Other Income and Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Income and Loss [Abstract]
Total	$ (85)	$ 199	$ 67	$ 239
Total	82	53	166	138
Automotive [Member]
Other Income and Loss [Abstract]
Interest Income	65	105	152	190
Realized and unrealized gains/(losses) on cash equivalents and marketable securities	(21)	50	5	6
Gains/(Losses) on the sale of held-for-sale operations, equity and cost investments, and other dispositions	(183)	8	(186)	33
Gains/(Losses) on extinguishment of debt				(60)
Other	54	36	96	70
Total	(85)	199	67	239
Financial Services [Member]
Other Income and Loss [Abstract]
Interest Income	21	13	37	37
Realized and unrealized gains/(losses) on cash equivalents and marketable securities		21	13	25
Gains/(Losses) on the sale of held-for-sale operations, equity and cost investments, and other dispositions	(1)
Gains/(Losses) on extinguishment of debt	(6)	(28)	(9)	(36)
Investment and other income related to sales of receivables	0	0	1	0
Insurance premiums earned, net	25	23	51	46
Other	43	24	73	66
Total	$ 82	$ 53	$ 166	$ 138