Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Components Of Net Periodic Benefit Costs

ents of net periodic benefit costs were as follows (in thousands):

	Three months ended						Nine months ended
	September 30, 2012			September 25, 2011			September 30, 2012			September 25, 2011
Pension and SERPA Benefits
Service cost	$	8,420		$	9,274		$	25,260		$	27,819
Interest cost	20,816			20,147			62,448			60,441
Expected return on plan assets	(29,277		)	(26,652		)	(87,832		)	(79,959		)
Amortization of unrecognized:
Prior service cost	740			746			2,219			2,235
Net loss	10,969			7,550			32,906			22,659
Curtailment loss	—			—			—			236
Net periodic benefit cost	$	11,668		$	11,065		$	35,001		$	33,431
Postretirement Healthcare Benefits
Service cost	$	1,854		$	1,907		$	5,560		$	5,721
Interest cost	4,578			4,911			13,733			14,733
Expected return on plan assets	(2,356		)	(2,346		)	(7,068		)	(7,038		)
Amortization of unrecognized:
Prior service credit	(963		)	(969		)	(2,890		)	(2,907		)
Net loss	1,855			1,798			5,566			5,394
Net periodic benefit cost	$	4,968		$	5,301		$	14,901		$	15,903

Durin