Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Mar. 01, 2014	Nov. 30, 2013	Aug. 31, 2013	Jun. 01, 2013	Mar. 02, 2013	Dec. 01, 2012	Sep. 01, 2012	Jun. 02, 2012	Mar. 01, 2014	Mar. 02, 2013	Mar. 03, 2012
Numerator for income (loss) per share:
Net income (loss)		$ 55,377	$ 71,548	$ 32,827	$ 89,662	$ 123,087	$ 61,871	$ (38,765)	$ (28,088)	$ 249,414	$ 118,105	$ (368,571)
Accretion of redeemable preferred stock										(77)	(102)	(102)
Cumulative preferred stock dividends										(8,318)	(10,528)	(9,919)
Conversion of Series G and H preferred stock	(25,603)									(25,603)
Income (loss) attributable to common stockholders-basic										215,416	107,475	(378,592)
Add back-interest on convertible notes										5,456
Income (loss) attributable to common stockholders-diluted										$ 220,872	$ 107,475	$ (378,592)
Denominator:
Basic weighted average shares										922,199	889,562	885,819
Outstanding options and restricted shares, net (in shares)										32,093	17,697
Convertible notes (in shares)										24,800
Diluted weighted average shares										979,092	907,259	885,819
Basic income (loss) per share (in dollars per share)		$ 0.06	$ 0.05	$ 0.03	$ 0.10	$ 0.14	$ 0.07	$ (0.05)	$ (0.03)	$ 0.23	$ 0.12	$ (0.43)
Diluted income (loss) per share (in dollars per share)		$ 0.06	$ 0.04	$ 0.03	$ 0.09	$ 0.13	$ 0.07	$ (0.05)	$ (0.03)	$ 0.23	$ 0.12	$ (0.43)
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share										4,044	68,364	129,793
Stock options
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share										4,044	10,455	73,798
Convertible preferred stock
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share											33,109	31,195
Convertible notes
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share											24,800	24,800
Restricted shares and restricted stock units
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income (loss) per share										0	11,506