Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Income Tax Expense	$ (8.3)	$ (16.9)	$ (21.2)	$ (60.9)
Income before income taxes and equity income of unconsolidated entity	$ 87.3	$ 86.8	146.7	$ 294.6
Foreign Subsidiaries
Operating Loss Carryforwards [Line Items]
Discrete tax benefit for release of valuation allowance on deferred tax assets			7.6
Tax Year 2019
Operating Loss Carryforwards [Line Items]
Provision to return adjustments for 2019 tax return			$ 4.1
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward					$ 34.5