Income Taxes (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Effective income tax rate (as a percent)	50.00%	12.00%
Effective tax rate reconciliation, change due to Tax Cuts and Jobs Act		18.00%
Dutch income tax liability	$ 6.6		$ 6.3
Effective tax rate reconciliation, estimated impact of foreign tax audit	19.00%
Income taxes paid	$ 19.7	$ 16.6

Effective Income Tax Rate Reconciliation, Estimated Impact Of Foreign Tax Audit, Percent

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Amount of deferred tax liability attributable to taxable temporary differences.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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