Goodwill - By Reporting Unit (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Changes in the carrying amount of goodwill
Goodwill by reporting unit	$ 1,806.0	$ 1,934.0	$ 2,527.0
Europe reporting unit
Changes in the carrying amount of goodwill
Goodwill by reporting unit	0.9
Latin America reporting unit
Changes in the carrying amount of goodwill
Goodwill by reporting unit	0.5
North America reporting unit
Changes in the carrying amount of goodwill
Goodwill by reporting unit	$ 0.4
Risk of future impairment charges (as a percent)	2.00%