Retirement Plans (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Retirement Plans [Abstract]
Estimated total employer contributions to defined benefit plans in current fiscal year, lower range			$ 8,000,000
Estimated total employer contributions to defined benefit plans in current fiscal year, higher range			10,000,000
U.S. Pension Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost		3,000		7,000
Interest cost	1,290,000	1,452,000	4,128,000	4,355,000
Expected return on plan assets	(1,951,000)	(1,905,000)	(6,027,000)	(5,714,000)
Net amortization: Net actuarial loss	812,000	752,000	2,574,000	2,256,000
Net periodic pension cost	151,000	302,000	675,000	904,000
Defined benefit plan, contributions by employer			4,000,000
U.S. Retiree Healthcare Plan
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	238,000	182,000	714,000	545,000
Interest cost	85,000	90,000	255,000	271,000
Expected return on plan assets	(88,000)	(66,000)	(264,000)	(197,000)
Net amortization: Prior service credit	(13,000)	(13,000)	(39,000)	(40,000)
Net periodic pension cost	222,000	193,000	666,000	579,000
Non-U.S. Pension Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	1,152,000	948,000	3,456,000	2,842,000
Interest cost	499,000	499,000	1,497,000	1,497,000
Expected return on plan assets	(228,000)	(209,000)	(684,000)	(627,000)
Net amortization: Prior service credit	(62,000)	(69,000)	(186,000)	(206,000)
Net amortization: Net actuarial loss	131,000	93,000	393,000	278,000
Net periodic pension cost	$ 1,492,000	$ 1,262,000	$ 4,476,000	$ 3,784,000