Derivatives and Hedging Activities (Details 1) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012	Jan. 01, 2012
Other Current Assets [Member]
Designated cash flow hedges, assets
Foreign exchange contracts, assets	$ 568	$ 14,890
Foreign exchange contracts not designated, assets	5,088	6,203
Total derivatives, assets	5,656	21,093
Other Non Current Assets [Member]
Designated cash flow hedges, assets
Foreign exchange contracts, assets	0	0
Foreign exchange contracts not designated, assets	3	0
Total derivatives, assets	3	0
Other Current Accrued Liabilities [Member]
Designated cash flow hedges, liabilities
Foreign exchange contracts, liabilities	14,071	3,265
Foreign exchange contracts not designated, liabilities	4,025	36,780
Total derivatives, liabilities	18,096	40,045
Non-current liabilities [Member]
Designated cash flow hedges, liabilities
Foreign exchange contracts, liabilities	0	0
Foreign exchange contracts not designated, liabilities	1,745	5,790
Total derivatives, liabilities	1,745	5,790
Foreign exchange contracts [Member] | Other Current Assets [Member]
Designated cash flow hedges, assets
Foreign exchange contracts, assets	568	14,890
Foreign exchange contracts [Member] | Other Non Current Assets [Member]
Designated cash flow hedges, assets
Foreign exchange contracts, assets	0	0
Foreign exchange contracts [Member] | Other Current Accrued Liabilities [Member]
Designated cash flow hedges, liabilities
Foreign exchange contracts, liabilities	14,071	3,265
Foreign exchange contracts [Member] | Non-current liabilities [Member]
Designated cash flow hedges, liabilities
Foreign exchange contracts, liabilities	$ 0	$ 0