Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate	27.90%	99.40%	25.90%	20.80%
Unrecognized tax benefits	$ 23.5		$ 23.5		$ 23.7
Unrecognized tax benefits that would impact effective tax rate	23.5		23.5
Unrecognized tax benefits, interest on income taxes accrued	9.6		9.6		$ 8.4
Decrease in unrecognized tax benefits is reasonably possible	$ 21.6		$ 21.6

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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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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Amount of unrecognized tax benefits.

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Amount of interest expense accrued for an underpayment of income taxes.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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