Employee Benefit Plans (Tables)

9 Months Ended

Sep. 27, 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						Nine months ended
	September 27, 2015			September 28, 2014			September 27, 2015			September 28, 2014
Pension and SERPA Benefits
Service cost	$	10,010		$	7,874		$	30,030		$	23,623
Interest cost	21,836			21,731			65,508			65,193
Expected return on plan assets	(36,232		)	(34,184		)	(108,696		)	(102,551		)
Amortization of unrecognized:
Prior service cost	109			279			327			838
Net loss	13,678			9,141			41,031			27,422
Net periodic benefit cost	$	9,401		$	4,841		$	28,200		$	14,525
Postretirement Healthcare Benefits
Service cost	$	2,065		$	1,754		$	6,195		$	5,262
Interest cost	3,541			4,220			10,623			12,659
Expected return on plan assets	(2,877		)	(2,607		)	(8,631		)	(7,822		)
Amortization of unrecognized:
Prior service credit	(804		)	(963		)	(2,412		)	(2,890		)
Net loss	993			1,182			2,979			3,546
Net periodic benefit cost	$	2,918		$	3,586		$	8,754		$	10,755