Loss Per Share (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Aug. 27, 2011	Aug. 28, 2010	Aug. 27, 2011	Aug. 28, 2010
Numerator for loss per share:
Net loss	$ (92,254)	$ (196,976)	$ (155,336)	$ (270,660)
Accretion of redeemable preferred stock	(26)	(26)	(51)	(51)
Cumulative preferred stock dividends	(2,461)	(2,318)	(4,886)	(4,603)
Loss attributable to common stockholders-basic	(94,741)	(199,320)	(160,273)	(275,314)
Loss attributable to common stockholders-diluted	$ (94,741)	$ (199,320)	$ (160,273)	$ (275,314)
Denominator:
Basic weighted average shares	885,621	882,758	884,768	882,245
Diluted weighted average shares	885,621	882,758	884,768	882,245
Basic and diluted loss per share (in dollars per share)	$ (0.11)	$ (0.23)	$ (0.18)	$ (0.31)
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted loss per share (in shares)	132,792	141,626	132,792	141,626
Stock options.
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted loss per share (in shares)	77,713	88,297	77,713	88,297
Convertible preferred stock
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted loss per share (in shares)	30,279	28,529	30,279	28,529
Convertible debt
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted loss per share (in shares)	24,800	24,800	24,800	24,800
Restricted stock
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted loss per share (in shares)			12,407	8,191

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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