Other Income and Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Other Income and Loss [Abstract]
Total	$ 152	$ 40
Total	84	85
Automotive [Member]
Other Income and Loss [Abstract]
Interest Income	87	85
Realized and unrealized gains/(losses) on cash equivalents and marketable securities	26	(44)
Gains/(Losses) on the sale of held-for-sale operations, equity and cost investments, and other dispositions	(3)	25
Gains (Losses) on extinguishment of debt		(60)
Other Nonoperating Income Expense	42	34
Total	152	40
Financial Services [Member]
Other Income and Loss [Abstract]
Interest Income	16	24
Realized and unrealized gains/(losses) on cash equivalents and marketable securities	13	4
Gains/(Losses) on the sale of held-for-sale operations, equity and cost investments, and other dispositions	1
Gains (Losses) on extinguishment of debt	(3)	(8)
Investment and other income related to sales of receivables	1	0
Insurance premiums earned, net	26	23
Other Nonoperating Income Expense	30	42
Total	$ 84	$ 85