Debt (Detail) (USD $) In Thousands, unless otherwise specified	Nov. 23, 2012	Feb. 29, 2012	Nov. 25, 2011
Debt Instrument [Line Items]
Long-term debt	$ 356,832	$ 225,181	$ 234,642
7.375% senior notes, due 2021 [Member]
Debt Instrument [Line Items]
Long-term debt	225,000	225,000
Credit Agreements [Member]
Debt Instrument [Line Items]
Long-term debt	131,651
7.375% senior notes, due 2016 [Member]
Debt Instrument [Line Items]
Long-term debt			213,864
7.375% notes, due 2016 [Member]
Debt Instrument [Line Items]
Long-term debt			20,597
6.10% senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 181	$ 181	$ 181