Goodwill and Other Identifiable Intangible Assets (Additional Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Year Four	$ 90
Carrying amount of acquired trademarks with indefinite lives	498		499
Aggregate amortization expense of identifiable intangible assets	30	26
Estimated future amortization of identifiable intangible assets for remainder of 2013	90
Estimated future amortization of identifiable intangible assets in 2014	120
Estimated future amortization of identifiable intangible assets in 2015	100
Estimated future amortization of identifiable intangible assets in 2016	90
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 90