Condensed Consolidated Statements Of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 3,726	$ 3,945
Net Income (Loss) Attributable to Noncontrolling Interest	133	161
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	133	144
Less consolidated net income attributable to redeemable noncontrolling interest	0	(17)
Consolidated net income attributable to Walmart	3,593	3,784
Other comprehensive income (loss), net of income taxes
Currency translation and other	234	(1,392)
Derivative instruments	4	(81)
Minimum pension liability	4	108
Other comprehensive income (loss), net of income taxes	242	(1,365)
Less other comprehensive income (loss) attributable to nonredeemable noncontrolling interest	42	(9)
Less other comprehensive income (loss) attributable to redeemable noncontrolling interest	0	(7)
Other comprehensive income (loss) attributable to Walmart	284	(1,381)
Comprehensive income, net of income taxes	3,968	2,580
Less comprehensive income attributable to nonredeemable noncontrolling interest	(91)	(153)
Less comprehensive income attributable to redeemable noncontrolling interest	0	(24)
Comprehensive income attributable to Walmart	$ 3,877	$ 2,403