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