STOCK-BASED AWARDS - Stock Options Granted, Exercised and Outstanding (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Feb. 28, 2015	Feb. 22, 2014	Feb. 23, 2013	Feb. 25, 2012
Shares Under Option (In thousands)
Beginning Balance, Shares Under Option, Outstanding (shares)	23,335	22,246	18,413
Shares Under Option, Granted (shares)	5,022	10,083	9,370
Shares Under Option, Exercised (shares)	(1,944)	(3,121)	(9)
Shares Under Option, Canceled and forfeited (shares)	(5,533)	(5,873)	(5,528)
Ending Balance, Shares Under Option, Outstanding (shares)	20,880	23,335	22,246	18,413
Shares Under Option, Vested and expected to vest in the future (shares)	19,681
Shares Under Option, Exercisable (shares)	10,018
Weighted Average Exercise Price
Beginning Balance, Weighted Average Exercise Price , Outstanding (usd per share)	$ 14.87	$ 19.20	$ 28.90
Weighted Average Exercise Price, Granted (usd per share)	$ 7.54	$ 6.58	$ 2.54
Weighted Average Exercise Price, Exercised (usd per share)	$ 3.71	$ 2.29	$ 2.28
Weighted Average Exercise Price, Canceled and forfeited (usd per share)	$ 30.68	$ 23.70	$ 23.32
Ending Balance, Weighted Average Exercise Price ,Outstanding (usd per share)	$ 9.98	$ 14.87	$ 19.20	$ 28.90
Weighted Average Exercise Price, Vested and expected to vest in the future (usd per share)	$ 10.16
Weighted Average Exercise Price, Exercisable (usd per share)	$ 13.51
Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Term, Outstanding	6 years 6 months 18 days	5 years 4 months 28 days	4 years 7 months 17 days	2 years 7 months 13 days
Weighted Average Remaining Contractual Term, Vested and expected to vest in the future	6 years 4 months 28 days
Weighted Average Remaining Contractual Term, Exercisable	4 years 3 months 22 days
Aggregate Intrinsic Value, Outstanding	$ 61,073	$ 15,982	$ 10,402	$ 0
Aggregate Intrinsic Value, Vested and expected to vest in the future	57,694
Aggregate Intrinsic Value, Exercisable	$ 26,826