Deferred Costs (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 24, 2012	Feb. 29, 2012	Aug. 26, 2011
Deferred Costs and Future Payment Commitment for Retail Supply Agreements [Line Items]
Prepaid expenses and other	$ 79,145	$ 94,071	$ 75,016
Other assets	358,337	395,397	316,099
Deferred cost assets	437,482	489,468	391,115
Other current liabilities	(44,126)	(45,891)	(63,846)
Other liabilities	(127,857)	(137,360)	(68,323)
Deferred cost liabilities	(171,983)	(183,251)	(132,169)
Net deferred costs	$ 265,499	$ 306,217	$ 258,946