Pension and Other Postretirement Plans (Details 3)	12 Months Ended
	Nov. 30, 2013	Dec. 01, 2012
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Equity Securities [Member]
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities	50.00%
Defined Benefit Plan, Actual Plan Asset Allocations	51.00%	60.60%
Debt Securities [Member]
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities	50.00%
Defined Benefit Plan, Actual Plan Asset Allocations	48.70%	38.90%
Real estate funds [Member]
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Defined Benefit Plan, Actual Plan Asset Allocations	0.00%	0.00%
Cash and equivalents [Member]
Defined Benefit Plan, Assets, Target Allocations [Abstract]
Defined Benefit Plan, Actual Plan Asset Allocations	0.30%	0.50%