Summary of Significant Accounting Policies (Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 23, 2012	Sep. 29, 2013		Sep. 23, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of revenues - foreign currency revenue forecast contracts	$ 104,210	$ 100,153	$ 301,503		$ 298,406
Other operating income	0	0	578		0
Total before tax	7,724	(4,280)	5,252		(107,011)
Tax benefit	(2,832)	(3,648)	(3,895)		924
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net of tax			(923)
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Amortization of Pension Plan Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Actuarial loss			(1,165)	[1]
Prior service cost			(2)
Total before tax			(1,167)
Tax benefit			343
Net of tax			(824)
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Gains and Losses on Cash flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of revenues - foreign currency revenue forecast contracts			160
Total before tax			160
Tax benefit			(139)
Net of tax			21
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Non-Controlling Interests [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other operating income			(120)
Total before tax			(120)
Tax benefit			0
Net of tax			$ (120)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension costs. Refer to Note 9 of the Consolidated Financial Statements.