CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statement (USD $) In Millions, unless otherwise specified	11 Months Ended	12 Months Ended
Feb. 02, 2013	Jan. 31, 2015	Feb. 01, 2014
Net earnings (loss) including noncontrolling interests	$ (420)us-gaap_ProfitLoss	$ 1,235us-gaap_ProfitLoss	$ 523us-gaap_ProfitLoss
Foreign currency translation adjustments	15	(103)	(147)
Unrealized gain (loss) on available-for-sale investments	2	(3)	6
Reclassification of foreign currency translations adjustments into earnings due to sale of business	0	0	654
Reclassification of (gains) losses on available-for-sale investments into earnings	0	(4)	2
Comprehensive income (loss) including noncontrolling interests	(403)	1,125	1,038
Comprehensive income attributable to noncontrolling interests	(27)	(2)	(126)
Comprehensive income (loss) attributable to Best Buy Co., Inc. shareholders	$ (430)us-gaap_ComprehensiveIncomeNetOfTax	$ 1,123us-gaap_ComprehensiveIncomeNetOfTax	$ 912us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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