Income Taxes (Details) (USD $)	9 Months Ended
	Nov. 01, 2014	Nov. 02, 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	(22.90%)	40.00%
Income Tax Expense (Benefit), Tax Election	$ (353,000,000)
Effective Income Tax Rate Reconciliation, Percent, without Tax Election	37.90%