Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Capital in excess of par value	Retained earnings	Accumulated other comprehensive income (loss)	Total Walmart shareholders' equity	Noncontrolling interest
Beginning balances (in shares) at Jan. 31, 2021		8,464
Beginning balances at Jan. 31, 2021	$ 87,531	$ 846	$ 3,082	$ 88,763	$ (11,766)	$ 80,925	$ 6,606
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	13,940			13,673		13,673	267
Other comprehensive income (loss), net of income taxes	2,770				3,000	3,000	(230)
Cash dividends declared	(6,152)			(6,152)		(6,152)
Purchase of Company stock (in shares)		(210)
Purchase of Company stock	(9,808)	$ (21)	(412)	(9,375)		(9,808)
Cash dividend declared to noncontrolling interest	(416)						(416)
Sale of subsidiary stock	3,239		952			952	2,287
Other (in shares)		30
Other	787	$ 3	665	(5)		663	124
Ending balances (in shares) at Jan. 31, 2022		8,284
Ending balances at Jan. 31, 2022	91,891	$ 828	4,287	86,904	(8,766)	83,253	8,638
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	11,292			11,680		11,680	(388)
Other comprehensive income (loss), net of income taxes	(2,056)				(1,652)	(1,652)	(404)
Cash dividends declared	(6,114)			(6,114)		(6,114)
Purchase of Company stock (in shares)		(221)
Purchase of Company stock	(9,866)	$ (22)	(518)	(9,326)		(9,866)
Cash dividend declared to noncontrolling interest	(449)						(449)
Purchase of noncontrolling interest	(1,773)		(18)		(1,262)	(1,280)	(493)
Sale of subsidiary stock	66		48			48	18
Other (in shares)		17
Other	763	$ 2	631	(9)		624	139
Ending balances (in shares) at Jan. 31, 2023		8,080
Ending balances at Jan. 31, 2023	83,754	$ 808	4,430	83,135	(11,680)	76,693	7,061
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	16,270
Consolidated net income	16,285			15,511		15,511	774
Other comprehensive income (loss), net of income taxes	944				378	378	566
Cash dividends declared	(6,140)			(6,140)		(6,140)
Purchase of Company stock (in shares)		(55)
Purchase of Company stock	(2,791)	$ (6)	(150)	(2,635)		(2,791)
Cash dividend declared to noncontrolling interest	(776)						(776)
Purchase of noncontrolling interest	(2,443)		(1,076)			(1,076)	(1,367)
Sale of subsidiary stock	716		562			562	154
Other (in shares)		29
Other	800	$ 3	778	(57)		724	76
Ending balances (in shares) at Jan. 31, 2024		8,054
Ending balances at Jan. 31, 2024	$ 90,349	$ 805	$ 4,544	$ 89,814	$ (11,302)	$ 83,861	$ 6,488