Net Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue
Net revenues	$ 2,719.9	$ 2,854.0	$ 2,731.7
Americas
Disaggregation of Revenue
Net revenues	2,016.7	2,114.5	1,988.6
EMEA
Disaggregation of Revenue
Net revenues	554.6	572.5	589.9
Asia Pacific
Disaggregation of Revenue
Net revenues	148.6	167.0	153.2
Products
Disaggregation of Revenue
Net revenues	2,688.9	2,819.4	2,705.3
Products | Americas
Disaggregation of Revenue
Net revenues	2,016.7	2,114.5	1,988.6
Products | EMEA
Disaggregation of Revenue
Net revenues	530.4	546.1	567.8
Products | Asia Pacific
Disaggregation of Revenue
Net revenues	141.8	158.8	148.9
Services
Disaggregation of Revenue
Net revenues	31.0	34.6	26.4
Services | Americas
Disaggregation of Revenue
Net revenues	0.0	0.0	0.0
Services | EMEA
Disaggregation of Revenue
Net revenues	24.2	26.4	22.1
Services | Asia Pacific
Disaggregation of Revenue
Net revenues	$ 6.8	$ 8.2	$ 4.3