Accrued Liabilities and Deferred Revenue (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	$ 44,004	$ 45,369
Automotive [Member]
Liabilities, Current [Abstract]
Dealer and Customer Allowance and Claims	6,690	6,971
Deferred revenue	3,220	2,216
Employee benefit plans	1,508	1,552
Accrued interest	273	253
Other postretirement employee benefits	439	439
Pension	371	388
Other	2,710	3,184
Total Automotive accrued liabilities and deferred revenue	15,211	15,003
Liabilities, Noncurrent [Abstract]
Pension	13,285	15,091
OPEB	6,132	6,152
Dealer and Customer Allowances and Claims	2,517	2,453
Deferred revenue	1,864	1,739
Employee benefit plans	637	709
Other	885	766
Total Automotive other liabilities	25,320	26,910
Accrued liabilities and deferred revenue	40,531	41,913
Financial Services [Member]
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	3,473	3,457
Intersector [Member]
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	44,004	45,370
Intersector Eliminations [Member]
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	$ 0	$ (1)