Accrued Liabilities and Deferred Revenue (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	$ 43,484	$ 45,369
Automotive [Member]
Liabilities, Current [Abstract]
Dealer and Customer Allowance and Claims	6,614	6,971
Deferred revenue	3,012	2,216
Employee benefit plans	1,529	1,552
Accrued interest	252	253
Other postretirement employee benefits	442	439
Pension	379	388
Other	2,832	3,184
Total Automotive accrued liabilities and deferred revenue	15,060	15,003
Liabilities, Noncurrent [Abstract]
Pension	12,741	15,091
OPEB	6,202	6,152
Dealer and Customer Allowances and Claims	2,368	2,453
Deferred revenue	1,942	1,739
Employee benefit plans	694	709
Other	826	766
Total Automotive other liabilities	24,773	26,910
Accrued liabilities and deferred revenue	39,833	41,913
Financial Services [Member]
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	3,651	3,457
Intersector [Member]
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	43,484	45,370
Intersector Eliminations [Member]
Liabilities, Noncurrent [Abstract]
Accrued liabilities and deferred revenue	$ 0	$ (1)