Comprehensive Income and Capital Structure Accumulated Other Comprehensive Income Activity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 23, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), foreign currency translation adjustments, balance at year-end 2012	$ (32)
Accumulated other comprehensive income (loss), other derivative instrument adjustments, balance at year-end 2012	(19)
Accumulated other comprehensive income (loss), unrealized gains on available-for-sale securities, balance at year-end 2012	7
Accumulated other comprehensive income (loss), balance at year-end 2012	(44)
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments	(13)		11
Other comprehensive income (loss) before reclassifications, other derivative instrument adjustments	7	[1]	(3)
Other comprehensive income (loss) before reclassifications, unrealized gains on available-for-sale securities	4	[1]	2
Other comprehensive income (loss) before reclassifications, total	(2)
Amounts reclassified from accumulated other comprehensive loss, foreign currency translation adjustments	0
Amounts reclassified from accumulated other comprehensive loss, other derivative instrument adjustments	0
Amounts reclassified from accumulated other comprehensive loss, unrealized gains on available-for-sale securities	0
Amounts reclassified from accumulated other comprehensive loss, total	0
Net other comprehensive income (loss), foreign currency translation adjustments	(13)
Net other comprehensive income (loss), other derivative instrument adjustments	7
Net other comprehensive income (loss), unrealized gains on available-for-sale securities	4
Total other comprehensive (loss) income, net of tax	(2)		10
Accumulated other comprehensive income (loss), foreign currency translation adjustments, balance at March 31, 2013	(45)
Accumulated other comprehensive income (loss), other derivative instrument adjustments, balance at March 31, 2013	(12)
Accumulated other comprehensive income (loss), unrealized gains on available-for-sale securities, balance at March 31, 2013	11
Accumulated other comprehensive income (loss), balance at March 31, 2013	(46)
Other comprehensive income (loss) before reclassifications, other derivative instrument adjustments, deferred tax	1
Other comprehensive income (loss) before reclassifications, unrealized gains on available-for-sale securities, deferred tax	$ 3

[1] We present the portions of other comprehensive income (loss) before reclassifications that relate to other derivative instrument adjustments net of $1 million of deferred taxes and the portions that relate to unrealized gains on available-for-sale securities net of $3 million of deferred taxes.