Employee Benefit Plans (Tables)

6 Months Ended

Jul. 03, 2011

Employee Benefit Plans (Tables) [Abstract]

Components of net periodic benefit cost

	Three Months Ended						Six Months Ended
	July 3,			June 27,			July 3,			June 27,
	2011			2010			2011			2010
Retirement Plans
Service cost	$	5,014		$	5,466		$	10,117		$	10,704
Interest cost		17,522			17,913			35,355			35,147
Expected return on plan assets		(21,052	)		(19,608	)		(42,382	)		(38,457	)
Amortization of net transition obligation		118			111			237			216
Amortization of prior service cost		35			30			71			59
Amortization of net actuarial loss		5,828			8,679			11,769			17,011
Net periodic benefit cost	$	7,465		$	12,591		$	15,167		$	24,680
Retiree Health and Life Insurance Plans
Service cost	$	298		$	299		$	602		$	585
Interest cost		421			606			851			1,186
Expected return on plan assets		(350	)		(349	)		(707	)		(683	)
Amortization of prior service credit		(1,950	)		(2,583	)		(3,942	)		(5,052	)
Amortization of net actuarial loss		345			596			697			1,165
Net periodic benefit income	$	(1,236	)	$	(1,431	)	$	(2,499	)	$	(2,799	)