Summary Of Significant Accounting Policies (Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 30, 2012	Sep. 23, 2012	Jun. 24, 2012	Mar. 25, 2012	Jun. 30, 2013	Jun. 24, 2012	Sep. 29, 2013	Sep. 23, 2012	Dec. 29, 2013		Dec. 30, 2012	Dec. 25, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	$ (4,975)	$ 7,232	$ 897	$ (4,925)	$ (30,304)	$ (4,704)	$ (92,992)	$ (11,020)	$ (4,028)	$ (104,012)	$ 3,204	$ (108,716)	$ (1,771)		$ (139,020)	$ (82,396)
Tax benefit		(2,665)	(600)	0		(3,505)	(5,950)	10,755	(600)	4,805	(3,265)	1,300	(3,671)		(6,005)	(53,353)
Cost of revenues - foreign currency revenue forecast contracts		104,356	102,399	94,907		100,103	107,603	90,932	197,306	198,535	301,662	298,638	420,647		420,084	450,508
Other operating income			248	330		0	0	0	578	745	(578)	745	578		2,043	1,827
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net of tax													(1,219)
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Amortization of Pension Plan Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Actuarial loss													(1,567)	[1]
Prior service cost													(2)	[1]
Total before tax													(1,569)
Tax benefit													449
Net of tax													(1,120)
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Gains and Losses on Cash flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax													160
Tax benefit													(139)
Net of tax													21
Cost of revenues - foreign currency revenue forecast contracts													160
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Non-controlling Interests
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax													(120)
Tax benefit													0
Net of tax													(120)
Other operating income													$ (120)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension costs. Refer to Note 13 of the Annual Report.