This element represents a certain statement of financial position asset caption which represents a class of assets, or which may include an individual asset, measured at fair value on a recurring basis.

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This element represents a certain statement of financial position liability caption which represents a class of liabilities, or which may include an individual liability, measured at fair value on a recurring basis.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The increases (decreases) in the market value of derivative instruments, including options, swaps, futures, and forward contracts, which were included in earnings in the period.

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Fair Value Measurements (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
Fair Value Measurements (Details) (USD $) In Thousands	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011 Fair Value, Inputs, Level 1 [Member]	Jan. 01, 2011 Fair Value, Inputs, Level 1 [Member]	Jul. 02, 2011 Fair Value, Inputs, Level 2 [Member]	Jan. 01, 2011 Fair Value, Inputs, Level 2 [Member]	Jul. 02, 2011 Fair Value, Inputs, Level 2 [Member]	Jan. 01, 2011 Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents measured at fair value on recurring basis					$ 930,193	$ 532,985
Marketable trading securities (included in other currents assets) measured at fair value on recurring basis					47,656	44,401
Derivative Assets measured at fair value on recurring basis							910	585
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Liabilities measured at fair value on recurring basis									16,024	25,758
Net unrealized gain (loss) due to change in fair value of derivative instruments	$ 7,711	$ 10,331	$ 10,059	$ 17,196