Derivative Instruments (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 24, 2012	Mar. 19, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized into income	$ 2	$ 4
Net deferred loss within AOCI due to treasury locks and forward starting interest rate swaps that have been cash settled	13
Interest Rate Swaps \| Fair value hedging \| Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized into income	4	8
Foreign Currency Forwards
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized into OCI, net of tax	(4)	(6)
Gains (losses) reclassified from Accumulated OCI into income, net of tax	$ (3)	$ (6)

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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- Definition

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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