Goodwill and Other Intangible Assets Schedule of other intangible assets by asset class (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Intangible assets with finite lives, gross carrying amount	$ 4,323		$ 4,358
Intangible assets with finite lives, accumulated amortization	1,745		1,383
Intangible assets, net	2,578		2,975
Amortization expense on intangible assets	395		423		362
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets with finite lives, gross carrying amount	1,019		1,025
Intangible assets with finite lives, accumulated amortization	0		0
Intangible assets, net	1,019		1,025
Customer related and contract based [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets with finite lives, gross carrying amount	2,720		2,714
Intangible assets with finite lives, accumulated amortization	1,310		969
Intangible assets, net	1,410		1,745
Marketing, technology and other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets with finite lives, gross carrying amount	584	[1]	619	[1]
Intangible assets with finite lives, accumulated amortization	435	[1]	414	[1]
Intangible assets, net	$ 149	[1]	$ 205	[1]

[1] Tradenames with finite lives disclosed separately in prior years are now presented in Marketing, technology, and other.