CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Total Best Buy Co., Inc. [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
Beginning balances at Feb. 02, 2013	$ 3,715	$ 3,061	$ 34	$ 54	$ 2,861	$ 112	$ 654
Beginning balances (in shares) at Feb. 02, 2013			338
Increase (Decrease) in Shareholders' Equity
Net earnings (loss), three months ended	(73)	(81)	0	0	(81)	0	8
Foreign currency translation adjustments	(63)	(33)	0	0	0	(33)	(30)
Unrealized gain (loss) on available-for-sale investments	3	3	0	0	0	3	0
Tax deficit from stock options exercised, restricted stock vesting and employee stock purchase plan	(9)	(9)	0	(9)	0	0
Issuance of common stock under employee stock purchase plan	7	7	0	7	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)			1
Stock-based compensation	23	23	0	23	0	0	0
Restricted stock vested and stock options exercised	2	2	0	2	0	0	0
Restricted stock vested and stock options exercised (in shares)			1
Common stock dividends	(57)	(57)	0	0	(57)	0	0
Ending balances at May. 04, 2013	3,548	2,916	34	77	2,723	82	632
Ending balances (in shares) at May. 04, 2013			340
Beginning balances at Feb. 01, 2014	3,989	3,986	35	300	3,159	492	3
Beginning balances (in shares) at Feb. 01, 2014			347
Increase (Decrease) in Shareholders' Equity
Net earnings (loss), three months ended	461	461	0	0	461	0	0
Foreign currency translation adjustments	3	3	0	0	0	3	0
Unrealized gain (loss) on available-for-sale investments	(1)	(1)	0	0	0	(1)	0
Tax deficit from stock options exercised, restricted stock vesting and employee stock purchase plan	(2)	(2)	0	(2)	0	0	0
Issuance of common stock under employee stock purchase plan	4	4	0	4	0	0	0
Issuance of common stock under employee stock purchase plan (in shares)			0
Stock-based compensation	23	23	0	23
Restricted stock vested and stock options exercised	5	5	0	5	0	0	0
Restricted stock vested and stock options exercised (in shares)			2
Common stock dividends	(58)	(58)	0	0	(58)	0	0
Ending balances at May. 03, 2014	$ 4,424	$ 4,421	$ 35	$ 330	$ 3,562	$ 494	$ 3
Ending balances (in shares) at May. 03, 2014			349