Revenues - Commercial Vehicle Distribution and Other (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Total revenues	$ 5,971.6	$ 5,967.6	$ 14,631.8	$ 17,287.8
Commercial Vehicle Distribution and Other
Revenues
Total revenues	122.7	119.9	322.2	393.5
Commercial Vehicle Distribution and Other | Commercial Vehicles Australia
Revenues
Total revenues	$ 122.7	$ 119.9	$ 322.2	$ 393.5