Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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Aggregate notional amount of all foreign currency derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of all interest rate derivatives designated as hedging instruments in fair value hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

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The net cash outflow or inflow from derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments.

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Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 24, 2012	Mar. 19, 2011	Mar. 24, 2012 Interest Rate Swaps	Mar. 24, 2012 Interest Rate Swaps Prepaid expenses and other current assets	Dec. 31, 2011 Interest Rate Swaps Prepaid expenses and other current assets	Mar. 24, 2012 Interest Rate Swaps Other assets	Dec. 31, 2011 Interest Rate Swaps Other assets	Mar. 24, 2012 Interest Rate Swaps Short-term borrowings	Dec. 31, 2011 Interest Rate Swaps Short-term borrowings	Mar. 24, 2012 Interest Rate Swaps Long-term debt	Dec. 31, 2011 Interest Rate Swaps Long-term debt	Mar. 24, 2012 Foreign Currency Forwards	Mar. 24, 2012 Foreign Currency Forwards Prepaid expenses and other current assets	Dec. 31, 2011 Foreign Currency Forwards Prepaid expenses and other current assets	Mar. 24, 2012 Foreign Currency Forwards Accounts payable and other current liabilities	Dec. 31, 2011 Foreign Currency Forwards Accounts payable and other current liabilities
Derivatives, Fair Value [Line Items]
Notional amount of interest rate derivative instruments outstanding			$ 550
Notional amount of foreign currency derivative instruments outstanding												547
Derivative assets				5	10	22	22						0	3
Derivative liability															(3)	(1)
Unrealized gains associated with interest rate swaps that hedge the interest rate risk for a portion of our debt and reported as an addition to debt								3	5	20	21
Derivative assets (liabilites) beg. balance, net	34	45
Gains (losses) recognized into OCI	(5)	(10)
Gains (losses) recognized into income	2	4
Cash settlements	(7)	(7)
Derivative assets (liabilites) ending balance, net	$ 24	$ 32