Impairment Charges for Financial Assets (Details 5) (USD $) In Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Income from financial investments, net, included in other, net, within other income (expense), net, and impairment charges for financial investments
Realized gains (losses) from:	$ 19	$ (3)	$ 69	$ (2)
Impairment charge for financial investments	0	0	0	(33)
Trimas Corporation Common Stock [Member]
Income from financial investments, net, included in other, net, within other income (expense), net, and impairment charges for financial investments
Realized gains (losses) from:	0	0	41	0
Private Equity Funds [Member]
Income from financial investments, net, included in other, net, within other income (expense), net, and impairment charges for financial investments
Realized gains (losses) from:	19	0	28	0
Impairment charge for financial investments	0	0	0	3
Asahi Tec Corporation - preferred stock [Member]
Income from financial investments, net, included in other, net, within other income (expense), net, and impairment charges for financial investments
Impairment charge for financial investments	0	0	0	28
Other private investments [Member]
Income from financial investments, net, included in other, net, within other income (expense), net, and impairment charges for financial investments
Realized gains (losses) from:	0	(3)	0	(2)
Impairment charge for financial investments	$ 0	$ 0	$ 0	$ 2	$ 0