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, 2020		2,832
Beginning balances at Jan. 31, 2020	$ 81,552	$ 284	$ 3,247	$ 83,943	$ (12,805)	$ 74,669	$ 6,883
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	13,706			13,510		13,510	196
Other comprehensive income (loss), net of income taxes	826				1,039	1,039	(213)
Cash dividends declared	(6,116)			(6,116)		(6,116)
Purchase of Company stock (in shares)		(20)
Purchase of Company stock	(2,658)	$ (2)	(97)	(2,559)		(2,658)
Cash dividend declared to noncontrolling interest	(365)						(365)
Sale of subsidiary stock	140		29			29	111
Other (in shares)		9
Other	446		467	(15)		452	(6)
Ending balances (in shares) at Jan. 31, 2021		2,821
Ending balances at Jan. 31, 2021	87,531	$ 282	3,646	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)		(70)
Purchase of Company stock	(9,808)	$ (7)	(426)	(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)		10
Other	787	$ 1	667	(5)		663	124
Ending balances (in shares) at Jan. 31, 2022		2,761
Ending balances at Jan. 31, 2022	91,891	$ 276	4,839	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)		(74)
Purchase of Company stock	(9,866)	$ (7)	(533)	(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)		6
Other	763		633	(9)		624	139
Ending balances (in shares) at Jan. 31, 2023		2,693
Ending balances at Jan. 31, 2023	$ 83,754	$ 269	$ 4,969	$ 83,135	$ (11,680)	$ 76,693	$ 7,061