Other Liabilities and Deferred Revenue (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Liabilities, Noncurrent [Abstract]
Other liabilities and deferred revenue	$ 40,141	$ 40,886
Automotive [Member]
Liabilities, Current [Abstract]
Dealer and dealers' customer allowances and claims	7,986	7,730
Deferred revenue	2,592	2,817
Employee benefit plans	1,719	1,706
Accrued interest	194	262
Other postretirement employee benefits	384	387
Pension	353	327
Other	3,210	3,308
Total Automotive other liabilities and deferred revenue	16,438	16,537
Liabilities, Noncurrent [Abstract]
Pension	8,847	9,288
OPEB	5,435	5,502
Dealer and dealers' customer allowances and claims	2,367	2,028
Deferred revenue	2,516	2,534
Employee benefit plans	1,218	1,213
Other	1,253	1,524
Total Automotive other liabilities	21,636	22,089
Other liabilities and deferred revenue	38,074	38,626
Financial Services [Member]
Liabilities, Noncurrent [Abstract]
Other liabilities and deferred revenue	$ 2,067	$ 2,260