Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Valuation Allowance [Line Items]
Income taxes paid	$ 4.6
Unrecognized tax benefits, gross	17.4	$ 14.5	$ 11.5	$ 11.3
Unrecognized tax benefits, net	18.9	14.2
Income tax interest and penalties	2.8	2.7
Indirect tax benefits	1.3	3.0
Potential income tax interest and penalties	0.3	$ 0.2	$ 0.2
Net Parent Investment
Valuation Allowance [Line Items]
Income tax receivable	1.4
Foreign Tax Authority
Valuation Allowance [Line Items]
Valuation allowance decrease	7.3
Operating loss carryforwards	123.1
Tax credit carryforward	0.3
Domestic Tax Authority
Valuation Allowance [Line Items]
Operating loss carryforwards	1.8
State and Local Jurisdiction
Valuation Allowance [Line Items]
Operating loss carryforwards	25.8
Tax credit carryforward	$ 0.6