Income Taxes (Details) (USD $)	6 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Mar. 03, 2012 Best Buy Europe [Member]
Effective Income Tax Rate Reconciliation [Line Items]
Profit Share Buy-Out Purchase Price			$ 1,300,000,000
Effective Income Tax Rate Reconciliation, Percent	(50.00%)	39.40%
Income Tax Expense (Benefit), Tax Election	$ (353,000,000)
Effective Income Tax Rate Reconciliation, Percent, without Tax Election		37.20%