Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	$ 15,043	$ 18,687	$ 41,501	$ 50,968
Accumulated Other Comprehensive Income
Beginning Balance			(10,222)
Other comprehensive income before reclassifications			11,475
Tax effect			(389)
Other comprehensive income before reclassifications, net of tax			11,086
Amounts reclassified out of AOCI			12,400
Tax effect			(4,086)
Amounts reclassified out of AOCI, net of tax			8,314
Net comprehensive income	28,113	31,376	19,400	10,371
Ending Balance	9,178		9,178
Unrealized Gain (Loss) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income
Beginning Balance			1,273
Other comprehensive income before reclassifications			1,171
Tax effect			(389)
Other comprehensive income before reclassifications, net of tax			782
Amounts reclassified out of AOCI			(1,408)
Tax effect			472
Amounts reclassified out of AOCI, net of tax			(936)
Net comprehensive income			(154)
Ending Balance	1,119		1,119
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income
Beginning Balance			167,461
Other comprehensive income before reclassifications			10,304
Tax effect			0
Other comprehensive income before reclassifications, net of tax			10,304
Amounts reclassified out of AOCI			0
Tax effect			0
Amounts reclassified out of AOCI, net of tax			0
Net comprehensive income			10,304
Ending Balance	177,765		177,765
Pension and Other Post-Retirement Actuarial Items [Member]
Accumulated Other Comprehensive Income
Beginning Balance			(178,956)
Other comprehensive income before reclassifications			0
Tax effect			0
Other comprehensive income before reclassifications, net of tax			0
Amounts reclassified out of AOCI			13,808
Tax effect			(4,558)
Amounts reclassified out of AOCI, net of tax			9,250
Net comprehensive income			9,250
Ending Balance	(169,706)		(169,706)
Rabbi Trust Assets [Member] | Unrealized Gain (Loss) on Available-for-Sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Component of Selling, General, and Administrative Expense	624		1,355
Other AFS Securities [Member] | Unrealized Gain (Loss) on Available-for-Sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Component of Other Income	$ 97		$ 53