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Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Excluding discrete items [Line Items]
Provision (benefit) for income taxes	$ 35.5	$ 25.0	$ 110.4	$ 83.5
Effective Income Tax Rate Reconciliation, Percent	34.70%	25.70%	30.10%	25.40%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Deferred Income Tax Expense (Benefit)			$ 1.7	$ 2.2

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