Restructuring (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Reserve [Roll Forward]
Provision	$ 13		$ 31		$ 27	$ 39
Drivetrain [Member]
Restructuring Reserve [Roll Forward]
Provision			3			6
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	12	$ 25	6	$ 5	25	5
Provision	8	7	27	2
Cash payments	(2)	(20)	(6)	(2)
Translation adjustment				1
Ending Balance	18	12	27	6	18	27
Employee Severance [Member] | Drivetrain [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	4	4	5	4	4	4
Provision	0	0	1	1
Cash payments	0	0	(1)	(1)
Translation adjustment				1
Ending Balance	4	4	5	5	4	5
Employee Severance [Member] | Engine [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	8	21	1	1	21	1
Provision	8	7	26	1
Cash payments	(2)	(20)	(5)	(1)
Translation adjustment				0
Ending Balance	14	$ 8	22	$ 1	14	22
Emissions [Member] | Engine [Member]
Restructuring Reserve [Roll Forward]
Provision	4		$ 28		11	$ 33
Voluntary termination [Member] | Employee Severance [Member] | Engine [Member]
Restructuring Reserve [Roll Forward]
Provision	$ 7				11
Corporate, Non-Segment [Member]
Restructuring Reserve [Roll Forward]
Provision					$ 3