Pension and Other Postretirement Plans (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 02, 2013	Mar. 03, 2012
Defined Benefit Plan Disclosure [Line Items]
Cash contributions	$ 14,960
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash contributions	14,942	13,353
Components of net periodic benefit cost (income):
Service cost	622	530
Interest cost	1,730	1,979
Expected return on plan assets	(2,699)	(2,103)
Amortization of unrecognized:
Prior service cost	(3)	(3)
Net actuarial loss (gain)	1,516	1,909
Net periodic benefit cost (income)	1,166	2,312
Postretirement Healthcare Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash contributions	18	25
Components of net periodic benefit cost (income):
Interest cost	2	4
Amortization of unrecognized:
Prior service cost	(31)	(31)
Net actuarial loss (gain)	(37)	(30)
Net periodic benefit cost (income)	$ (66)	$ (57)