Employee Benefit Plans (Tables)

6 Months Ended

Jun. 28, 2015

Compensation and Retirement Disclosure [Abstract]

Components Of Net Periodic Benefit Costs

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

	Three months ended						Six months ended
	June 28, 2015			June 29, 2014			June 28, 2015			June 29, 2014
Pension and SERPA Benefits
Service cost	$	10,010		$	7,874		$	20,020		$	15,748
Interest cost	21,836			21,731			43,672			43,462
Expected return on plan assets	(36,232		)	(34,184		)	(72,465		)	(68,368		)
Amortization of unrecognized:
Prior service cost	109			279			218			558
Net loss	13,677			9,141			27,354			18,281
Net periodic benefit cost	$	9,400		$	4,841		$	18,799		$	9,681
Postretirement Healthcare Benefits
Service cost	$	2,065		$	1,754		$	4,130		$	3,508
Interest cost	3,541			4,220			7,082			8,439
Expected return on plan assets	(2,877		)	(2,607		)	(5,754		)	(5,215		)
Amortization of unrecognized:
Prior service credit	(804		)	(963		)	(1,608		)	(1,927		)
Net loss	993			1,182			1,986			2,364
Net periodic benefit cost	$	2,918		$	3,586		$	5,836		$	7,169