CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - Equity Component [Domain] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
Net earnings including noncontrolling interests	$ 164	$ 147	$ 293	$ 608
Foreign currency translation adjustments	(32)	0	(17)	3
Unrealized loss on available-for-sale investments	0	0	0	(1)
Reclassification of foreign currency translation adjustments into earnings due to sale of business	0	0	(67)	0
Comprehensive income including noncontrolling interests	132	147	209	610
Comprehensive income attributable to noncontrolling interests	0	(1)	0	(1)
Comprehensive income attributable to Best Buy Co., Inc. shareholders	$ 132	$ 146	$ 209	$ 609