Debt Textuals (Details) (USD $)	3 Months Ended		6 Months Ended						3 Months Ended
	May 26, 2013	May 27, 2012	May 26, 2013	May 27, 2012	Nov. 25, 2012	May 26, 2013 Senior revolving credit facility [Member]	May 26, 2013 Unsecured debt [Member]	Nov. 25, 2012 Unsecured debt [Member]	May 26, 2013 Senior notes [Member] 6.875% senior notes due 2022 [Member]	Mar. 14, 2013 Senior notes [Member] 6.875% senior notes due 2022 [Member]	Nov. 25, 2012 Senior notes [Member] 6.875% senior notes due 2022 [Member]
Debt Instruments [Line Items]
Short-term debt	$ 54,370,000		$ 54,370,000		$ 59,759,000
Debt instrument, face amount										140,000,000
Stated interest rate									6.875%
Debt Instrument, Unamortized Premium										11,200,000
Long-term debt	1,488,060,000		1,488,060,000		1,669,452,000		1,488,060,000	1,669,452,000	535,858,000		385,000,000
Debt issuance costs									2,600,000
Loss on early extinguishment of debt	(575,000)	(8,206,000)	(689,000)	(8,206,000)
Unused availability						558,900,000
Total availability						627,500,000
Letters of credit and other credit usage						$ (68,600,000)
Weighted-average interest rate	7.70%	7.17%	7.29%	7.08%