The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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Fair Value Measurements (Details 3) (USD $) In Millions, unless otherwise specified	11 Months Ended		12 Months Ended		11 Months Ended	12 Months Ended	11 Months Ended	12 Months Ended	11 Months Ended	12 Months Ended			3 Months Ended	11 Months Ended	12 Months Ended		11 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Mar. 03, 2012	Feb. 26, 2011	Feb. 02, 2013 Continuing Operations [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Mar. 03, 2012 Continuing Operations [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Feb. 02, 2013 Discontinued Operations [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Mar. 03, 2012 Discontinued Operations [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Feb. 02, 2013 Discontinued Operations [Member] Trade Names [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Mar. 03, 2012 Discontinued Operations [Member] Trade Names [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Mar. 03, 2012 Best Buy Europe [Member] Continuing Operations [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Feb. 02, 2013 Best Buy Europe [Member] Continuing Operations [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]	Mar. 03, 2012 International [Member]	Feb. 02, 2013 International [Member]	Mar. 03, 2012 International [Member]	Feb. 26, 2011 International [Member]	Feb. 02, 2013 International [Member] Continuing Operations [Member] Fair Value, Measurements, Nonrecurring [Member] Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill impairments	$ 822	$ 1,207	$ 1,207	$ 0							$ 1,207		$ 1,207	$ 819	$ 1,207	$ 0	$ 822
Goodwill, remaining net carrying value											0	0
Property and equipment, impairments					70	32	0	111
Property and equipment, remaining net carrying value					0	0	0	0
Investments, impairments					27	0
Investments, remaining net carrying value	21		82		38	0
Tradename, impairments									0	3
Tradename, remaining net carrying value									0	0
Total impairments					919	1,239	0	114
Total remaining net carrying value					$ 38	$ 0	$ 0	$ 0