,193	$ 1,124

Segments (Segment Revenues and Long-Lived Assets) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Segment Reporting Information [Line Items]
Total revenues	$ 136,267	$ 123,179	$ 123,355	$ 117,542	$ 130,936	$ 118,179	$ 120,854	$ 115,904	$ 500,343	$ 485,873	$ 482,130
Long-lived assets	114,818				114,178				114,818	114,178	116,516
United States
Segment Reporting Information [Line Items]
Total revenues									380,580	367,784	357,559
Long-lived assets	81,478				82,746				81,478	82,746	82,475
Walmart International
Segment Reporting Information [Line Items]
Total revenues									119,763	118,089	124,571
Long-lived assets	$ 33,340				$ 31,432				$ 33,340	$ 31,432	$ 34,041

Significant Event (Details) - $ / shares		12 Months Ended
Significant Event (Details) - $ / shares	Feb. 20, 2018	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Subsequent Event [Line Items]
Dividends declared per common share		$ 2.04	$ 2.00	$ 1.96
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends declared per common share	$ 2.08
Common stock, quarterly dividends, per share, declared	$ 0.52

Quarterly Financial Data (unaudited) (Schedule of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 136,267	$ 123,179	$ 123,355	$ 117,542	$ 130,936	$ 118,179	$ 120,854	$ 115,904	$ 500,343	$ 485,873	$ 482,130
Net sales	135,150	122,136	121,949	116,526	129,750	117,176	119,405	114,986	495,761	481,317	478,614
Cost of sales	102,640	91,547	91,521	87,688	97,743	87,484	89,485	86,544	373,396	361,256	360,984
Consolidated net income	2,363	1,904	3,104	3,152	3,986	3,202	3,889	3,216	10,523	14,293	15,080
Consolidated net income attributable to Walmart	$ 2,175	$ 1,749	$ 2,899	$ 3,039	$ 3,757	$ 3,034	$ 3,773	$ 3,079	$ 9,862	$ 13,643	$ 14,694
Basic net income per common share attributable to Walmart	$ 0.74	$ 0.59	$ 0.96	$ 1.00	$ 1.23	$ 0.98	$ 1.21	$ 0.98	$ 3.29	$ 4.40	$ 4.58
Diluted net income per common share attributable to Walmart	$ 0.73	$ 0.58	$ 0.96	$ 1.00	$ 1.22	$ 0.98	$ 1.21	$ 0.98	$ 3.28	$ 4.38	$ 4.57