intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 4,603	$ 4,319	$ 4,148
Other intangible assets	801	656
Intangible assets subject to amortization	695	554
Intangible assets not subject to amortization	106	102
Amortization expense related to other intangible assets	$ 95	$ 51	$ 29