Pension and Other Postretirement Plans (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 03, 2011	Nov. 27, 2010	Nov. 28, 2009	Jan. 01, 2007
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	$ 100,866
Fair value of plan assets at end of year	112,548	100,866
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Long-term pension and postretirement healthcare benefits liabilities	(74,524)	(66,124)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Accumulated other comprehensive loss, after-tax	44,656	37,042	39,212
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(7,614)	2,170	(20,766)
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	168,644	163,069
Currency translation	(14)	(374)
Service cost	1,968	2,119	1,799
Interest cost	8,133	8,108	9,275
Plan participants' contributions	41	39
Plan amendments	0	(1,124)
Actuarial losses (gains)	16,562	6,309
Benefits paid	(8,493)	(9,502)
Retiree contributions	0	0
Benefit obligation at end of year	186,841	168,644	163,069
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	100,866	95,604
Currency translation	(13)	(313)
Actual return on plan assets	5,771	11,516
Employer contributions	14,376	3,522
Plan participants' contributions	41	39
Benefits paid	(8,493)	(9,502)
Fair value of plan assets at end of year	112,548	100,866	95,604
Funded status	(74,293)	(67,778)
Accumulated benefit obligation at end of year	178,959	161,298
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Accounts payable and accrued liabilities	(219)	(2,194)
Long-term pension and postretirement healthcare benefits liabilities	(74,074)	(65,584)
Funded status	(74,293)	(67,778)
Accumulated other comprehensive loss, pre-tax	72,687	60,306
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net actuarial loss (gain)	72,717	60,731
Net prior service cost (credit)	(30)	(425)
Accumulated other comprehensive loss, pre-tax	72,687	60,306
Deferred taxes	(26,830)	(21,924)
Accumulated other comprehensive loss, after-tax	45,857	38,382
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Amortization of unrecognized prior service (cost) credit, net of tax	246	250
Amortization of unrecognized actuarial (losses) gains, net of tax	(4,075)	(3,175)
Current year actuarial losses (gains), net of tax	11,639	1,126
Plan amendments, net of tax	0	(703)
Effect of change in deferred tax rate	(335)	287
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	7,475	(2,215)
Defined Benefit Plan, Tax Amounts [Abstract]
Amortization of prior service (cost) credit, tax amount	(149)	(147)
Amortization of actuarial (losses) gains, tax amount	2,403	1,831
Current year actuarial losses (gains), tax amount	(6,825)	(716)
Plan amendments, tax amount	0	421
Pension Plans, Defined Benefit [Member] | Change in Plan Obligation and Assets [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Defined Benefit Plan, Measurement Date	11/30/2011	11/30/2010
Pension Plans, Defined Benefit [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.50%	5.25%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	4.00%	4.00%
Pension Plans, Defined Benefit [Member] | U.S. Combined Nonqualified Plans [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	2.75%	2.25%
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase	4.00%	4.00%
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	663	843
Currency translation	0	0
Service cost	0	0
Interest cost	23	32	61
Plan participants' contributions	0	0
Plan amendments	0	0
Actuarial losses (gains)	(24)	(177)
Benefits paid	(483)	(500)
Retiree contributions	371	465
Benefit obligation at end of year	550	663	843
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	0	0
Currency translation	0	0
Actual return on plan assets	0	0
Employer contributions	483	500
Plan participants' contributions	0	0
Benefits paid	(483)	(500)
Fair value of plan assets at end of year	0	0	0
Funded status	(550)	(663)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Accounts payable and accrued liabilities	(100)	(123)
Long-term pension and postretirement healthcare benefits liabilities	(450)	(540)
Funded status	(550)	(663)
Accumulated other comprehensive loss, pre-tax	(1,887)	(2,115)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Net actuarial loss (gain)	(1,047)	(1,153)
Net prior service cost (credit)	(840)	(962)		1,708
Accumulated other comprehensive loss, pre-tax	(1,887)	(2,115)
Deferred taxes	686	775
Accumulated other comprehensive loss, after-tax	(1,201)	(1,340)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Amortization of unrecognized prior service (cost) credit, net of tax	77	78
Amortization of unrecognized actuarial (losses) gains, net of tax	83	82
Current year actuarial losses (gains), net of tax	(15)	(113)
Plan amendments, net of tax	0	0
Effect of change in deferred tax rate	(6)	(2)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	139	45
Defined Benefit Plan, Tax Amounts [Abstract]
Amortization of prior service (cost) credit, tax amount	(45)	(45)
Amortization of actuarial (losses) gains, tax amount	(47)	(47)
Current year actuarial losses (gains), tax amount	9	65
Plan amendments, tax amount	0	0
Other Postretirement Benefit Plans, Defined Benefit [Member] | Change in Plan Obligation and Assets [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Defined Benefit Plan, Measurement Date	11/30/2011	11/30/2010
Other Postretirement Benefit Plans, Defined Benefit [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.50%	3.75%
Unfunded Pension Benefit Obligation [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at end of year	$ 22,022	$ 20,900