Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Gross book value and accumulated amortization of intangible assets
Gross Book Value	$ 5,859	$ 5,862
Accumulated Amortization	1,054	980
Intangible Assets, Net (Excluding Goodwill), Total	4,805	4,882
Technology/Technical Know-How [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	1,876	1,875
Accumulated Amortization	374	341
Intangible Assets, Net (Excluding Goodwill), Total	1,502	1,534
Tradenames [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	1,668	1,677
Accumulated Amortization	138	131
Intangible Assets, Net (Excluding Goodwill), Total	1,530	1,546
Customer Relationships [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	1,961	1,954
Accumulated Amortization	236	209
Intangible Assets, Net (Excluding Goodwill), Total	1,725	1,745
Other [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	354	356
Accumulated Amortization	306	299
Intangible Assets, Net (Excluding Goodwill), Total	$ 48	$ 57