Employee Benefit Plans (Tables)

9 Months Ended

Aug. 26, 2012

Compensation and Retirement Disclosure [Abstract]

Schedule of defined benefit plans disclosures

The following table summarizes the components of net periodic benefit cost (income) and the changes recognized in “Accumulated other comprehensive loss” for the Company’s defined benefit pension plans and postretirement benefit plans:

	Pension Benefits						Postretirement Benefits
	Three Months Ended						Three Months Ended
	August 26, 2012			August 28, 2011			August 26, 2012			August 28, 2011
	(Dollars in thousands)
Net periodic benefit cost (income):
Service cost	$	2,215		$	2,552		$	99		$	119
Interest cost	14,364			15,123			1,658			1,908
Expected return on plan assets	(12,901		)	(13,535		)	—			—
Amortization of prior service benefit	(20		)	(20		)	(4,089		)	(7,236		)
Amortization of actuarial loss	3,154			1,939			1,290			1,256
Curtailment gain	(735		)	(1,426		)	—			—
Net settlement loss	—			20			—			—
Net periodic benefit cost (income)	6,077			4,653			(1,042		)	(3,953		)
Changes in accumulated other comprehensive loss:
Actuarial (gain) loss	(451		)	105			—			—
Amortization of prior service benefit	20			20			4,089			7,236
Amortization of actuarial loss	(3,154		)	(1,939		)	(1,290		)	(1,256		)
Curtailment gain (loss)	192			(7		)	—			—
Net settlement gain (loss)	18			(9		)	—			—
Total recognized in accumulated other comprehensive loss	(3,375		)	(1,830		)	2,799			5,980
Total recognized in net periodic benefit cost (income) and accumulated other comprehensive loss	$	2,702		$	2,823		$	1,757		$	2,027

	Pension Benefits						Postretirement Benefits
	Nine Months Ended						Nine Months Ended
	August 26, 2012			August 28, 2011			August 26, 2012			August 28, 2011
	(Dollars in thousands)
Net periodic benefit cost (income):
Service cost	$	6,709		$	7,739		$	298		$	358
Interest cost	43,212			45,277			4,975			5,722
Expected return on plan assets	(39,018		)	(39,490		)	—			—
Amortization of prior service (benefit) cost	(61		)	65			(12,267		)	(21,709		)
Amortization of actuarial loss	9,457			12,973			3,868			3,769
Curtailment (gain) loss	(1,730		)	1,629			—			—
Net settlement loss	417			736			—			—
Net periodic benefit cost (income)	18,986			28,929			(3,126		)	(11,860		)
Changes in accumulated other comprehensive loss:
Actuarial gain	(381		)	(32,310		)	—			—
Amortization of prior service benefit (cost)	61			(65		)	12,267			21,709
Amortization of actuarial loss	(9,457		)	(12,973		)	(3,868		)	(3,769		)
Curtailment gain (loss)	191			(3,078		)	—			—
Net settlement loss	(178		)	(347		)	—			—
Total recognized in accumulated other comprehensive loss	(9,764		)	(48,773		)	8,399			17,940
Total recognized in net periodic benefit cost (income) and accumulated other comprehensive loss	$	9,222		$	(19,844	)	$	5,273		$	6,080