Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 20,157	$ 16,270	$ 11,292
Consolidated net (income) loss attributable to noncontrolling interest	(721)	(759)	388
Consolidated net income attributable to Walmart	19,436	15,511	11,680
Other comprehensive income (loss), net of income taxes
Currency translation and other	(2,810)	888	(1,853)
Cash flow hedges	(49)	56	(203)
Other comprehensive income (loss), net of income taxes	(2,859)	944	(2,056)
Other comprehensive (income) loss attributable to noncontrolling interest	556	(566)	404
Other comprehensive income (loss) attributable to Walmart	(2,303)	378	(1,652)
Comprehensive income, net of income taxes	17,298	17,214	9,236
Comprehensive (income) loss attributable to noncontrolling interest	(165)	(1,325)	792
Comprehensive income attributable to Walmart	$ 17,133	$ 15,889	$ 10,028