Goodwill and Other Intangible Assets Schedule of Other Intangible Assets by Major Class (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of other intangible assets
Intangible assets not subject to amortization (primarily trademarks)	$ 1,868	$ 1,865
Intangible assets subject to amortization
Historical cost	6,602	6,624
Accumulated amortization	1,284	909
Customer Relationships [Member]
Intangible assets subject to amortization
Historical cost	3,859	3,838
Accumulated amortization	669	428
Patents and Technology [Member]
Intangible assets subject to amortization
Historical cost	1,588	1,626
Accumulated amortization	389	325
Finite Lived Intangible Assets, Other [Member]
Intangible assets subject to amortization
Historical cost	1,155	1,160
Accumulated amortization	$ 226	$ 156