Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 16,270	$ 11,292	$ 13,940
Consolidated net (income) loss attributable to noncontrolling interest	(759)	388	(267)
Consolidated net income attributable to Walmart	15,511	11,680	13,673
Other comprehensive income (loss), net of income taxes
Currency translation and other	899	(1,858)	2,442
Net investment hedges	0	0	(1,202)
Cash flow hedges	56	(203)	(444)
Minimum pension liability	(11)	5	1,974
Other comprehensive income (loss), net of income taxes	944	(2,056)	2,770
Other comprehensive (income) loss attributable to noncontrolling interest	(566)	404	230
Other comprehensive income (loss) attributable to Walmart	378	(1,652)	3,000
Comprehensive income, net of income taxes	17,214	9,236	16,710
Comprehensive (income) loss attributable to noncontrolling interest	(1,325)	792	(37)
Comprehensive income attributable to Walmart	$ 15,889	$ 10,028	$ 16,673