Condensed Consolidated Statements 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	Nonredeemable Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		8,080
Beginning balance 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	1,896			1,673		1,673	223
Other comprehensive income (loss), net of income taxes	742				533	533	209
Dividends declared	(6,139)			(6,139)		(6,139)
Purchase of Company stock (in shares)		(14)
Purchase of Company stock	(671)	$ (1)	(38)	(632)		(671)
Dividends to noncontrolling interest	(761)						(761)
Sale of subsidiary stock	483		389			389	94
Other (in shares)		15
Other	(73)	$ 1	(72)	(2)		(73)
Ending balance (in shares) at Apr. 30, 2023		8,081
Ending balance at Apr. 30, 2023	79,231	$ 808	4,709	78,035	(11,147)	72,405	6,826
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		8,081
Beginning balance (in shares)		8,054
Beginning balance at Jan. 31, 2024	90,349	$ 805	4,544	89,814	(11,302)	83,861	6,488
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	5,313			5,104		5,104	209
Consolidated net income	5,307
Other comprehensive income (loss), net of income taxes	7				(65)	(65)	72
Dividends declared	(6,683)			(6,683)		(6,683)
Purchase of Company stock (in shares)		(18)
Purchase of Company stock	(1,051)	$ (2)	(50)	(999)		(1,051)
Dividends to noncontrolling interest	(5)						(5)
Sale of subsidiary stock	15		10			10	5
Other (in shares)		13
Other	128	$ 2	121	(6)		117	11
Ending balance (in shares) at Apr. 30, 2024		8,049
Ending balance at Apr. 30, 2024	$ 88,073	$ 805	$ 4,625	$ 87,230	$ (11,367)	$ 81,293	$ 6,780
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		8,049