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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of interest income earned from interest bearing assets classified as other.

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The amount of cash received during the period as refunds for the overpayment of taxes.

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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 of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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

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Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate (percent)		24.50%	32.10%
Gross unrecognized tax benefit		$ 5.6		$ 5.2
Expected change in unrecognized tax benefits		1.3
Accrued interest on income taxes		1.6		1.1
Accrued penalties on income taxes, less than		$ 0.1		$ 0.1
Internal Revenue Service (IRS)
Income Tax Examination [Line Items]
Proceeds from income tax refunds	$ 13.3
Interest income	$ 0.9