Walmart (WMT) 10-Q 4 Dec 19 2020 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Oct. 31, 2019	Dec. 02, 2019
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Oct. 31, 2019
Document Transition Report	false
Entity File Number	001-6991
Entity Registrant Name	WALMART INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	71-0415188
Entity Address, Address Line One	702 S.W. 8th Street
Entity Address, City or Town	Bentonville
Entity Address, State or Province	AR
Entity Address, Postal Zip Code	72716
City Area Code	479
Local Phone Number	273-4000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		2,837,174,936
Entity Central Index Key	0000104169
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock, par value $0.10 per share
Title of 12(b) Security	Common Stock, par value $0.10 per share
Trading Symbol	WMT
Security Exchange Name	NYSE
1.900% Notes Due 2022
Title of 12(b) Security	1.900% Notes Due 2022
Security Exchange Name	NYSE
No Trading Symbol Flag	true
2.550% Notes Due 2026
Title of 12(b) Security	2.550% Notes Due 2026
Security Exchange Name	NYSE
No Trading Symbol Flag	true

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenues:
Net sales	$ 126,981	$ 123,897	$ 379,318	$ 372,586
Membership and other income	1,010	997	2,975	3,026
Total revenues	127,991	124,894	382,293	375,612
Costs and expenses:
Cost of sales	95,900	93,116	286,857	280,394
Operating, selling, general and administrative expenses	27,373	26,792	80,190	79,328
Operating income	4,718	4,986	15,246	15,890
Interest:
Debt	547	501	1,693	1,398
Finance, capital lease and financing obligations	86	92	254	279
Interest income	(44)	(59)	(148)	(153)
Interest, net	589	534	1,799	1,524
Other (gains) and losses	(244)	1,876	(996)	8,570
Income before income taxes	4,373	2,576	14,443	5,796
Provision for income taxes	1,052	759	3,536	2,430
Consolidated net income	3,321	1,817	10,907	3,366
Consolidated net income attributable to noncontrolling interest	(33)	(107)	(167)	(383)
Consolidated net income attributable to Walmart	$ 3,288	$ 1,710	$ 10,740	$ 2,983
Basic net income (loss) per common share:
Basic net income (loss) per common share attributable to Walmart (in dollars per share)	$ 1.16	$ 0.58	$ 3.76	$ 1.01
Diluted net income (loss) per common share:
Diluted net income (loss) per common share attributable to Walmart (in dollars per share)	$ 1.15	$ 0.58	$ 3.74	$ 1.01
Weighted-average common shares outstanding:
Basic (shares)	2,843	2,924	2,855	2,940
Diluted (shares)	2,861	2,941	2,872	2,956
Dividends declared per common share (in dollars per share)	$ 0	$ 0	$ 2.12	$ 2.08

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 3,321	$ 1,817	$ 10,907	$ 3,366
Consolidated net income attributable to noncontrolling interest	(33)	(107)	(167)	(383)
Consolidated net income attributable to Walmart	3,288	1,710	10,740	2,983
Other comprehensive income (loss), net of income taxes
Currency translation and other	(1,188)	1,020	(762)	(200)
Net investment hedges	(113)	114	135	375
Cash flow hedges	(12)	(109)	(301)	(341)
Minimum pension liability	8	12	13	64
Other comprehensive income (loss), net of income taxes	(1,305)	1,037	(915)	(102)
Other comprehensive (income) loss attributable to noncontrolling interest	193	123	75	250
Other comprehensive income (loss) attributable to Walmart	(1,112)	1,160	(840)	148
Comprehensive income, net of income taxes	2,016	2,854	9,992	3,264
Comprehensive (income) loss attributable to noncontrolling interest	160	16	(92)	(133)
Comprehensive income attributable to Walmart	$ 2,176	$ 2,870	$ 9,900	$ 3,131

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019	Oct. 31, 2018
Current assets:
Cash and cash equivalents	$ 8,606	$ 7,722	$ 9,174
Receivables, net	5,612	6,283	5,785
Inventories	51,546	44,269	50,380
Prepaid expenses and other	2,148	3,623	4,107
Total current assets	67,912	61,897	69,446
Property and equipment, net	104,326	104,317	104,358
Operating lease right-of-use assets, net	16,944	0	0
Finance lease right-of-use assets, net	4,155	0	0
Property under capital lease and financing obligations, net	0	7,078	6,991
Goodwill	30,716	31,181	31,044
Other long-term assets	15,777	14,822	14,744
Total assets	239,830	219,295	226,583
Current liabilities:
Short-term borrowings	4,926	5,225	7,795
Accounts payable	49,750	47,060	49,729
Dividends payable	1,507	0	1,516
Accrued liabilities	20,973	22,159	22,795
Accrued income taxes	327	428	616
Long-term debt due within one year	4,093	1,876	2,591
Operating lease obligations due within one year	1,740	0	0
Finance lease obligations due within one year	468	0	0
Capital lease and financing obligations due within one year	0	729	709
Total current liabilities	83,784	77,477	85,751
Long-term debt	44,912	43,520	43,275
Long-term operating lease obligations	15,741	0	0
Long-term finance lease obligations	4,068	0	0
Long-term capital lease and financing obligations	0	6,683	6,621
Deferred income taxes and other	13,018	11,981	11,467
Commitments and contingencies
Equity:
Common stock	284	288	291
Capital in excess of par value	3,091	2,965	2,887
Retained earnings	80,656	80,785	80,287
Accumulated other comprehensive loss	(12,382)	(11,542)	(11,469)
Total Walmart shareholders' equity	71,649	72,496	71,996
Noncontrolling interest	6,658	7,138	7,473
Total equity	78,307	79,634	79,469
Total liabilities and equity	$ 239,830	$ 219,295	$ 226,583

Condensed Consolidated Statem_3

Condensed Consolidated Statement Of Shareholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Capital in excess of par value	Retained earnings	Accumulated other comprehensive loss	Total Walmart shareholders' equity	Noncontrolling interest
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	924			2,361	(1,436)	925	(1)
Consolidated net income	2,276			2,134		2,134	142
Other comprehensive income (loss), net of income taxes	1,499				1,336	1,336	163
Dividends	(6,135)			(6,135)		(6,135)
Purchase of Company stock (in shares)		(5)
Purchase of Company stock	(508)	$ (1)	(15)	(492)		(508)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(489)						(489)
Other, in shares		4
Other	(65)		(76)	7		(69)	4
Balances, in shares at Apr. 30, 2018		2,951
Balances at Apr. 30, 2018	78,324	$ 294	2,557	82,982	(10,281)	75,552	2,772
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	3,366
Other comprehensive income (loss), net of income taxes	(102)
Balances, in shares at Oct. 31, 2018		2,912
Balances at Oct. 31, 2018	79,469	$ 291	2,887	80,287	(11,469)	71,996	7,473
Balances, in shares at Apr. 30, 2018		2,951
Balances at Apr. 30, 2018	78,324	$ 294	2,557	82,982	(10,281)	75,552	2,772
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	(727)			(861)		(861)	134
Other comprehensive income (loss), net of income taxes	(2,638)				(2,348)	(2,348)	(290)
Dividends	14			14		14
Purchase of Company stock (in shares)		(16)
Purchase of Company stock	(1,366)	$ (1)	(41)	(1,324)		(1,366)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	9						9
Other	196	$ 1	194	(1)		194	2
Balances, in shares at Jul. 31, 2018		2,935
Balances at Jul. 31, 2018	73,812	$ 294	2,710	80,810	(12,629)	71,185	2,627
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	1,817			1,710		1,710	107
Other comprehensive income (loss), net of income taxes	1,037				1,160	1,160	(123)
Dividends	14			14		14
Purchase of Company stock (in shares)		(25)
Purchase of Company stock	(2,320)	$ (3)	(75)	(2,242)		(2,320)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(3)						(3)
Noncontrolling Interest, Increase from Business Combination	4,852						4,852
Other, in shares		2
Other	260		252	(5)		247	13
Balances, in shares at Oct. 31, 2018		2,912
Balances at Oct. 31, 2018	79,469	$ 291	2,887	80,287	(11,469)	71,996	7,473
Balances, in shares at Jan. 31, 2019		2,878
Balances at Jan. 31, 2019	79,634	$ 288	2,965	80,785	(11,542)	72,496	7,138
Increase (Decrease) in Stockholders' Equity [Roll Forward]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(300)			(266)		(266)	(34)
Consolidated net income	3,906			3,842		3,842	64
Other comprehensive income (loss), net of income taxes	485				451	451	34
Dividends	(6,071)			(6,071)		(6,071)
Purchase of Company stock (in shares)		(21)
Purchase of Company stock	(2,087)	$ (2)	(73)	(2,012)		(2,087)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(481)						(481)
Other, in shares		5
Other	(176)		(158)	(2)		(160)	(16)
Balances, in shares at Apr. 30, 2019		2,862
Balances at Apr. 30, 2019	74,910	$ 286	2,734	76,276	(11,091)	68,205	6,705
Balances, in shares at Jan. 31, 2019		2,878
Balances at Jan. 31, 2019	79,634	$ 288	2,965	80,785	(11,542)	72,496	7,138
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	10,907
Other comprehensive income (loss), net of income taxes	(915)
Balances, in shares at Oct. 31, 2019		2,839
Balances at Oct. 31, 2019	78,307	$ 284	3,091	80,656	(12,382)	71,649	6,658
Balances, in shares at Apr. 30, 2019		2,862
Balances at Apr. 30, 2019	74,910	$ 286	2,734	76,276	(11,091)	68,205	6,705
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	3,680			3,610		3,610	70
Other comprehensive income (loss), net of income taxes	(95)				(179)	(179)	84
Dividends	15			15		15
Purchase of Company stock (in shares)		(15)
Purchase of Company stock	(1,555)	$ (2)	(54)	(1,499)		(1,555)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	6						6
Other	170	$ 1	200	30		231	(61)
Balances, in shares at Jul. 31, 2019		2,847
Balances at Jul. 31, 2019	77,131	$ 285	2,880	78,432	(11,270)	70,327	6,804
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	3,321			3,288		3,288	33
Other comprehensive income (loss), net of income taxes	(1,305)				(1,112)	(1,112)	(193)
Dividends	5			5		5
Purchase of Company stock (in shares)		(10)
Purchase of Company stock	(1,108)	$ (1)	(39)	(1,068)		(1,108)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	3						3
Other, in shares		2
Other	260		250	(1)		249	11
Balances, in shares at Oct. 31, 2019		2,839
Balances at Oct. 31, 2019	$ 78,307	$ 284	$ 3,091	$ 80,656	$ (12,382)	$ 71,649	$ 6,658

Consolidated Statement Of Share

Consolidated Statement Of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share)	$ 0	$ 0	$ 2.12	$ 2.08

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Cash flows from operating activities:
Consolidated net income	$ 10,907	$ 3,366
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	8,159	7,947
Unrealized (gains) and losses	(911)	3,727
(Gains) and losses for disposal of business operations	(1)	4,846
Deferred income taxes	574	(346)
Other operating activities	938	735
Changes in certain assets and liabilities, net of effects of acquisitions and dispositions:
Receivables, net	661	178
Inventories	(7,558)	(7,279)
Accounts payable	2,925	4,137
Accrued liabilities	(1,107)	103
Accrued income taxes	(48)	(106)
Net cash provided by operating activities	14,539	17,308
Cash flows from investing activities:
Payments for property and equipment	(7,765)	(7,014)
Proceeds from the disposal of property and equipment	218	308
Proceeds from the disposal of certain operations	833	0
Payments for business acquisitions, net of cash acquired	(56)	(13,269)
Other investing activities	485	(579)
Net cash used in investing activities	(6,285)	(20,554)
Cash flows from financing activities:
Net change in short-term borrowings	(282)	2,611
Proceeds from issuance of long-term debt	5,492	15,851
Repayments of long-term debt	(1,907)	(3,050)
Dividends paid	(4,545)	(4,597)
Purchase of Company stock	(4,829)	(4,161)
Dividends paid to noncontrolling interest	(407)	(252)
Other financing activities	(735)	(481)
Net cash provided by (used in) financing activities	(7,213)	5,921
Effect of exchange rates on cash, cash equivalents and restricted cash	(166)	(485)
Net increase (decrease) in cash, cash equivalents and restricted cash	875	2,190
Cash, cash equivalents and restricted cash at beginning of year	7,756	7,014
Cash, cash equivalents and restricted cash at end of period	$ 8,631	$ 9,204

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	9 Months Ended
	Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation	Summary of Significant Accounting Policies Basis of Presentation The Condensed Consolidated Financial Statements of Walmart Inc. and its subsidiaries ("Walmart" or the "Company") and the accompanying notes included in this Quarterly Report on Form 10-Q are unaudited. In the opinion of management, all adjustments necessary for the fair presentation of the Condensed Consolidated Financial Statements have been included. Such adjustments are of a normal, recurring nature. The Condensed Consolidated Financial Statements, and the accompanying notes, are prepared in accordance with generally accepted accounting principles in the United States ("GAAP") and do not contain certain information included in the Company's Annual Report on Form 10-K for the fiscal year ended January 31, 2019 ("fiscal 2019 "). Therefore, the interim Condensed Consolidated Financial Statements should be read in conjunction with that Annual Report on Form 10-K. The Company's Consolidated Financial Statements are based on a fiscal year ending 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 October related to the operations consolidated using a lag that materially affected the Condensed Consolidated Financial Statements. The Company's business is seasonal to a certain extent due to calendar events and national and religious holidays, as well as weather patterns. Historically, the Company's highest sales volume and operating income have occurred in the fiscal quarter ending January 31. Restricted Cash Restricted cash not classified as part of cash and cash equivalents was $25 million and $34 million as of October 31, 2019 and January 31, 2019 , respectively, and was primarily recorded in other long-term assets in the Condensed Consolidated Balance Sheets. Restricted cash not classified as part of cash and cash equivalents was $30 million and approximately $0.3 billion as of October 31, 2018 and January 31, 2018, respectively, and was primarily recorded in other long-term assets in the Condensed Consolidated Balance Sheets. Inventories At October 31, 2019 and January 31, 2019 , the Company's inventories valued at LIFO approximated those inventories as if they were valued at FIFO. Leases 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. The Company adopted this ASU and related amendments as of February 1, 2019 under the modified retrospective approach and elected certain practical expedients permitted under the transition guidance, including to retain the historical lease classification as well as relief from reviewing expired or existing contracts to determine if they contain leases. For leases subject to index or rate adjustments, the most current index or rate adjustments were included in the measurement of operating lease obligations at adoption. The adoption of this ASU and related amendments resulted in a $14.8 billion increase to total assets and a $15.1 billion increase to total liabilities in the first quarter of the fiscal year ending January 31, 2020 ("fiscal 2020"). In the first quarter of fiscal 2020, the Company recognized $16.8 billion and $17.5 billion of operating lease right-of-use assets and operating lease obligations, respectively, and removed $2.2 billion and $1.7 billion , respectively, of assets and liabilities related to financial obligations connected with the construction of leased stores. Several other asset and liability line items in the Company's Condensed Consolidated Balance Sheet were also impacted by immaterial amounts. Additionally, the adoption resulted in a cumulative-effect adjustment to retained earnings of approximately $0.3 billion , net of tax, which primarily consisted of the recognition of impairment. The Company’s Condensed Consolidated Statements of Income and Condensed Consolidated Statements of Cash Flows were immaterially impacted. Updated accounting policies as a result of the adoption of this ASU are described below. Note 10 provides additional lease disclosures. For any new or modified lease, the Company, at the inception of the contract, determines whether a contract is or contains a lease. The Company records right-of-use ("ROU") assets and lease obligations for its finance and operating leases, which are initially recognized based on the discounted future minimum lease payments over the term of the lease. As the rate implicit in the Company's leases is not easily determinable, the Company’s applicable incremental borrowing rate is used in calculating the present value of the sum of the lease payments. Lease term is defined as the non-cancelable period of the lease plus any options to extend or terminate the lease when it is reasonably certain that the Company will exercise the option. The Company has elected not to recognize ROU asset and lease obligations for its short-term leases, which are defined as leases with an initial term of 12 months or less. For a majority of all classes of underlying assets, the Company has elected to not separate lease from non-lease components. For leases in which the lease and non-lease components have been combined, the variable lease expense includes expenses such as common area maintenance, utilities, and repairs and maintenance. Revenue Recognition Contract Balances Contract balances as a result of transactions with customers primarily consist of receivables included in receivables, net, and deferred gift card revenue included in accrued liabilities in the Company's Condensed Consolidated Balance Sheets. The following table provides the Company's receivables and deferred gift card revenue from transactions with customers: (Amounts in millions) October 31, 2019 January 31, 2019 Assets: Receivables from transactions with customers, net $ 2,618 $ 2,538 Liabilities: Deferred gift card revenue $ 1,863 $ 1,932 Derivatives In fiscal 2020, the Company adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities . The adoption of the standard had no current or historical impact on the Company's Condensed Consolidated Financial Statements. The Company continues to use qualitative methods to assess the effectiveness of its designated hedging relationships. Upon adopting ASU 2017-12, the Company modified its existing hedge documentation to use a quantitative method for assessing effectiveness when the hedge is subsequently determined to be ineffective under the qualitative method. There were no other significant changes to the Company's accounting policies for derivatives. Recent Accounting Pronouncements Financial Instruments 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 has substantially completed its evaluation of its existing financial instruments and does not expect the adoption of this ASU to materially impact the Company's Condensed Consolidated Financial Statements.

Net Income (Loss) Per Common Sh

Net Income (Loss) Per Common Share (Notes)	9 Months Ended
	Oct. 31, 2019
Earnings Per Share [Abstract]
Net income (loss) 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 anti-dilutive and not included in the calculation of diluted net income per common share attributable to Walmart for the three and nine months ended October 31, 2019 and 2018 . 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: Three Months Ended October 31, Nine Months Ended October 31, (Amounts in millions, except per share data) 2019 2018 2019 2018 Numerator Consolidated net income $ 3,321 $ 1,817 $ 10,907 $ 3,366 Consolidated net income attributable to noncontrolling interest (33 ) (107 ) (167 ) (383 ) Consolidated net income attributable to Walmart $ 3,288 $ 1,710 $ 10,740 $ 2,983 Denominator Weighted-average common shares outstanding, basic 2,843 2,924 2,855 2,940 Dilutive impact of share-based awards 18 17 17 16 Weighted-average common shares outstanding, diluted 2,861 2,941 2,872 2,956 Net income per common share attributable to Walmart Basic $ 1.16 $ 0.58 $ 3.76 $ 1.01 Diluted 1.15 0.58 3.74 1.01

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss (Notes)	9 Months Ended
	Oct. 31, 2019
Other Comprehensive Income (Loss), Tax [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The following table provides the changes in the composition of total accumulated other comprehensive loss for each of the three months ended April 30, 2019, July 31, 2019 and October 31, 2019 , respectively: (Amounts in millions and net of immaterial income taxes) Currency Net Investment Hedges Cash Flow Hedges Minimum Total Balances as of February 1, 2019 $ (12,085 ) $ 1,395 $ (140 ) $ (712 ) $ (11,542 ) Other comprehensive income (loss) before reclassifications, net 496 108 (145 ) (7 ) 452 Reclassifications to income, net (23 ) — 14 8 (1 ) Balances as of April 30, 2019 $ (11,612 ) $ 1,503 $ (271 ) $ (711 ) $ (11,091 ) Other comprehensive income (loss) before reclassifications, net (165 ) 140 (172 ) (5 ) (202 ) Reclassifications to income, net — — 14 9 23 Balances as of July 31, 2019 $ (11,777 ) $ 1,643 $ (429 ) $ (707 ) $ (11,270 ) Other comprehensive income (loss) before reclassifications, net (995 ) (113 ) (12 ) 6 (1,114 ) Reclassifications to income, net — — — 2 2 Balances as of October 31, 2019 $ (12,772 ) $ 1,530 $ (441 ) $ (699 ) $ (12,382 ) The following table provides the changes in the composition of total accumulated other comprehensive loss for each of the three months ended April 30, 2018, July 31, 2018 and October 31, 2018 , respectively: (Amounts in millions and net of immaterial income taxes) Currency Translation and Other Unrealized Gain on Available-for-Sale Securities Net Investment Hedges Cash Flow Hedges Minimum Pension Liability Total Balances as of February 1, 2018 $ (12,136 ) $ 1,646 $ 1,030 $ 122 $ (843 ) $ (10,181 ) Adoption of new accounting standards on February 1, 2018, net (1) 89 (1,646 ) 93 28 — (1,436 ) Other comprehensive income (loss) before reclassifications, net 1,302 — 68 (86 ) 32 1,316 Reclassifications to income, net — — — 9 11 20 Balances as of April 30, 2018 $ (10,745 ) $ — $ 1,191 $ 73 $ (800 ) $ (10,281 ) Other comprehensive income (loss) before reclassifications, net (2,395 ) — 193 (171 ) (3 ) (2,376 ) Reclassifications to income, net — — — 16 12 28 Balances as of July 31, 2018 $ (13,140 ) $ — $ 1,384 $ (82 ) $ (791 ) $ (12,629 ) Other comprehensive income (loss) before reclassifications, net (888 ) — 114 (121 ) 2 (893 ) Reclassifications to income, net 2,031 — — 12 10 2,053 Balances as of October 31, 2018 $ (11,997 ) $ — $ 1,498 $ (191 ) $ (779 ) $ (11,469 ) (1) Primarily relates to the adoption of ASU 2016-01, Financial Instruments–Overall and ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. Amounts reclassified from accumulated other comprehensive loss to net income for derivative instruments are recorded in interest, net, in the Company's Condensed Consolidated Statements of Income. Amounts reclassified from accumulated other comprehensive loss to net income for the minimum pension liability, as well as the cumulative translation resulting from the disposition of a business, are recorded in other gains and losses in the Company's Condensed Consolidated Statements of Income.

Short-term Borrowings and Long-

Short-term Borrowings and Long-term Debt (Notes)	9 Months Ended
	Oct. 31, 2019
Short-term Borrowings and Long-term Debt [Abstract]
Debt Disclosure [Text Block]	Short-term Borrowings and Long-term Debt The Company has various committed lines of credit in the U.S. that are used to support its commercial paper program. In total, the Company has committed lines of credit in the U.S. of $15 billion at October 31, 2019 and January 31, 2019 , all undrawn. The following table provides the changes in the Company's long-term debt for the nine months ended October 31, 2019 : (Amounts in millions) Long-term debt due within one year Long-term debt Total Balances as of February 1, 2019 $ 1,876 $ 43,520 $ 45,396 Proceeds from issuance of long-term debt — 5,492 5,492 Repayments of long-term debt (1,907 ) — (1,907 ) Reclassifications of long-term debt 4,129 (4,129 ) — Other (5 ) 29 24 Balances as of October 31, 2019 $ 4,093 $ 44,912 $ 49,005 Debt Issuances Information on long-term debt issued during the nine months ended October 31, 2019 is as follows: (Amounts in millions) Issue Date Principal Amount Maturity Date Fixed vs. Floating Interest Rate Net Proceeds April 23, 2019 $1,500 July 8, 2024 Fixed 2.850% $ 1,493 April 23, 2019 $1,250 July 8, 2026 Fixed 3.050% 1,242 April 23, 2019 $1,250 July 8, 2029 Fixed 3.250% 1,243 September 24, 2019 $500 September 24, 2029 Fixed 2.375% 497 September 24, 2019 $1,000 September 24, 2049 Fixed 2.950% 975 Various $42 Various Various Various 42 Total $ 5,492 These issuances, which are used for general corporate purposes, are senior, unsecured notes which rank equally with all other senior, unsecured debt obligations of the Company, and are not convertible or exchangeable. These issuances do not contain any financial covenants which restrict the Company's ability to pay dividends or repurchase company stock. Maturities The following table provides details of debt repayments during the nine months ended October 31, 2019 : (Amounts in millions) Maturity Date Original Amount Fixed vs. Floating Interest Rate Repayment February 1, 2019 $500 Fixed 4.125% $ 364 October 20, 2019 $300 Floating 2.281% 300 October 20, 2019 $1,200 Fixed 1.750% 1,200 Various $43 Various Various 43 Total repayment of matured debt $ 1,907

Fair Value Measurements (Notes)

Fair Value Measurements (Notes)	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Fair value measurements	Fair Value Measurements 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 has equity investments, primarily its investment in JD.com, Inc. ("JD"), measured at fair value on a recurring basis included in other long-term assets in the accompanying Condensed Consolidated Balance Sheet as follows: • The purchased portion of the investment in JD measured using Level 1 inputs, and • The portion of the investment in JD received in exchange for selling certain assets related to Yihaodian, the Company's former eCommerce operations in China, measured using Level 2 inputs. Fair value is determined primarily using quoted prices in active markets for similar assets. Information for the fair value of the Company's investment in JD is as follows: (Amounts in millions) Fair Value as of October 31, 2019 Fair Value as of January 31, 2019 Investment in JD measured using Level 1 inputs $ 2,244 $ 1,791 Investment in JD measured using Level 2 inputs 2,249 1,792 Total $ 4,493 $ 3,583 The changes in fair value for the Company's investment in JD are included in other gains and losses in the Company's Condensed Consolidated Statements of Income. The Company also holds derivative instruments. Derivative 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 yield and foreign currency forward curves. As of October 31, 2019 and January 31, 2019 , the notional amounts and fair values of these derivatives were as follows: October 31, 2019 January 31, 2019 (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 $ 66 $ 4,000 $ (78 ) Receive fixed-rate, pay fixed-rate cross-currency swaps designated as net investment hedges 3,750 440 2,250 334 Receive fixed-rate, pay fixed-rate cross-currency swaps designated as cash flow hedges 4,078 (658 ) 4,173 (272 ) Total $ 11,828 $ (152 ) $ 10,423 $ (16 ) 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. The Company recorded other immaterial impairment charges to assets measured at fair value on a nonrecurring basis during the three and nine months ended October 31, 2019 . As discussed in Note 8 , the Company met the criteria to recognize Walmart Brazil as held for sale in the second quarter of fiscal 2019. Prior to meeting the held for sale criteria, the carrying values of the long-lived assets were concluded to be recoverable based upon cash flows expected to be generated over the assets' useful lives. When the sale of Walmart Brazil became probable, the Company reclassified the related assets and liabilities to held for sale and measured the disposal group at fair value, less costs to sell. The assets of the disposal group totaled $3.3 billion and were comprised of $1.0 billion in current assets, $1.6 billion in property and equipment and property under capital lease and financing obligations, net, and $0.7 billion of other long-term assets. These assets were fully impaired during the second quarter of fiscal 2019 as the carrying value of the disposal group exceeded the fair value, less costs to sell. The Company recorded a pre-tax net loss in the Walmart International segment of approximately $4.8 billion during the nine months ended October 31, 2018, in other gains and losses in the Company's Condensed Consolidated Statements of Income. In the third quarter of fiscal 2019, the sale was completed as discussed in Note 8 . Other Fair Value Disclosures The Company records cash and cash equivalents, restricted cash, 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 October 31, 2019 and January 31, 2019 , are as follows: October 31, 2019 January 31, 2019 (Amounts in millions) Carrying Value Fair Value Carrying Value Fair Value Long-term debt, including amounts due within one year $ 49,005 $ 57,016 $ 45,396 $ 49,570

Derivative Financial Instrument

Derivative Financial Instruments (Notes)	9 Months Ended
	Oct. 31, 2019
Summary of Derivative Instruments [Abstract]
Derivative financial instruments	Derivative Financial Instruments In connection with various derivative agreements, including master netting arrangements, the Company held cash collateral from counterparties of $219 million and $220 million at October 31, 2019 and January 31, 2019 , respectively. 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 October 31, 2019 or January 31, 2019 . At October 31, 2019 and January 31, 2019 , the Company had ¥180 billion 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 at October 31, 2019 and January 31, 2019 , 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 . The Company's derivative instruments, as well as its nonderivative debt instruments designated and qualifying as net investment hedges, were classified as follows in the Company's Condensed Consolidated Balance Sheets: October 31, 2019 January 31, 2019 (Amounts in millions) Fair Value Net Investment Cash Flow Fair Value Net Investment Instruments Cash Flow Derivative instruments Derivative assets: Other long-term assets $ 67 $ 440 $ — $ — $ 334 $ 78 Derivative liabilities: Deferred income taxes and other $ 1 $ — $ 658 $ 78 $ — $ 350 Nonderivative hedging instruments: Long-term debt $ — $ 3,830 $ — $ — $ 3,863 $ — 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.

Contingencies (Notes)

Contingencies (Notes)	9 Months Ended
	Oct. 31, 2019
Contingencies [Abstract]
Contingencies	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 Condensed 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 or settled by the Company, individually or in the aggregate, may result in a liability material to the Company's financial condition, results of operations or cash flows. ASDA Equal Value Claims ASDA Stores Ltd. ("Asda"), a wholly-owned subsidiary of the Company, is a defendant in over 30,000 equal value ("Equal Value") claims that began in 2008 and 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. In March 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. Ultimately, the Court of Appeals declined to strike out any claims relying on the Employment Tribunal’s finding that claimants had not deliberately disregarded the Tribunal’s procedural rule. As to the initial phase of the Equal Value claims, in October 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. Asda appealed the ruling and the appeal is currently pending before t he Supreme Court of the United Kingdom. Notwithstanding the appeal, claimants are 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. Accordingly, the Company can provide no assurance as to the scope and outcomes of these matters and no assurance to whether its business, financial position, results of operations or cash flows will not be materially adversely affected. The Company believes it has substantial factual and legal defenses to these claims, and intends to defend the claims vigorously. National Prescription Opiate Litigation and Related Matters In December 2017, the United States Judicial Panel on Multidistrict Litigation 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. Similar cases that name the Company have also been filed in state courts by state, local and tribal governments, health care providers and other plaintiffs. Plaintiffs are seeking compensatory and punitive damages, as well as injunctive relief including abatement. The Company cannot predict the number of such claims that may be filed, but believes it has substantial factual and legal defenses to these claims, and intends to defend the claims vigorously. The Company has also been responding to subpoenas, information requests and investigations from governmental entities related to nationwide controlled substance dispensing and distribution practices involving opioids. The Company cannot reasonably estimate any loss or range of loss that may arise from these matters. Accordingly, the Company can provide no assurance as to the scope and outcome of these matters and no assurance as to whether its business, financial position, results of operations or cash flows will not be materially adversely affected. FCPA Investigation and Related Matters As previously disclosed, the Company was under investigation by the U.S. Department of Justice (the "DOJ") and the Securities and Exchange Commission (the "SEC") regarding possible violations of the U.S. Foreign Corrupt Practices Act (the "FCPA"). Throughout the investigative process, the Company cooperated with the DOJ and the SEC, and on June 20, 2019, the Company announced the resolution of the investigations with the DOJ and the SEC and paid $283 million in June 2019 consisting of a combination of penalties, disgorgement and interest as further described below (the "Settlement Amount"). The Company previously recorded the Settlement Amount in the Company's fiscal 2018 consolidated financial statements in anticipated settlement of these matters. The resolution of the investigations with the DOJ and SEC included: 1. A non-prosecution agreement (the "NPA") between the DOJ and the Company for a three-year term. Pursuant to the NPA, the Company paid a $138 million penalty and agreed to maintain the Company's anti-corruption compliance program for three years, certain reporting obligations for three years, and a limited monitorship with a third party for two years regarding the Company's anti-corruption compliance program, with the possibility of a third year pending the results of the monitorship during the initial two-year period. The DOJ agreed that it will not prosecute the Company for any conduct described in the NPA provided that the Company performs its obligations under the NPA for the three-year term. 2. A plea agreement (the "Plea Agreement") entered into for a three-year term by the DOJ and WMT Brasilia S.a.r.l., an indirect wholly-owned foreign subsidiary of the Company ("WMT Brasilia") that previously owned a majority stake of the Company's Brazilian business. Through the Plea Agreement, entered in the United States District Court for the Eastern District of Virginia, WMT Brasilia pled guilty to one count of causing a books and records violation of the FCPA. The Company on behalf of WMT Brasilia was assessed a $4 million penalty, including forfeiture, that was deducted from the amount paid by the Company under the NPA. 3. A Cease-and-Desist Order entered into by the SEC in a civil administrative proceeding (the "SEC Order"), the entry of which the Company consented to with respect to certain violations of the books and records and internal controls provisions of the FCPA. The Company paid $145 million in disgorgement and interest, and agreed to make certain reports to the SEC on its anti-corruption compliance and remediation efforts for two years, and cease and desist any violations of the books and records and internal controls provisions of the FCPA. On June 20, 2019, the Company also entered into an Administrative Agreement with the U.S. Environmental Protection Agency (the "EPA") for a three-year term, which replaces the interim administrative agreement between the Company and the EPA dated May 28, 2013. The May 28, 2013 agreement arose as part of a settlement by the Company regarding certain hazardous waste materials matters with several governmental authorities. The new EPA agreement, among other things, resolved any debarment or suspension as to participation in federal government programs by the Company due to the NPA, the Plea Agreement, and the SEC Order, provided that the Company fulfills the terms and conditions of the new EPA agreement, which requires reporting by the Company to the EPA periodically during the three-year term, and requires a new, limited two-year monitorship. The monitor referenced above that has been engaged by the Company under the NPA will also monitor compliance with the new EPA agreement. If the DOJ monitorship is extended as referenced above, the EPA monitorship may also be extended for an additional year.

Disposals, Acquisitions and Rel

Disposals, Acquisitions and Related Items (Notes)	9 Months Ended
	Oct. 31, 2019
Business Combinations [Abstract]
Disposals, acquisitions and related items	Disposals, Acquisitions, and Other Items The following disposals, acquisitions and other items relate to the Company's Walmart International segment. Other immaterial transactions have also occurred or have been announced. Walmart Brazil In August 2018, the Company sold an 80 percent stake of Walmart Brazil to Advent International ("Advent"). Under the terms, Advent agreed to contribute additional capital to the business over a three-year period, and Walmart agreed to indemnify Advent for certain matters. As a result, the Company recorded a pre-tax net loss of $4.8 billion during the nine months ended October 31, 2018 in other gains and losses in the Company's Condensed Consolidated Statement of Income. Substantially all of this charge was recorded during the second quarter of fiscal 2019 upon meeting the held for sale criteria, and an additional immaterial amount was recorded during the third quarter of fiscal 2019 upon closure of the sale. In calculating the loss, the fair value of the disposal group was reduced by $0.8 billion related to an indemnity, for which a liability was recognized upon closing and is recorded in deferred income taxes and other in the Company's Condensed Consolidated Balance Sheets. The Company indemnified Advent for certain pre-closing tax and legal contingencies and other matters for up to R$2.3 billion , adjusted for interest based on the Brazilian interbank deposit rate. The Company deconsolidated the financial statements of Walmart Brazil during the third quarter of fiscal 2019 and began accounting for its remaining 20 percent ownership interest using the equity method of accounting. This equity method investment was determined to have no fair value and continues to have no carrying value. Flipkart Private Limited ("Flipkart") In August 2018, the Company acquired 81 percent of the outstanding shares, or 77 percent of the diluted shares, of Flipkart, an Indian-based eCommerce marketplace , for cash consideration of approximately $16 billion . The acquisition increased the Company's investment in India, a large, growing economy. In the second quarter of fiscal 2020, the Company finalized the valuation of assets acquired and liabilities assumed for the Flipkart acquisition as follows: • Assets of $24.1 billion , which is comprised primarily of $2.2 billion in cash and cash equivalents, $2.8 billion in other current assets, $5.0 billion in intangible assets and $13.5 billion in goodwill. Of the intangible assets, $4.7 billion represents the fair value of trade names, each with an indefinite life, which were estimated using the income approach based on Level 3 unobservable inputs. The remaining $0.3 billion of intangible assets primarily related to acquired technology with a life of 3 years. The goodwill arising from the acquisition consisted largely of anticipated synergies and economies of scale primarily related to procurement and logistics and is not expected to be deductible for tax purposes; • Liabilities of $3.7 billion , which is comprised primarily of $1.8 billion of current liabilities and $1.7 billion of deferred income taxes; and • Noncontrolling interest of $4.3 billion

Segments (Notes)

Segments (Notes)	9 Months Ended
	Oct. 31, 2019
Segment Reporting Information, Profit (Loss) [Abstract]
Segments	Segments and Disaggregated Revenue 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, Canada, Central America, Chile, China, India, Japan, Mexico, and the United Kingdom, as well as Brazil until the sale of the majority stake in Walmart Brazil as discussed in Note 8 in August 2018. 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 merchandising concept in the U.S., as well as eCommerce and omni-channel initiatives. The Walmart International segment consists of the Company's operations outside of the U.S., as well as eCommerce and omni-channel initiatives. The Sam's Club segment includes the warehouse membership clubs in the U.S., as well as samsclub.com and omni-channel initiatives. 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. Net sales by segment are as follows: Three Months Ended October 31, Nine Months Ended October 31, (Amounts in millions) 2019 2018 2019 2018 Net sales: Walmart U.S. $ 83,189 $ 80,583 $ 248,733 $ 241,146 Walmart International 29,167 28,793 87,081 88,507 Sam's Club 14,625 14,521 43,504 42,933 Net sales $ 126,981 $ 123,897 $ 379,318 $ 372,586 Operating income by segment, as well as operating loss for corporate and support, interest, net and other gains and losses are as follows: Three Months Ended October 31, Nine Months Ended October 31, (Amounts in millions) 2019 2018 2019 2018 Operating income (loss): Walmart U.S. $ 4,176 $ 3,937 $ 12,977 $ 12,343 Walmart International 634 1,179 2,265 3,713 Sam's Club 327 379 1,258 1,106 Corporate and support (419 ) (509 ) (1,254 ) (1,272 ) Operating income 4,718 4,986 15,246 15,890 Interest, net 589 534 1,799 1,524 Other (gains) and losses (244 ) 1,876 (996 ) 8,570 Income before income taxes $ 4,373 $ 2,576 $ 14,443 $ 5,796 Disaggregated Revenues In the following tables, segment net sales are disaggregated by either merchandise category or market. In addition, net sales related to eCommerce are provided for each segment, which include omni-channel sales, where a customer initiates an order online and the order is fulfilled through a store or club. (Amounts in millions) Three Months Ended October 31, Nine Months Ended October 31, Walmart U.S. net sales by merchandise category 2019 2018 2019 2018 Grocery $ 47,845 $ 46,183 $ 140,936 $ 136,034 General merchandise 25,196 24,838 77,269 76,317 Health and wellness 9,262 8,869 28,018 26,834 Other categories 886 693 2,510 1,961 Total $ 83,189 $ 80,583 $ 248,733 $ 241,146 Of Walmart U.S.'s total net sales, approximately $5.0 billion and $3.6 billion related to eCommerce for the three months ended October 31, 2019 and 2018 , respectively. Approximately $14.0 billion and $10.2 billion related to eCommerce for the nine months ended October 31, 2019 and 2018 , respectively. (Amounts in millions) Three Months Ended October 31, Nine Months Ended October 31, Walmart International net sales by market 2019 2018 2019 2018 Mexico and Central America $ 7,913 $ 7,740 $ 23,765 $ 22,934 United Kingdom 6,961 7,407 21,355 22,572 Canada 4,608 4,639 13,366 13,596 China 2,718 2,637 8,209 8,322 Other 6,967 6,370 20,386 21,083 Total $ 29,167 $ 28,793 $ 87,081 $ 88,507 Of International's total net sales, approximately $2.9 billion and $1.5 billion related to eCommerce for the three months ended October 31, 2019 and 2018 , respectively. Approximately $7.9 billion and $3.4 billion related to eCommerce for the nine months ended October 31, 2019 and 2018 , respectively. (Amounts in millions) Three Months Ended October 31, Nine Months Ended October 31, Sam’s Club net sales by merchandise category 2019 2018 2019 2018 Grocery and consumables $ 8,967 $ 8,570 $ 26,342 $ 25,167 Fuel, tobacco and other categories 2,831 3,168 8,646 9,348 Home and apparel 1,228 1,209 3,851 3,809 Health and wellness 858 813 2,526 2,403 Technology, office and entertainment 741 761 2,139 2,206 Total $ 14,625 $ 14,521 $ 43,504 $ 42,933 Of Sam's Club's total net sales, approximately $0.9 billion and $0.7 billion related to eCommerce for the three months ended October 31, 2019 and 2018 , respectively. Approximately $2.5 billion and $1.9 billion related to eCommerce for the nine months ended October 31, 2019 and 2018 , respectively.

Leases (Notes)

Leases (Notes)	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Leases of Lessee Disclosure [Text Block]	Leases The Company leases certain retail locations, distribution and fulfillment centers, warehouses, office spaces, land and equipment throughout the U.S. and internationally. The Company's lease cost consists of the following: (Amounts in millions) Three Months Ended October 31, 2019 Nine Months Ended October 31, 2019 Operating lease cost $ 692 $ 1,989 Finance lease cost: Amortization of right-of-use assets 127 354 Interest on lease obligations 78 230 Variable lease cost 173 508 Other lease information is as follows: (Dollar amounts in millions) Nine Months Ended October 31, 2019 Cash paid for amounts included in measurement of lease obligations: Operating cash flows from operating leases $ 1,932 Operating cash flows from finance leases 202 Financing cash flows from finance leases 363 Assets obtained in exchange for operating lease obligations 1,576 Assets obtained in exchange for finance lease obligations 733 Weighted-average remaining lease term - operating leases 15.6 years Weighted-average remaining lease term - finance leases 13.9 years Weighted-average discount rate - operating leases 5.4 % Weighted-average discount rate - finance leases 8.9 % The aggregate annual lease obligations at October 31, 2019 are as follows: (Amounts in millions) Fiscal Year Operating Leases Finance Leases Remainder of 2020 $ 580 $ 173 2021 2,462 755 2022 2,242 702 2023 2,019 579 2024 1,829 498 Thereafter 16,430 5,688 Total undiscounted lease obligations 25,562 8,395 Less imputed interest (8,081 ) (3,859 ) Net lease obligations $ 17,481 $ 4,536 Upon adoption of ASU 2016-02, Leases (Topic 842), the Company's aggregate annual lease obligations includes leases with reasonably assured renewals. The aggregate minimum annual lease rentals as of January 31, 2019 for the remaining contractual term of non-cancelable leases under ASC 840 were as follows: (Amounts in millions) Fiscal Year Operating Leases (1) Capital Lease and Financing Obligations 2020 $ 1,856 $ 917 2021 1,655 856 2022 1,420 794 2023 1,233 667 2024 1,063 593 Thereafter 6,891 6,069 Total minimum rentals $ 14,118 $ 9,896 Less estimated executory costs 23 Net minimum lease payments 9,873 Financing obligation noncash gains and other 2,278 Less imputed interest (4,739 ) Present value of minimum lease payments $ 7,412 (1) Represents minimum contractual obligation for non-cancelable leases with initial or remaining terms greater than 12 months as of January 31, 2019 .

Subsequent Event (Notes)

Subsequent Event (Notes)	9 Months Ended
	Oct. 31, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Event ASDA Group Pension Scheme In the fourth quarter of fiscal 2020, Asda, Walmart and the Trustee of the Asda Group Pension Scheme (the "Plan") entered into an agreement pursuant to which Asda made a cash contribution of $1.1 billion

Accounting Policies Summary of

Accounting Policies Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The Condensed Consolidated Financial Statements of Walmart Inc. and its subsidiaries ("Walmart" or the "Company") and the accompanying notes included in this Quarterly Report on Form 10-Q are unaudited. In the opinion of management, all adjustments necessary for the fair presentation of the Condensed Consolidated Financial Statements have been included. Such adjustments are of a normal, recurring nature. The Condensed Consolidated Financial Statements, and the accompanying notes, are prepared in accordance with generally accepted accounting principles in the United States ("GAAP") and do not contain certain information included in the Company's Annual Report on Form 10-K for the fiscal year ended January 31, 2019 ("fiscal 2019 "). Therefore, the interim Condensed Consolidated Financial Statements should be read in conjunction with that Annual Report on Form 10-K. The Company's Consolidated Financial Statements are based on a fiscal year ending 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 October related to the operations consolidated using a lag that materially affected the Condensed Consolidated Financial Statements. The Company's business is seasonal to a certain extent due to calendar events and national and religious holidays, as well as weather patterns. Historically, the Company's highest sales volume and operating income have occurred in the fiscal quarter ending January 31.
Leases	Leases 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. The Company adopted this ASU and related amendments as of February 1, 2019 under the modified retrospective approach and elected certain practical expedients permitted under the transition guidance, including to retain the historical lease classification as well as relief from reviewing expired or existing contracts to determine if they contain leases. For leases subject to index or rate adjustments, the most current index or rate adjustments were included in the measurement of operating lease obligations at adoption. The adoption of this ASU and related amendments resulted in a $14.8 billion increase to total assets and a $15.1 billion increase to total liabilities in the first quarter of the fiscal year ending January 31, 2020 ("fiscal 2020"). In the first quarter of fiscal 2020, the Company recognized $16.8 billion and $17.5 billion of operating lease right-of-use assets and operating lease obligations, respectively, and removed $2.2 billion and $1.7 billion , respectively, of assets and liabilities related to financial obligations connected with the construction of leased stores. Several other asset and liability line items in the Company's Condensed Consolidated Balance Sheet were also impacted by immaterial amounts. Additionally, the adoption resulted in a cumulative-effect adjustment to retained earnings of approximately $0.3 billion , net of tax, which primarily consisted of the recognition of impairment. The Company’s Condensed Consolidated Statements of Income and Condensed Consolidated Statements of Cash Flows were immaterially impacted. Updated accounting policies as a result of the adoption of this ASU are described below. Note 10 provides additional lease disclosures. For any new or modified lease, the Company, at the inception of the contract, determines whether a contract is or contains a lease. The Company records right-of-use ("ROU") assets and lease obligations for its finance and operating leases, which are initially recognized based on the discounted future minimum lease payments over the term of the lease. As the rate implicit in the Company's leases is not easily determinable, the Company’s applicable incremental borrowing rate is used in calculating the present value of the sum of the lease payments. Lease term is defined as the non-cancelable period of the lease plus any options to extend or terminate the lease when it is reasonably certain that the Company will exercise the option. The Company has elected not to recognize ROU asset and lease obligations for its short-term leases, which are defined as leases with an initial term of 12 months or less. For a majority of all classes of underlying assets, the Company has elected to not separate lease from non-lease components. For leases in which the lease and non-lease components have been combined, the variable lease expense includes expenses such as common area maintenance, utilities, and repairs and maintenance.
Revenue Recognition	Revenue Recognition Contract Balances Contract balances as a result of transactions with customers primarily consist of receivables included in receivables, net, and deferred gift card revenue included in accrued liabilities in the Company's Condensed Consolidated Balance Sheets. The following table provides the Company's receivables and deferred gift card revenue from transactions with customers: (Amounts in millions) October 31, 2019 January 31, 2019 Assets: Receivables from transactions with customers, net $ 2,618 $ 2,538 Liabilities: Deferred gift card revenue $ 1,863 $ 1,932
Derivatives	Derivatives In fiscal 2020, the Company adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities . The adoption of the standard had no current or historical impact on the Company's Condensed Consolidated Financial Statements. The Company continues to use qualitative methods to assess the effectiveness of its designated hedging relationships. Upon adopting ASU 2017-12, the Company modified its existing hedge documentation to use a quantitative method for assessing effectiveness when the hedge is subsequently determined to be ineffective under the qualitative method. There were no other significant changes to the Company's accounting policies for derivatives.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Financial Instruments 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 has substantially completed its evaluation of its existing financial instruments and does not expect the adoption of this ASU to materially impact the Company's Condensed Consolidated Financial Statements.

Accounting Policies Summary o_2

Accounting Policies Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	The following table provides the Company's receivables and deferred gift card revenue from transactions with customers: (Amounts in millions) October 31, 2019 January 31, 2019 Assets: Receivables from transactions with customers, net $ 2,618 $ 2,538 Liabilities: Deferred gift card revenue $ 1,863 $ 1,932

Net Income (Loss) Per Common _2

Net Income (Loss) Per Common Share (Tables)	9 Months Ended
	Oct. 31, 2019
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: Three Months Ended October 31, Nine Months Ended October 31, (Amounts in millions, except per share data) 2019 2018 2019 2018 Numerator Consolidated net income $ 3,321 $ 1,817 $ 10,907 $ 3,366 Consolidated net income attributable to noncontrolling interest (33 ) (107 ) (167 ) (383 ) Consolidated net income attributable to Walmart $ 3,288 $ 1,710 $ 10,740 $ 2,983 Denominator Weighted-average common shares outstanding, basic 2,843 2,924 2,855 2,940 Dilutive impact of share-based awards 18 17 17 16 Weighted-average common shares outstanding, diluted 2,861 2,941 2,872 2,956 Net income per common share attributable to Walmart Basic $ 1.16 $ 0.58 $ 3.76 $ 1.01 Diluted 1.15 0.58 3.74 1.01

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Oct. 31, 2019
Other Comprehensive Income (Loss), Tax [Abstract]
Composition of accumulated other comprehensive loss	The following table provides the changes in the composition of total accumulated other comprehensive loss for each of the three months ended April 30, 2019, July 31, 2019 and October 31, 2019 , respectively: (Amounts in millions and net of immaterial income taxes) Currency Net Investment Hedges Cash Flow Hedges Minimum Total Balances as of February 1, 2019 $ (12,085 ) $ 1,395 $ (140 ) $ (712 ) $ (11,542 ) Other comprehensive income (loss) before reclassifications, net 496 108 (145 ) (7 ) 452 Reclassifications to income, net (23 ) — 14 8 (1 ) Balances as of April 30, 2019 $ (11,612 ) $ 1,503 $ (271 ) $ (711 ) $ (11,091 ) Other comprehensive income (loss) before reclassifications, net (165 ) 140 (172 ) (5 ) (202 ) Reclassifications to income, net — — 14 9 23 Balances as of July 31, 2019 $ (11,777 ) $ 1,643 $ (429 ) $ (707 ) $ (11,270 ) Other comprehensive income (loss) before reclassifications, net (995 ) (113 ) (12 ) 6 (1,114 ) Reclassifications to income, net — — — 2 2 Balances as of October 31, 2019 $ (12,772 ) $ 1,530 $ (441 ) $ (699 ) $ (12,382 ) The following table provides the changes in the composition of total accumulated other comprehensive loss for each of the three months ended April 30, 2018, July 31, 2018 and October 31, 2018 , respectively: (Amounts in millions and net of immaterial income taxes) Currency Translation and Other Unrealized Gain on Available-for-Sale Securities Net Investment Hedges Cash Flow Hedges Minimum Pension Liability Total Balances as of February 1, 2018 $ (12,136 ) $ 1,646 $ 1,030 $ 122 $ (843 ) $ (10,181 ) Adoption of new accounting standards on February 1, 2018, net (1) 89 (1,646 ) 93 28 — (1,436 ) Other comprehensive income (loss) before reclassifications, net 1,302 — 68 (86 ) 32 1,316 Reclassifications to income, net — — — 9 11 20 Balances as of April 30, 2018 $ (10,745 ) $ — $ 1,191 $ 73 $ (800 ) $ (10,281 ) Other comprehensive income (loss) before reclassifications, net (2,395 ) — 193 (171 ) (3 ) (2,376 ) Reclassifications to income, net — — — 16 12 28 Balances as of July 31, 2018 $ (13,140 ) $ — $ 1,384 $ (82 ) $ (791 ) $ (12,629 ) Other comprehensive income (loss) before reclassifications, net (888 ) — 114 (121 ) 2 (893 ) Reclassifications to income, net 2,031 — — 12 10 2,053 Balances as of October 31, 2018 $ (11,997 ) $ — $ 1,498 $ (191 ) $ (779 ) $ (11,469 ) (1) Primarily relates to the adoption of ASU 2016-01, Financial Instruments–Overall and ASU 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.

Short-term Borrowings and Lon_2

Short-term Borrowings and Long-term Debt (Tables)	9 Months Ended
	Oct. 31, 2019
Short-term Borrowings and Long-term Debt [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	The following table provides the changes in the Company's long-term debt for the nine months ended October 31, 2019 : (Amounts in millions) Long-term debt due within one year Long-term debt Total Balances as of February 1, 2019 $ 1,876 $ 43,520 $ 45,396 Proceeds from issuance of long-term debt — 5,492 5,492 Repayments of long-term debt (1,907 ) — (1,907 ) Reclassifications of long-term debt 4,129 (4,129 ) — Other (5 ) 29 24 Balances as of October 31, 2019 $ 4,093 $ 44,912 $ 49,005
Schedule of Fiscal Year 2020 Debt Issuances [Table Text Block]	Information on long-term debt issued during the nine months ended October 31, 2019 is as follows: (Amounts in millions) Issue Date Principal Amount Maturity Date Fixed vs. Floating Interest Rate Net Proceeds April 23, 2019 $1,500 July 8, 2024 Fixed 2.850% $ 1,493 April 23, 2019 $1,250 July 8, 2026 Fixed 3.050% 1,242 April 23, 2019 $1,250 July 8, 2029 Fixed 3.250% 1,243 September 24, 2019 $500 September 24, 2029 Fixed 2.375% 497 September 24, 2019 $1,000 September 24, 2049 Fixed 2.950% 975 Various $42 Various Various Various 42 Total $ 5,492
Schedule of Fiscal Year 2020 Debt Maturities [Table Text Block]	The following table provides details of debt repayments during the nine months ended October 31, 2019 : (Amounts in millions) Maturity Date Original Amount Fixed vs. Floating Interest Rate Repayment February 1, 2019 $500 Fixed 4.125% $ 364 October 20, 2019 $300 Floating 2.281% 300 October 20, 2019 $1,200 Fixed 1.750% 1,200 Various $43 Various Various 43 Total repayment of matured debt $ 1,907

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Oct. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	Information for the fair value of the Company's investment in JD is as follows: (Amounts in millions) Fair Value as of October 31, 2019 Fair Value as of January 31, 2019 Investment in JD measured using Level 1 inputs $ 2,244 $ 1,791 Investment in JD measured using Level 2 inputs 2,249 1,792 Total $ 4,493 $ 3,583 The changes in fair value for the Company's investment in JD are included in other gains and losses in the Company's Condensed Consolidated Statements of Income.
Notional amounts and fair values of derivatives	As of October 31, 2019 and January 31, 2019 , the notional amounts and fair values of these derivatives were as follows: October 31, 2019 January 31, 2019 (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 $ 66 $ 4,000 $ (78 ) Receive fixed-rate, pay fixed-rate cross-currency swaps designated as net investment hedges 3,750 440 2,250 334 Receive fixed-rate, pay fixed-rate cross-currency swaps designated as cash flow hedges 4,078 (658 ) 4,173 (272 ) Total $ 11,828 $ (152 ) $ 10,423 $ (16 )
Carrying value and fair value of long-term debt	The carrying value and fair value of the Company's long-term debt as of October 31, 2019 and January 31, 2019 , are as follows: October 31, 2019 January 31, 2019 (Amounts in millions) Carrying Value Fair Value Carrying Value Fair Value Long-term debt, including amounts due within one year $ 49,005 $ 57,016 $ 45,396 $ 49,570

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Oct. 31, 2019
Summary of Derivative Instruments [Abstract]
Schedule of derivative instruments in statement of financial position, fair value	The Company's derivative instruments, as well as its nonderivative debt instruments designated and qualifying as net investment hedges, were classified as follows in the Company's Condensed Consolidated Balance Sheets: October 31, 2019 January 31, 2019 (Amounts in millions) Fair Value Net Investment Cash Flow Fair Value Net Investment Instruments Cash Flow Derivative instruments Derivative assets: Other long-term assets $ 67 $ 440 $ — $ — $ 334 $ 78 Derivative liabilities: Deferred income taxes and other $ 1 $ — $ 658 $ 78 $ — $ 350 Nonderivative hedging instruments: Long-term debt $ — $ 3,830 $ — $ — $ 3,863 $ —

Segments (Tables)

Segments (Tables)	9 Months Ended
	Oct. 31, 2019
Disaggregation of Revenue [Line Items]
Segment Net Sales	Net sales by segment are as follows: Three Months Ended October 31, Nine Months Ended October 31, (Amounts in millions) 2019 2018 2019 2018 Net sales: Walmart U.S. $ 83,189 $ 80,583 $ 248,733 $ 241,146 Walmart International 29,167 28,793 87,081 88,507 Sam's Club 14,625 14,521 43,504 42,933 Net sales $ 126,981 $ 123,897 $ 379,318 $ 372,586
Operating Income by Segment, Interest, Net, and Unrealized (Gains) and Losses	Operating income by segment, as well as operating loss for corporate and support, interest, net and other gains and losses are as follows: Three Months Ended October 31, Nine Months Ended October 31, (Amounts in millions) 2019 2018 2019 2018 Operating income (loss): Walmart U.S. $ 4,176 $ 3,937 $ 12,977 $ 12,343 Walmart International 634 1,179 2,265 3,713 Sam's Club 327 379 1,258 1,106 Corporate and support (419 ) (509 ) (1,254 ) (1,272 ) Operating income 4,718 4,986 15,246 15,890 Interest, net 589 534 1,799 1,524 Other (gains) and losses (244 ) 1,876 (996 ) 8,570 Income before income taxes $ 4,373 $ 2,576 $ 14,443 $ 5,796
Walmart U.S.
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	(Amounts in millions) Three Months Ended October 31, Nine Months Ended October 31, Walmart U.S. net sales by merchandise category 2019 2018 2019 2018 Grocery $ 47,845 $ 46,183 $ 140,936 $ 136,034 General merchandise 25,196 24,838 77,269 76,317 Health and wellness 9,262 8,869 28,018 26,834 Other categories 886 693 2,510 1,961 Total $ 83,189 $ 80,583 $ 248,733 $ 241,146
Walmart International
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	(Amounts in millions) Three Months Ended October 31, Nine Months Ended October 31, Walmart International net sales by market 2019 2018 2019 2018 Mexico and Central America $ 7,913 $ 7,740 $ 23,765 $ 22,934 United Kingdom 6,961 7,407 21,355 22,572 Canada 4,608 4,639 13,366 13,596 China 2,718 2,637 8,209 8,322 Other 6,967 6,370 20,386 21,083 Total $ 29,167 $ 28,793 $ 87,081 $ 88,507
Sam's Club
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	(Amounts in millions) Three Months Ended October 31, Nine Months Ended October 31, Sam’s Club net sales by merchandise category 2019 2018 2019 2018 Grocery and consumables $ 8,967 $ 8,570 $ 26,342 $ 25,167 Fuel, tobacco and other categories 2,831 3,168 8,646 9,348 Home and apparel 1,228 1,209 3,851 3,809 Health and wellness 858 813 2,526 2,403 Technology, office and entertainment 741 761 2,139 2,206 Total $ 14,625 $ 14,521 $ 43,504 $ 42,933

Leases (Tables)

Leases (Tables)	9 Months Ended
	Oct. 31, 2019
Leases [Abstract]
Lease, Cost [Table Text Block]	The Company's lease cost consists of the following: (Amounts in millions) Three Months Ended October 31, 2019 Nine Months Ended October 31, 2019 Operating lease cost $ 692 $ 1,989 Finance lease cost: Amortization of right-of-use assets 127 354 Interest on lease obligations 78 230 Variable lease cost 173 508
Schedule of Other Information Relating to Lease Liabilities [Table Text Block]	Other lease information is as follows: (Dollar amounts in millions) Nine Months Ended October 31, 2019 Cash paid for amounts included in measurement of lease obligations: Operating cash flows from operating leases $ 1,932 Operating cash flows from finance leases 202 Financing cash flows from finance leases 363 Assets obtained in exchange for operating lease obligations 1,576 Assets obtained in exchange for finance lease obligations 733 Weighted-average remaining lease term - operating leases 15.6 years Weighted-average remaining lease term - finance leases 13.9 years Weighted-average discount rate - operating leases 5.4 % Weighted-average discount rate - finance leases 8.9 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	The aggregate annual lease obligations at October 31, 2019 are as follows: (Amounts in millions) Fiscal Year Operating Leases Finance Leases Remainder of 2020 $ 580 $ 173 2021 2,462 755 2022 2,242 702 2023 2,019 579 2024 1,829 498 Thereafter 16,430 5,688 Total undiscounted lease obligations 25,562 8,395 Less imputed interest (8,081 ) (3,859 ) Net lease obligations $ 17,481 $ 4,536
Lessee, Operating Lease, Disclosure [Table Text Block]	The aggregate minimum annual lease rentals as of January 31, 2019 for the remaining contractual term of non-cancelable leases under ASC 840 were as follows: (Amounts in millions) Fiscal Year Operating Leases (1) Capital Lease and Financing Obligations 2020 $ 1,856 $ 917 2021 1,655 856 2022 1,420 794 2023 1,233 667 2024 1,063 593 Thereafter 6,891 6,069 Total minimum rentals $ 14,118 $ 9,896 Less estimated executory costs 23 Net minimum lease payments 9,873 Financing obligation noncash gains and other 2,278 Less imputed interest (4,739 ) Present value of minimum lease payments $ 7,412 (1) Represents minimum contractual obligation for non-cancelable leases with initial or remaining terms greater than 12 months as of January 31, 2019 .

Accounting Policies Summary o_3

Accounting Policies Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019	Oct. 31, 2018	Jan. 31, 2018
Restricted Cash [Abstract]
Restricted Cash	$ 25	$ 34	$ 30	$ 300
Revenue from Contract with Customer [Abstract]
Receivables from transactions with customers, net	2,618	2,538
Deferred gift card revenue	$ 1,863	$ 1,932

Accounting Policies Summary o_4

Accounting Policies Summary of Significant Accounting Policies (Leases) (Details) - USD ($) $ in Millions	Oct. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total assets	$ 239,830		$ 219,295	$ 226,583
Operating lease right-of-use assets, net	16,944		0	0
Operating lease obligations	17,481
Retained earnings (net of tax)	$ 80,656		$ 80,785	$ 80,287
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total assets		$ 14,800
Total liabilities		15,100
Operating lease right-of-use assets, net		16,800
Operating lease obligations		17,500
Build-to-suit assets derecognized, net		(2,200)
Build-to-suit liabilities derecognized		(1,700)
Retained earnings (net of tax)		$ 300

Net Income (Loss) Per Common _3

Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Earnings Per Share [Abstract]
Consolidated net income	$ 3,321	$ 1,817	$ 10,907	$ 3,366
Consolidated net income attributable to noncontrolling interest	(33)	(107)	(167)	(383)
Consolidated net income attributable to Walmart	$ 3,288	$ 1,710	$ 10,740	$ 2,983
Weighted-average common shares outstanding, basic (shares)	2,843	2,924	2,855	2,940
Dilutive impact of share-based awards (shares)	18	17	17	16
Weighted-average common shares outstanding, diluted (shares)	2,861	2,941	2,872	2,956
Basic (dollars per share)	$ 1.16	$ 0.58	$ 3.76	$ 1.01
Diluted (dollars per share)	$ 1.15	$ 0.58	$ 3.74	$ 1.01

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Balances - beginning of period	$ (11,270)	$ (11,091)	$ (11,542)	$ (12,629)	$ (10,281)	$ (10,181)
Adoption of new accounting standard, AOCI						(1,436)
Other comprehensive income (loss) before reclassifications	(1,114)	(202)	452	(893)	(2,376)	1,316
Amounts reclassified from accumulated other comprehensive income (loss)	2	23	(1)	2,053	28	20
Balances - end of period	(12,382)	(11,270)	(11,091)	(11,469)	(12,629)	(10,281)
Currency Translation and Other
Accumulated Other Comprehensive Income Loss [Line Items]
Balances - beginning of period	(11,777)	(11,612)	(12,085)	(13,140)	(10,745)	(12,136)
Adoption of new accounting standard, AOCI						89
Other comprehensive income (loss) before reclassifications	(995)	(165)	496	(888)	(2,395)	1,302
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	(23)	2,031	0	0
Balances - end of period	(12,772)	(11,777)	(11,612)	(11,997)	(13,140)	(10,745)
Unrealized Gain on Available-for-Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balances - beginning of period				0	0	1,646
Adoption of new accounting standard, AOCI						(1,646)
Other comprehensive income (loss) before reclassifications				0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)				0	0	0
Balances - end of period				0	0	0
Net Investment Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balances - beginning of period	1,643	1,503	1,395	1,384	1,191	1,030
Adoption of new accounting standard, AOCI						93
Other comprehensive income (loss) before reclassifications	(113)	140	108	114	193	68
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0	0	0
Balances - end of period	1,530	1,643	1,503	1,498	1,384	1,191
Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Balances - beginning of period	(429)	(271)	(140)	(82)	73	122
Adoption of new accounting standard, AOCI						28
Other comprehensive income (loss) before reclassifications	(12)	(172)	(145)	(121)	(171)	(86)
Amounts reclassified from accumulated other comprehensive income (loss)	0	14	14	12	16	9
Balances - end of period	(441)	(429)	(271)	(191)	(82)	73
Minimum Pension Liability
Accumulated Other Comprehensive Income Loss [Line Items]
Balances - beginning of period	(707)	(711)	(712)	(791)	(800)	(843)
Adoption of new accounting standard, AOCI						0
Other comprehensive income (loss) before reclassifications	6	(5)	(7)	2	(3)	32
Amounts reclassified from accumulated other comprehensive income (loss)	2	9	8	10	12	11
Balances - end of period	$ (699)	$ (707)	$ (711)	$ (779)	$ (791)	$ (800)

Short-term Borrowings and Lon_3

Short-term Borrowings and Long-term Debt (Details) - USD ($)	Oct. 31, 2019	Jan. 31, 2019
Short-term Borrowings and Long-term Debt [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity	$ 15,000,000,000	$ 15,000,000,000
Line of Credit Facility, Amount Outstanding	$ 0	$ 0

Short-term Borrowings and Lon_4

Short-term Borrowings and Long-term Debt Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Jan. 31, 2019
Short-term Borrowings and Long-term Debt [Abstract]
Long-term Debt, Current Maturities	$ 4,093	$ 2,591	$ 1,876
Long-term Debt, Excluding Current Maturities	44,912	43,275	43,520
Debt, Long-term and Short-term, Combined Amount	49,005		$ 45,396
Proceeds from issuance of long-term debt, current maturities	0
Proceeds from Issuance of Long-term Debt	5,492	$ 15,851
Repayments of Long-term Debt, Book Value, Current Maturities	(1,907)
Repayments of Long-term Debt, Excluding Current Maturities, Book Value	0
Repayments of Long-term Debt, Total, Book Value	(1,907)
Reclassifications of long-term debt (to debt due within one year)	4,129
Reclassifications of long-term debt (out of long-term debt)	(4,129)
Amounts Reclassified to Short-term Debt, Total	0
Long-Term Debt, Current Maturities, Other Changes	(5)
Long-Term Debt, Excluding Current Maturities, Other Changes	29
Long-Term Debt, Other Changes	$ 24

Short-term Borrowings and Lon_5

Short-term Borrowings and Long-term Debt Schedule of Fiscal Year 2020 Debt Issuances (Details) - USD ($) $ in Millions	Sep. 24, 2019	Apr. 23, 2019	Oct. 31, 2019	Oct. 31, 2018
Schedule of Fiscal Year 2020 Debt Issuances [Line Items]
Proceeds from Issuance of Long-term Debt			$ 5,492	$ 15,851
Unsecured Debt [Member] | 2.850% Debt Issuance, Due 2024 [Member]
Schedule of Fiscal Year 2020 Debt Issuances [Line Items]
Debt Instrument, Face Amount		$ 1,500
Debt Instrument, Interest Rate, Stated Percentage		2.85%
Proceeds from Issuance of Long-term Debt		$ 1,493
Unsecured Debt [Member] | 3.050% Debt Issuance, Due 2026 [Member]
Schedule of Fiscal Year 2020 Debt Issuances [Line Items]
Debt Instrument, Face Amount		$ 1,250
Debt Instrument, Interest Rate, Stated Percentage		3.05%
Proceeds from Issuance of Long-term Debt		$ 1,242
Unsecured Debt [Member] | 3.250% Debt Issuance, Due 2029 [Member]
Schedule of Fiscal Year 2020 Debt Issuances [Line Items]
Debt Instrument, Face Amount		$ 1,250
Debt Instrument, Interest Rate, Stated Percentage		3.25%
Proceeds from Issuance of Long-term Debt		$ 1,243
Unsecured Debt [Member] | 2.375% Debt Issuance, Due 2029 [Domain]
Schedule of Fiscal Year 2020 Debt Issuances [Line Items]
Debt Instrument, Face Amount	$ 500
Debt Instrument, Interest Rate, Stated Percentage	2.375%
Proceeds from Issuance of Long-term Debt	$ 497
Unsecured Debt [Member] | 2.950% Debt Issuance, Due 2049 [Domain]
Schedule of Fiscal Year 2020 Debt Issuances [Line Items]
Debt Instrument, Face Amount	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	2.95%
Proceeds from Issuance of Long-term Debt	$ 975
Unsecured Debt [Member] | Various [Member]
Schedule of Fiscal Year 2020 Debt Issuances [Line Items]
Debt Instrument, Face Amount			42
Proceeds from Issuance of Long-term Debt			$ 42

Short-term Borrowings and Lon_6

Short-term Borrowings and Long-term Debt Schedule of Fiscal Year 2020 Debt Maturities (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 20, 2019	Feb. 01, 2019
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Repayments of Long-term Debt	$ 1,907	$ 3,050
4.125% Fixed Rate Debt (500 USD), Due 2019 [Member] | Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount				$ 500
Debt Instrument, Interest Rate, Stated Percentage				4.125%
Repayments of Long-term Debt	364
2.281% Floating Rate Debt (300 USD), Due 2019 [Member] | Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount			$ 300
Debt Instrument, Interest Rate, Stated Percentage			2.281%
Repayments of Long-term Debt	300
1.750% Fixed Rate Debt (1,200 USD), Due 2019 [Member] | Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount			$ 1,200
Debt Instrument, Interest Rate, Stated Percentage			1.75%
Repayments of Long-term Debt	1,200
Various Debt Repayments [Member] | Unsecured Debt [Member]
Schedule of Fiscal 2020 Debt Maturities [Line Items]
Debt Instrument, Face Amount	43
Repayments of Long-term Debt	$ 43

Fair Value Measurement (Investm

Fair Value Measurement (Investment in JD) (Details) - JD.com [Member] - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019
Investment in JD [Line Items]
Equity investments	$ 4,493	$ 3,583
Inputs, Level 1 [Member]
Investment in JD [Line Items]
Equity investments	2,244	1,791
Inputs, Level 2 [Member]
Investment in JD [Line Items]
Equity investments	$ 2,249	$ 1,792

Fair Value Measurements (Notion

Fair Value Measurements (Notional Amounts And Fair Values Of Interest Rate Swaps) (Details) - Recurring - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount	$ 11,828	$ 10,423
Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	(152)	(16)
Fair value hedging [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount	4,000	4,000
Fair value hedging [Member] | Interest Rate Swap [Member] | Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	66	(78)
Net investment hedging [Member] | Cross-currency swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount	3,750	2,250
Net investment hedging [Member] | Cross-currency swaps [Member] | Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	440	334
Cash flow hedges [Member] | Cross-currency swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Notional Amount	4,078	4,173
Cash flow hedges [Member] | Cross-currency swaps [Member] | Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ (658)	$ (272)

Fair Value Measurements (Carryi

Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details) - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term Debt	$ 49,005	$ 45,396
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Instrument, Fair Value Disclosure	$ 57,016	$ 49,570

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Jul. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (Loss) on Disposition of Business	$ 1	$ (4,846)
Walmart Brazil [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Disposal Group, Including Discontinued Operation, Assets			$ 3,300
Disposal Group, Including Discontinued Operation, Assets, Current			1,000
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment			1,600
Disposal Group, Including Discontinued Operation, Other Assets			$ 700
Gain (Loss) on Disposition of Business		$ (4,800)

Derivative Financial Instrume_3

Derivative Financial Instruments (Narrative) (Details) $ in Millions, ¥ in Billions, £ in Billions	3 Months Ended		9 Months Ended
	Jan. 31, 2019JPY (¥)	Jan. 31, 2019GBP (£)	Oct. 31, 2019JPY (¥)	Oct. 31, 2019GBP (£)	Oct. 31, 2019USD ($)	Jan. 31, 2019USD ($)
Derivative [Line Items]
Cash collateral held from counterparties					$ 219	$ 220
Threshold of derivative liability position requiring cash collateral					150
Collateral Already Posted, Aggregate Fair Value					$ 0	$ 0
Designated as hedging instrument | Net investment hedging [Member]
Derivative [Line Items]
Notional amount of nonderivative instruments	¥ 180	£ 1.7	¥ 180	£ 1.7

Derivative Financial Instrume_4

Derivative Financial Instruments (Balance Sheet Classification Of Financial Instruments) (Details) - USD ($) $ in Millions	Oct. 31, 2019	Jan. 31, 2019
Fair value hedging [Member] | Other assets
Derivative [Line Items]
Derivative assets	$ 67	$ 0
Fair value hedging [Member] | Deferred income taxes and other
Derivative [Line Items]
Derivative liabilities	1	78
Fair value hedging [Member] | Long-term debt
Derivative [Line Items]
Nonderivative hedging instruments	0	0
Net investment hedging [Member] | Other assets
Derivative [Line Items]
Derivative assets	440	334
Net investment hedging [Member] | Deferred income taxes and other
Derivative [Line Items]
Derivative liabilities	0	0
Net investment hedging [Member] | Long-term debt
Derivative [Line Items]
Nonderivative hedging instruments	3,830	3,863
Cash flow hedges [Member] | Other assets
Derivative [Line Items]
Derivative assets	0	78
Cash flow hedges [Member] | Deferred income taxes and other
Derivative [Line Items]
Derivative liabilities	658	350
Cash flow hedges [Member] | Long-term debt
Derivative [Line Items]
Nonderivative hedging instruments	$ 0	$ 0

Contingencies (Details)

Contingencies (Details) $ in Millions	1 Months Ended
	Jun. 30, 2019USD ($)	Oct. 31, 2019	Jan. 31, 2019USD ($)
Asda Equal Value Lawsuit [Domain]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number		30,000
Foreign Corrupt Practices Act [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss			$ 283
Litigation Settlement, Amount Awarded to Other Party	$ 283
Department of Justice [Member] | Foreign Corrupt Practices Act [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party	138
Department of Justice [Member] | WMT Brasilia S.a.r.l. [Member] | Foreign Corrupt Practices Act [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party	4
Securities and Exchange Commission [Member] | Foreign Corrupt Practices Act [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party	$ 145

Disposals, Acquisitions and R_2

Disposals, Acquisitions and Related Items (Details) R$ in Billions	Aug. 18, 2018USD ($)	Oct. 31, 2019USD ($)	Oct. 31, 2018USD ($)	Jan. 31, 2019USD ($)	Aug. 01, 2018USD ($)	Aug. 01, 2018BRL (R$)
Business Acquisition [Line Items]
Gain (Loss) on Disposition of Business		$ 1,000,000	$ (4,846,000,000)
Goodwill		30,716,000,000	31,044,000,000	$ 31,181,000,000
Flipkart [Member]
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	81.00%
Noncontrolling Interest, Diluted Ownership Percentage by Parent	77.00%
Payments to Acquire Businesses, Net of Cash Acquired	$ 16,000,000,000
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	24,100,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	2,200,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	2,800,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	5,000,000,000
Goodwill	13,500,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	4,700,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	300,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	3,700,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	1,800,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	1,700,000,000
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	$ 4,300,000,000
Walmart Brazil [Member]
Business Acquisition [Line Items]
Ownership sold, percent					80.00%	80.00%
Gain (Loss) on Disposition of Business			$ (4,800,000,000)
Loss Contingency Accrual					$ 800,000,000
Guarantor Obligations, Maximum Exposure, Undiscounted | R$						R$ 2.3
Equity method investment, ownership percentage					20.00%	20.00%
Equity Method Investments, Fair Value Disclosure					$ 0
Equity Method Investments, Carrying Value		$ 0

Segments and Disaggregated Reve

Segments and Disaggregated Revenue (Narrative) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019USD ($)	Oct. 31, 2018USD ($)	Oct. 31, 2019USD ($)segment	Oct. 31, 2018USD ($)
Revenue from External Customer [Line Items]
Number of Reportable Segments | segment			3
Net sales	$ 126,981	$ 123,897	$ 379,318	$ 372,586
Walmart U.S.
Revenue from External Customer [Line Items]
Net sales	83,189	80,583	248,733	241,146
Walmart International
Revenue from External Customer [Line Items]
Net sales	29,167	28,793	87,081	88,507
Sam's Club
Revenue from External Customer [Line Items]
Net sales	14,625	14,521	43,504	42,933
eCommerceMember | Walmart U.S.
Revenue from External Customer [Line Items]
Net sales	5,000	3,600	14,000	10,200
eCommerceMember | Walmart International
Revenue from External Customer [Line Items]
Net sales	2,900	1,500	7,900	3,400
eCommerceMember | Sam's Club
Revenue from External Customer [Line Items]
Net sales	$ 900	$ 700	$ 2,500	$ 1,900

Segment Net Sales (Details)

Segment Net Sales (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 126,981	$ 123,897	$ 379,318	$ 372,586
Walmart U.S.
Segment Reporting Information [Line Items]
Net sales	83,189	80,583	248,733	241,146
Walmart International
Segment Reporting Information [Line Items]
Net sales	29,167	28,793	87,081	88,507
Sam's Club
Segment Reporting Information [Line Items]
Net sales	$ 14,625	$ 14,521	$ 43,504	$ 42,933

Operating Income by Segment, In

Operating Income by Segment, Interest, Net, and Unrealized (Gains) and Losses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Segment Reporting Information [Line Items]
Operating income	$ 4,718	$ 4,986	$ 15,246	$ 15,890
Interest, net	589	534	1,799	1,524
Other (gains) and losses	(244)	1,876	(996)	8,570
Income before income taxes	4,373	2,576	14,443	5,796
Walmart U.S.
Segment Reporting Information [Line Items]
Operating income	4,176	3,937	12,977	12,343
Walmart International
Segment Reporting Information [Line Items]
Operating income	634	1,179	2,265	3,713
Sam's Club
Segment Reporting Information [Line Items]
Operating income	327	379	1,258	1,106
Corporate and support
Segment Reporting Information [Line Items]
Operating income	$ (419)	$ (509)	$ (1,254)	$ (1,272)

Segments and Disaggregated Re_2

Segments and Disaggregated Revenue Revenue from Contract with Customer Excluding Assessed Tax, Walmart US (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenue from External Customer [Line Items]
Net sales	$ 126,981	$ 123,897	$ 379,318	$ 372,586
Walmart U.S.
Revenue from External Customer [Line Items]
Net sales	83,189	80,583	248,733	241,146
Walmart U.S. | Grocery
Revenue from External Customer [Line Items]
Net sales	47,845	46,183	140,936	136,034
Walmart U.S. | General merchandise
Revenue from External Customer [Line Items]
Net sales	25,196	24,838	77,269	76,317
Walmart U.S. | Health and wellness
Revenue from External Customer [Line Items]
Net sales	9,262	8,869	28,018	26,834
Walmart U.S. | Other categories
Revenue from External Customer [Line Items]
Net sales	$ 886	$ 693	$ 2,510	$ 1,961

Segments and Disaggregated Re_3

Segments and Disaggregated Revenue Revenue from Contract with Customer Excluding Assessed Tax, International (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenue from External Customer [Line Items]
Net sales	$ 126,981	$ 123,897	$ 379,318	$ 372,586
Walmart International
Revenue from External Customer [Line Items]
Net sales	29,167	28,793	87,081	88,507
Mexico and Central America | Walmart International
Revenue from External Customer [Line Items]
Net sales	7,913	7,740	23,765	22,934
United Kingdom | Walmart International
Revenue from External Customer [Line Items]
Net sales	6,961	7,407	21,355	22,572
Canada | Walmart International
Revenue from External Customer [Line Items]
Net sales	4,608	4,639	13,366	13,596
China | Walmart International
Revenue from External Customer [Line Items]
Net sales	2,718	2,637	8,209	8,322
Other | Walmart International
Revenue from External Customer [Line Items]
Net sales	$ 6,967	$ 6,370	$ 20,386	$ 21,083

Segments and Disaggregated Re_4

Segments and Disaggregated Revenue Revenue from Contract with Customer Excluding Assessed Tax, Sam's Club (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018
Revenue from External Customer [Line Items]
Net sales	$ 126,981	$ 123,897	$ 379,318	$ 372,586
Sam's Club
Revenue from External Customer [Line Items]
Net sales	14,625	14,521	43,504	42,933
Sam's Club | Grocery and consumables
Revenue from External Customer [Line Items]
Net sales	8,967	8,570	26,342	25,167
Sam's Club | Fuel, tobacco and other categories
Revenue from External Customer [Line Items]
Net sales	2,831	3,168	8,646	9,348
Sam's Club | Home and apparel
Revenue from External Customer [Line Items]
Net sales	1,228	1,209	3,851	3,809
Sam's Club | Health and wellness
Revenue from External Customer [Line Items]
Net sales	858	813	2,526	2,403
Sam's Club | Technology, office and entertainment
Revenue from External Customer [Line Items]
Net sales	$ 741	$ 761	$ 2,139	$ 2,206

Leases Lease, Cost (Details)

Leases Lease, Cost (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Leases [Abstract]
Operating lease cost	$ 692	$ 1,989
Finance lease cost, amortization of right-of-use assets	127	354
Finance lease cost, interest expense	78	230
Variable lease cost	$ 173	$ 508

Leases Schedule of Other Inform

Leases Schedule of Other Information Relating to Lease Liabilities (Details) $ in Millions	9 Months Ended
	Oct. 31, 2019USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ 1,932
Operating cash flows from finance leases	202
Financing cash flows from finance leases	363
Assets obtained in exchange for operating lease obligations	1,576
Assets obtained in exchange for finance lease obligations	$ 733
Weighted-average remaining lease term - operating leases	15 years 7 months 6 days
Weighted-average remaining lease term - finance leases	13 years 10 months 24 days
Weighted-average discount rate - operating leases	5.40%
Weighted-average discount rate - finance leases	8.90%

Leases Lessee, Operating Lease,

Leases Lessee, Operating Lease, Liability, Maturity (Details) $ in Millions	Oct. 31, 2019USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2020	$ 580
2021	2,462
2022	2,242
2023	2,019
2024	1,829
Thereafter	16,430
Total undiscounted lease obligations	25,562
Less imputed interest	(8,081)
Net lease obligations	17,481
Finance Lease, Liability, Payment, Due [Abstract]
Remainder of 2020	173
2021	755
2022	702
2023	579
2024	498
Thereafter	5,688
Total undiscounted lease obligations	8,395
Less imputed interest	(3,859)
Net lease obligations	$ 4,536

Leases Leases of Lessee Disclos

Leases Leases of Lessee Disclosure (Details) $ in Millions	Jan. 31, 2019USD ($)
Leases, Operating [Abstract]
2020	$ 1,856
2021	1,655
2022	1,420
2023	1,233
2024	1,063
Thereafter	6,891
Total minimum rentals	14,118
Capital Lease Obligations [Abstract]
2020	917
2021	856
2022	794
2023	667
2024	593
Thereafter	6,069
Total minimum rentals	9,896
Less estimated executory costs	23
Net minimum lease payments	9,873
Financing obligation noncash gains and other	2,278
Less imputed interest	(4,739)
Present value of minimum lease payments	$ 7,412

Subsequent Event (Details)

Subsequent Event (Details) $ in Billions	3 Months Ended
	Jan. 31, 2020USD ($)
Subsequent Event [Member] | Pension Plan [Member] | Asda Group Pension Scheme [Member]
Subsequent Event [Line Items]
Defined Benefit Plan, Employer Contributions	$ 1.1