Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	134.00%	(35.00%)	63.00%	1.00%
Earnings of foreign entities	$ 11.0	$ 7.2	$ 4.8	$ 5.4
Decrease in valuation allowance, non-cash benefit to income tax expense			(18.5)
Unrecognized tax benefit for uncertain tax positions	28.3		28.3		$ 28.4
Liabilities for interest and penalties, excluded from unrecognized tax benefits for uncertain tax positions	1.2		1.2		$ 1.2
Decrease in unrecognized tax benefits due to the settlement of various audits and expiration of statutes of limitations	$ 3.9		$ 3.9

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

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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