Pension and Other Postretirement Plans (Details 6) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Dec. 01, 2012	Dec. 03, 2011	Jan. 01, 2007
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
Defined Contribution Plan, Cost Recognized	$ 4,482	$ 4,377	$ 3,933
Pension Plans, Defined Benefit [Member]
Components of net periodic benefit cost (income):
Service cost	2,485	2,126	1,968
Interest cost	6,934	7,715	8,133
Expected return on plan assets	(10,795)	(9,181)	(7,674)
Settlement cost	3,087	0	1,368
Amortization of unrecognized:
Prior service cost	(9)	(10)	(395)
Net actuarial loss (gain)	5,471	8,323	5,110
Net periodic benefit cost (income)	7,173	8,973	8,510
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Expected return on assets	7.50%	7.50%	7.50%
Defined Benefit Plan Weighted Average Next Fiscal Year Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Net prior service cost (credit)	(12)	(21)
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Loss in Next Fiscal Year [Abstract]
Prior service cost (credit)	(10)
Actuarial loss (gain)	2,882
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Loss in Next Fiscal Year	2,872
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
2014	8,089
2015	8,441
2016	8,767
2017	9,212
2018	9,646
2019 - 2023	56,655
Pension Plans, Defined Benefit [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.50%	4.50%	5.25%
Rate of compensation increase	4.00%	4.00%	4.00%
Defined Benefit Plan Weighted Average Next Fiscal Year Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan Next Fiscal Year Assumptions For Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets	7.50%
Defined Benefit Plan Next Fiscal Year Assumptions For Calculating Net Periodic Benefit Cost Rate Of Compensation Increase	4.00%
Pension Plans, Defined Benefit [Member] | Qualified Pension Plans [Member] | Net Periodic Benefit Expense (Income) [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Measurement date	11/30/2012	11/30/2011	11/30/2010
Pension Plans, Defined Benefit [Member] | U.S. Combined Nonqualified Plans [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.25%	1.75%	2.75%
Rate of compensation increase	4.00%	4.00%	4.00%
Defined Benefit Plan Weighted Average Next Fiscal Year Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan, Next Fiscal Year Assumptions for Calculating Net Periodic Benefit Cost, Discount Rate	1.75%
Defined Benefit Plan Next Fiscal Year Assumptions For Calculating Net Periodic Benefit Cost Rate Of Compensation Increase	4.00%
Pension Plans, Defined Benefit [Member] | U.S. Combined Nonqualified Plans [Member] | Net Periodic Benefit Expense (Income) [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Measurement date	11/30/2013	11/30/2012	11/30/2011
Other Postretirement Benefit Plans, Defined Benefit [Member]
Components of net periodic benefit cost (income):
Service cost	0	0
Interest cost	9	17	23
Amortization of unrecognized:
Prior service cost	(122)	(122)	(122)
Net actuarial loss (gain)	(149)	(121)	(130)
Net periodic benefit cost (income)	(262)	(226)	(229)
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	2.25%	3.50%	3.75%
Defined Benefit Plan Weighted Average Next Fiscal Year Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan, Next Fiscal Year Assumptions for Calculating Net Periodic Benefit Cost, Discount Rate	3.00%
Net prior service cost (credit)	(595)	(718)		1,708
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Loss in Next Fiscal Year [Abstract]
Prior service cost (credit)	(123)
Actuarial loss (gain)	(149)
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Loss in Next Fiscal Year	(272)
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract]
2014	62
2015	57
2016	46
2017	38
2018	34
2019 - 2023	105
Other Postretirement Benefit Plans, Defined Benefit [Member] | Net Periodic Benefit Expense (Income) [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Measurement date	11/30/2012	11/30/2011	11/30/2010
Forecast [Member] | Pension Plans, Defined Benefit [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Weighted Average Next Fiscal Year Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan, Next Fiscal Year Assumptions for Calculating Net Periodic Benefit Cost, Discount Rate	4.50%
Defined Benefit Plan Effect on Next Fiscal Year Net Periodic Benefit Cost From Changes in Assumptions	(2,624)
Forecast [Member] | Pension Plans, Defined Benefit [Member] | U.S. Combined Nonqualified Plans [Member]
Defined Benefit Plan Weighted Average Next Fiscal Year Assumptions Used In Calculating Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan Effect on Next Fiscal Year Net Periodic Benefit Cost From Changes in Assumptions	$ 187