Income Taxes (Schedule Of Reconciliation Of Unrecognized Tax Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Income Taxes [Line Items]
Unrecognized tax Benefits, Ending Balance	$ 15,733	$ 17,830
Federal, State And Foreign Tax [Member]
Income Taxes [Line Items]
Unrecognized tax Benefits, Beginning Balance	25,473	38,262	35,928
Additions for tax positions related to the current year	7,438	4,091	3,495
Additions for tax positions related to prior year	706	4,600	699
Other reductions for tax positions related to prior years	(7,508)	(21,453)	(2,464)
Foreign exchange	(125)	(27)	604
Unrecognized tax Benefits, Ending Balance	25,984	25,473	38,262
Total unrecognized tax benefits that, if recognized, would impact the effective tax rate	25,984	25,473	38,262
Accrued Interest And Penalties [Member]
Income Taxes [Line Items]
Unrecognized tax Benefits, Beginning Balance	2,640	5,035	4,400
Additions for tax positions related to the current year	1,877	1,372	871
Additions for tax positions related to prior year	62		41
Other reductions for tax positions related to prior years	(1,831)	(3,767)	(277)
Foreign exchange	(14)
Unrecognized tax Benefits, Ending Balance	2,734	2,640	5,035
Total unrecognized tax benefits that, if recognized, would impact the effective tax rate	2,734	2,640	5,035
Unrecognized Income Tax Benefits [Member]
Income Taxes [Line Items]
Unrecognized tax Benefits, Beginning Balance	28,113	43,297	40,328
Additions for tax positions related to the current year	9,315	5,463	4,366
Additions for tax positions related to prior year	768	4,600	740
Other reductions for tax positions related to prior years	(9,339)	(25,220)	(2,741)
Foreign exchange	(139)	(27)	604
Unrecognized tax Benefits, Ending Balance	28,718	28,113	43,297
Total unrecognized tax benefits that, if recognized, would impact the effective tax rate	$ 28,718	$ 28,113	$ 43,297