Earnings per Share (Tables)

6 Months Ended

Aug. 04, 2012

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following table presents a reconciliation of the numerators and denominators of basic and diluted earnings per share attributable to Best Buy Co., Inc. (shares in millions):

	Three Months Ended					Six Months Ended
	August 4, 2012			July 30, 2011		August 4, 2012		July 30, 2011
				(recast)				(recast)
Numerator
Net (loss) earnings from continuing operations	$	(7	)	$	148	$	154	$	441
Net loss (earnings) from continuing operations attributable to noncontrolling interests	19			2		19		(36		)
Net earnings from continuing operations attributable to Best Buy Co., Inc., basic	12			150		173		405
Adjustment for assumed dilution:
Interest on convertible debentures, net of tax	—			2		—		3
Net earnings from continuing operations attributable to Best Buy Co., Inc., diluted	$	12		$	152	$	173	$	408
Denominator
Weighted-average common shares outstanding	338.2			376.0		340.3		383.6
Effect of potentially dilutive securities:
Shares from assumed conversion of convertible debentures	—			8.8		—		8.8
Stock options and other	0.4			0.8		0.7		0.9
Weighted-average common shares outstanding, assuming dilution	338.6			385.6		341.0		393.3
Net earnings per share from continuing operations attributable to Best Buy Co., Inc.
Basic	$	0.04		$	0.40	$	0.51	$	1.06
Diluted	$	0.04		$	0.39	$	0.51	$	1.04