Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 30, 2013
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 6 – Fair Value Measurements Our assets and liabilities carried at fair value are classified and disclosed in one of the following three categories: Level 1 – quoted market prices in active markets for identical assets and liabilities; Level 2 – observable market-based inputs or unobservable inputs that are corroborated by market data; and Level 3 – unobservable inputs that are not corroborated by market data. At March 30, 2013 and December 29, 2012, our assets and liabilities measured at fair value on a recurring basis included cash equivalents, consisting primarily of money market accounts and short-term certificates of deposit, of $12,403 and $189,381, respectively, and marketable trading securities (included in other currents assets in our consolidated balance sheet) of $49,542 and $46,938, respectively, both determined based on Level 1 criteria, as defined above, and derivative assets of $8,212 and $2,897, respectively, and derivative liabilities of $4,863 and $3,776, respectively, determined based on Level 2 criteria. The change in the fair value of all derivative instruments was a net unrealized gain (loss) of $4,228 and $(8,593) for the thirteen weeks ended March 30, 2013 and March 31, 2012, respectively. The fair value of the cash equivalents approximated cost and the gain or loss on the marketable trading securities was recognized in the consolidated statement of income to reflect these investments at fair value. Our senior unsecured notes due in 2022 and 2017 are stated at amortized cost, and their respective fair value were determined based on Level 2 criteria above. Our senior unsecured notes due in August 2022 had a fair value of approximately $324,000 and $307,000 at March 30, 2013 and December 29, 2012, respectively, while our senior unsecured notes due in August 2017 had a fair value of approximately $318,000 and $326,000 at March 30, 2013 and December 29, 2012, respectively (see Note 9).

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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