Impairment Charges for Financial Assets (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Schedule of Investments [Line Items]
Realized Gains From Marketable Securities	$ 41	$ 10
Realized Losses From Marketable Securities		(8)
Income from financial investments, net	73	9	3
Asset Impairment Charges
Asset Impairment Charges	0	(34)	(10)
TriMas Corporation [Member]
Asset Impairment Charges
Asset Impairment Charges	0	0	0
Private Equity Funds [Member]
Asset Impairment Charges
Asset Impairment Charges		(4)	(10)
Asahi Tec [Member]
Asset Impairment Charges
Asset Impairment Charges		(28)
Other private investments [Member]
Asset Impairment Charges
Asset Impairment Charges		(2)
Marketable Securities [Member]
Schedule of Investments [Line Items]
Dividend income	0	0	0
Asset Impairment Charges
Asset Impairment Charges	0	0	0
Other Investment [Member]
Schedule of Investments [Line Items]
Dividend income	0	0	0
Income from other investments, net	32	7	3
Asset Impairment Charges
Asset Impairment Charges		$ 2