Derivative Instruments (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 23, 2013	Mar. 24, 2012	Dec. 29, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	$ 19	$ 24	$ 19	$ 34
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	2	(5)
Gains (losses) recognized into income	(1)	2
Payments for (Proceeds from) Hedge, Financing Activities	(1)	(7)
Gains (losses) reclassified from Accumulated OCI into income, net of tax	0
Net deferred loss within AOCI due to treasury locks and forward starting interest rate swaps that have been cash settled	11		12
FX Forwards, Forward Starting Interest Rate Swaps and T-Locks
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized into OCI, net of tax	1	(4)
Gains (losses) reclassified from Accumulated OCI into income, net of tax	0	(3)
Interest Rate Swaps | Fair value hedging | Interest expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized into income	$ 2	$ 4