Presentation - Reconciliations between Consolidated and Sector Deferred Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	$ 10,579	$ 11,509
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	556	502
Automotive [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Automotive sector current deferred income tax assets	2,443	3,664
Automotive sector non-current deferred income tax assets	11,409	10,687
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Automotive sector current deferred income tax liabilities	130	13
Automotive sector non-current deferred income tax liabilities	302	287
Financial Services [Member]
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	3,539	3,179
Financial Services [Member] | Other assets [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	142	135
Intersector [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	13,994	14,486
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	3,971	3,479
Intersector Eliminations [Member]
Sector balance sheet presentation of deferred income tax assets [Abstract]
Deferred income tax assets	(3,415)	(2,977)
Sector balance sheet presentation of deferred income tax liabilities [Abstract]
Deferred income tax liabilities	$ (3,415)	$ (2,977)