Goodwill and Other Identifiable Intangible Assets (Additional Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying amount of acquired trademarks with indefinite lives	$ 494		$ 494	$ 499
Aggregate amortization expense of identifiable intangible assets	32	28	93		88
Estimated future amortization of identifiable intangible assets for remainder of 2013				33
Estimated future amortization of identifiable intangible assets in 2014	125		125
Estimated future amortization of identifiable intangible assets in 2015	105		105
Estimated future amortization of identifiable intangible assets in 2016	$ 95		$ 95