Other Income and Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Other Income and Loss [Abstract]
Total	$ 320	$ 98	$ 387	$ 337
Total	96	176	262	314
Automotive [Member]
Other Income and Loss [Abstract]
Interest Income	68	101	220	291
Realized and unrealized gains/(losses) on cash equivalents and marketable securities	23	(41)	28	(35)
Gains/(Losses) on the sale of held-for-sale operations, equity and cost investments, business combinations, and other dispositions	154	1	(32)	34
Gains/(Losses) on extinguishment of debt				(60)
Other	75	37	171	107
Total	320	98	387	337
Financial Services [Member]
Other Income and Loss [Abstract]
Interest Income	17	29	54	66
Realized and unrealized gains/(losses) on cash equivalents and marketable securities	4	(4)	17	21
Gains/(Losses) on the sale of held-for-sale operations, equity and cost investments, business combinations, and other dispositions	1	(9)	1	(9)
Gains/(Losses) on extinguishment of debt	(3)	(31)	(12)	(67)
Investment and other income related to sales of receivables	0	1	1	1
Insurance premiums earned, net	24	31	75	77
Other	53	159	126	225
Total	$ 96	$ 176	$ 262	$ 314