Segments - Geographic (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total net revenues	$ 1,138.2	$ 1,133.1	$ 3,222.5	$ 3,237.3
Total Americas
Segment Reporting Information [Line Items]
Total net revenues	624.3	648.8	1,812.6	1,841.2
United States
Segment Reporting Information [Line Items]
Total net revenues	575.0	599.4	1,651.7	1,677.2
Other
Segment Reporting Information [Line Items]
Total net revenues	49.3	49.4	160.9	164.0
Europe, Middle East, and Africa
Segment Reporting Information [Line Items]
Total net revenues	321.1	301.5	870.2	879.6
Asia Pacific
Segment Reporting Information [Line Items]
Total net revenues	$ 192.8	$ 182.8	$ 539.7	$ 516.5