CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Total Best Buy Co., Inc.	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning balances at Feb. 27, 2010	$ 6,964	$ 6,320	$ 42	$ 441	$ 5,797	$ 40	$ 644
Beginning balances (in shares) at Feb. 27, 2010			419
Increase (Decrease) in Shareholders' Equity
Net earnings, nine months ended	678	626	0	0	626	0	52
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	5	40	0	0	0	40	(35)
Unrealized gains on available-for-sale investments	55	55	0	0	0	55	0
Cash flow hedging instruments - unrealized gains (losses)	6	3	0	0	0	3	3
Total comprehensive income (loss)	744	724					20
Stock-based compensation	87	87	0	87	0	0	0
Stock options exercised (in shares)			5
Stock options exercised	127	127	0	127	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)			1
Issuance of common stock under employee stock purchase plan	44	44	0	44	0	0	0
Tax benefit (deficit) from stock options exercised, restricted stock vesting and employee stock purchase plan	5	5	0	5	0	0	0
Common stock dividends, $0.46 per share during the period ended November 26, 2011 and $0.43 per share during the period ended November 27, 2010, respectively	(178)	(178)	0	0	(178)	0	0
Repurchase of common stock (in shares)			(31)
Repurchase of common stock	(1,128)	(1,128)	(3)	(704)	(421)	0	0
Ending balances at Nov. 27, 2010	6,665	6,001	39	0	5,824	138	664
Ending balances (in shares) at Nov. 27, 2010			394
Beginning balances at Feb. 26, 2011	7,292	6,602	39	18	6,372	173	690
Beginning balances (in shares) at Feb. 26, 2011			393
Increase (Decrease) in Shareholders' Equity
Net earnings, nine months ended	454	467	0	0	467	0	(13)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	(88)	(84)	0	0	0	(84)	(4)
Unrealized gains on available-for-sale investments	(29)	(29)	0	0	0	(29)	0
Reclassification adjustment for gain on available-for-sale securities included in net earnings	(48)	(48)	0	0	0	(48)	0
Cash flow hedging instruments - unrealized gains (losses)	0	0	0	0	0	0	0
Total comprehensive income (loss)	289	306					(17)
Dividend distribution	(7)	0	0	0	0	0	(7)
Stock-based compensation	93	93	0	93	0	0	0
Stock options exercised (in shares)			1
Stock options exercised	26	26	0	26	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)			2
Issuance of common stock under employee stock purchase plan	38	38	0	38	0	0	0
Tax benefit (deficit) from stock options exercised, restricted stock vesting and employee stock purchase plan	(6)	(6)	0	(6)	0	0	0
Common stock dividends, $0.46 per share during the period ended November 26, 2011 and $0.43 per share during the period ended November 27, 2010, respectively	(171)	(171)	0	0	(171)	0	0
Repurchase of common stock (in shares)			(42)
Repurchase of common stock	(1,178)	(1,178)	(4)	(169)	(1,005)	0	0
Ending balances at Nov. 26, 2011	$ 6,376	$ 5,710	$ 35	$ 0	$ 5,663	$ 12	$ 666
Ending balances (in shares) at Nov. 26, 2011			354