Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	May. 30, 2015	May. 31, 2014	Feb. 28, 2015
Numerator for income per share:
Income attributable to common stockholders-basic	$ 18,836	$ 41,446
Income attributable to common stockholders-diluted	$ 18,836	$ 41,446
Denominator:
Basic weighted average shares	986,691	963,332
Outstanding options and restricted shares, net (in shares)	22,461	33,222
Diluted weighted average shares	1,009,152	996,554
Basic income per share (in dollars per share)	$ 0.02	$ 0.04
Diluted income per share (in dollars per share)	$ 0.02	$ 0.04
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income per share		24,800
Convertible notes due 2015
Convertible notes amount	$ 64,089
Convertible notes
Antidilutive securities excluded from computation of earnings per share
Potential common shares excluded from the computation of diluted income per share		24,800
8.5% convertible notes due May 2015
Convertible notes due 2015
Convertible notes amount	$ 68,089
Debt instrument, stated interest rate (as a percent)	8.50%		8.50%
Convertible notes due 2015 were converted into common stock (in shares)	24,762