Derivatives and Hedging Activities (Details 1) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Jan. 01, 2012
Other Non Current Assets [Member]
Designated cash flow hedges
Derivative assets designated as cash flow hedges	$ 0	$ 0
Derivative assets not designated as cash flow hedges	25	0
Total derivatives assets	25	0
Other Current Accrued Liabilities [Member]
Designated cash flow hedges
Derivative liabilities designated as cash flow hedges	59,341	3,265
Foreign exchange contracts not designated, liabilities	42,662	36,780
Total derivatives liabilities	102,003	40,045
Non-current liabilities [Member]
Designated cash flow hedges
Derivative liabilities designated as cash flow hedges	0	0
Foreign exchange contracts not designated, liabilities	1,039	5,790
Total derivatives liabilities	1,039	5,790
Other Current Assets [Member]
Designated cash flow hedges
Derivative assets designated as cash flow hedges	0	14,890
Derivative assets not designated as cash flow hedges	13,201	6,203
Total derivatives assets	13,201	21,093
Foreign exchange contracts [Member] | Other Non Current Assets [Member]
Designated cash flow hedges
Derivative assets designated as cash flow hedges	0	0
Foreign exchange contracts [Member] | Other Current Accrued Liabilities [Member]
Designated cash flow hedges
Derivative liabilities designated as cash flow hedges	59,341	3,265
Foreign exchange contracts [Member] | Non-current liabilities [Member]
Designated cash flow hedges
Derivative liabilities designated as cash flow hedges	0	0
Foreign exchange contracts [Member] | Other Current Assets [Member]
Designated cash flow hedges
Derivative assets designated as cash flow hedges	$ 0	$ 14,890