Intangible Assets (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Gross book value and accumulated amortization of intangible assets
Gross Book Value	$ 5,826	$ 5,865
Accumulated Amortization	830	703
Net Book Value	4,996	5,162
Technology/Technical Know-How [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	1,838	1,846
Accumulated Amortization	273	215
Net Book Value	1,565	1,631
Tradename [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	1,677	1,678
Accumulated Amortization	96	61
Net Book Value	1,581	1,617
Customer Relationships [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	1,953	1,963
Accumulated Amortization	165	129
Net Book Value	1,788	1,834
Other [Member]
Gross book value and accumulated amortization of intangible assets
Gross Book Value	358	378
Accumulated Amortization	296	298
Net Book Value	$ 62	$ 80