New Accounting Standards - Effect of change related to ASU 2014-09 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jan. 01, 2017	Dec. 31, 2016
Revenues
Financial Services Revenue	$ 2,802	$ 2,612	$ 8,209	$ 7,626
Costs and expenses
Cost of sales	30,288	30,668	96,345	93,707
Interest expense on Automotive debt	284	238	840	650
Provision for/(Benefit from) income taxes	186	426	1,044	2,525
Net income	1,571	961	5,215	5,388
Balance Sheet
Trade and other receivables	10,277		10,277		$ 11,085	$ 11,102
Other Assets, Current	3,570		3,570		3,675	3,368
Net investment in operating leases	28,714		28,714		27,751	28,829
Deferred income taxes	10,359		10,359		10,228	9,705
Payables	23,566		23,566		21,558	21,296
Other liabilities and deferred revenue, current	19,612		19,612		17,887	19,316
Other Liabilities and deferred revenue, Noncurrent	24,819		24,819		24,390	24,395
Deferred income taxes	804		804			691
Retained earnings	19,405		19,405		16,200	15,634
Operating Segments [Member] | Automotive
Revenues
Automotive Revenue	33,646	33,331	107,234	105,520
Balance Sheet
Debt payable within one year	3,551		3,551		3,011	2,685
Operating Segments [Member] | Non-Financial Services
Costs and expenses
Other income/(loss), net	709	672	2,079	2,126
Operating Segments [Member] | Financial Services
Costs and expenses
Other income/(loss), net	45	$ 132	141	$ 305
Balance Sheet
Debt payable within one year	47,623		47,623			$ 46,984
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Revenues
Financial Services Revenue	2,709		7,930
Costs and expenses
Cost of sales	30,536		96,166
Interest expense on Automotive debt	265		793
Provision for/(Benefit from) income taxes	194		1,040
Net income	1,607		5,211
Balance Sheet
Trade and other receivables	10,300		10,300
Other Assets, Current	3,233		3,233
Net investment in operating leases	29,510		29,510
Deferred income taxes	10,376		10,376
Payables	23,287		23,287
Other liabilities and deferred revenue, current	20,818		20,818
Other Liabilities and deferred revenue, Noncurrent	24,824		24,824
Deferred income taxes	804		804
Retained earnings	19,365		19,365
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Operating Segments [Member] | Automotive | Accounting Standards Update 2014-09 [Member]
Revenues
Automotive Revenue	33,897		106,937
Balance Sheet
Debt payable within one year	3,158		3,158
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Operating Segments [Member] | Non-Financial Services | Accounting Standards Update 2014-09 [Member]
Costs and expenses
Other income/(loss), net	731		2,142
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Operating Segments [Member] | Financial Services | Accounting Standards Update 2014-09 [Member]
Costs and expenses
Other income/(loss), net	138		420
Difference Between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member]
Revenues
Financial Services Revenue	93		279
Costs and expenses
Cost of sales	(248)		179
Interest expense on Automotive debt	19		47
Provision for/(Benefit from) income taxes	(8)		4
Net income	(36)		4
Balance Sheet
Trade and other receivables	(23)		(23)		(17)
Other Assets, Current	337		337		307
Net investment in operating leases	(796)		(796)		(1,078)
Deferred income taxes	(17)		(17)		(13)
Payables	279		279		262
Other liabilities and deferred revenue, current	(1,206)		(1,206)		(1,429)
Other Liabilities and deferred revenue, Noncurrent	(5)		(5)		(5)
Deferred income taxes	0		0
Retained earnings	40		40		36
Difference Between Revenue Guidance in Effect before and after Topic 606 [Member] | Operating Segments [Member] | Automotive | Accounting Standards Update 2014-09 [Member]
Revenues
Automotive Revenue	(251)		297
Balance Sheet
Debt payable within one year	393		393		$ 326
Difference Between Revenue Guidance in Effect before and after Topic 606 [Member] | Operating Segments [Member] | Non-Financial Services | Accounting Standards Update 2014-09 [Member]
Costs and expenses
Other income/(loss), net	(22)		(63)
Difference Between Revenue Guidance in Effect before and after Topic 606 [Member] | Operating Segments [Member] | Financial Services | Accounting Standards Update 2014-09 [Member]
Costs and expenses
Other income/(loss), net	$ (93)		$ (279)