Other Current Liabilities - Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Current Liabilities
Deferred revenue	$ 118.0	$ 102.6
Accrued compensation	110.6	105.7
Accrued warranty	20.3	21.1	$ 19.7	$ 20.6
Contingent consideration	2.7	12.6
Income taxes payable	98.0	52.4
Other taxes payable	18.5	17.5
Derivative liabilities	8.0	1.2
Operating leases	21.3	20.6
Legal and professional fees	14.3	8.8
Other accrued expenses	54.2	46.3
Other current liabilities	$ 465.9	$ 388.8