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Restructuring (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
Restructuring (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring Reserve [Roll Forward]
Provision	$ 14.0			$ 5.0			$ 41.0	$ 44.0
Drivetrain [Member]
Restructuring Reserve [Roll Forward]
Provision								6.0
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	18.0	$ 12.0	$ 25.0	27.0	$ 6.0	$ 5.0	25.0	5.0
Provision	8.0	8.0	7.0	2.0	27.0	2.0
Cash payments	(8.0)	(2.0)	(20.0)	(10.0)	(6.0)	(2.0)
Translation adjustment						1.0
Ending Balance	18.0	18.0	12.0	19.0	27.0	6.0	18.0	19.0
Employee Severance [Member] \| Drivetrain [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	4.0	4.0	4.0	5.0	5.0	4.0	4.0	4.0
Provision	0.0	0.0	0.0	0.0	1.0	1.0
Cash payments	(1.0)	0.0	0.0	(4.0)	(1.0)	(1.0)
Translation adjustment						1.0
Ending Balance	3.0	4.0	4.0	1.0	5.0	5.0	3.0	1.0
Employee Severance [Member] \| Engine [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	14.0	8.0	21.0	22.0	1.0	1.0	21.0	1.0
Provision	8.0	8.0	7.0	2.0	26.0	1.0
Cash payments	(7.0)	(2.0)	(20.0)	(6.0)	(5.0)	(1.0)
Translation adjustment						0.0
Ending Balance	15.0	$ 14.0	$ 8.0	18.0	$ 22.0	$ 1.0	15.0	18.0
Emissions [Member] \| Engine [Member]
Restructuring Reserve [Roll Forward]
Provision	3.0			$ 5.0			14.0	$ 38.0
Structural costs reduction actions [Member] \| Drivetrain [Member]
Restructuring Reserve [Roll Forward]
Provision	1.0
Structural costs reduction actions [Member] \| Engine [Member]
Restructuring Reserve [Roll Forward]
Provision	3.0
Voluntary termination [Member] \| Employee Severance [Member] \| Engine [Member]
Restructuring Reserve [Roll Forward]
Provision	$ 7.0						18.0
Corporate, Non-Segment [Member]
Restructuring Reserve [Roll Forward]
Provision							$ 3.0