Net Earnings (Loss) Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Feb. 25, 2012	Feb. 26, 2011	Feb. 27, 2010
Net earnings (loss) per share-basic:
Net earnings (loss)	$ (1,040)	$ (1,510)	$ 393
Deduct: undistributed net earnings allocable to contingently convertible debentures
Net earnings (loss) available to common stockholders	(1,040)	(1,510)	393
Weighted average shares outstanding - basic	212	212	212
Net earnings (loss) per share - basic	$ (4.91)	$ (7.13)	$ 1.86
Net earnings (loss) per share - diluted:
Net earnings (loss)	(1,040)	(1,510)	393
Interest related to dilutive contingently convertible debentures, net of tax			1
Net earnings (loss) used for diluted net earnings per share calculation	$ (1,040)	$ (1,510)	$ 394
Weighted average shares outstanding - basic	212	212	212
Dilutive impact of options and restricted stock outstanding			1
Dilutive impact of convertible securities
Weighted average shares outstanding - diluted	212	212	213
Net earnings (loss) per share - diluted	$ (4.91)	$ (7.13)	$ 1.85
Options and Restricted Stock [Member]
Net Earnings (Loss) Per Share (Textual) [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share	21	24	22