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Income Taxes - Federal, State and Foreign Income Tax Provisions/(Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal:
Current	$ 30.9	$ 35.9	$ 44.9
Deferred	16.5	2.6	(46.9)
State:
Current	3.8	4.3	3.8
Deferred	4.0	0.9	3.9
Foreign:
Current	2.3	3.9	2.9
Deferred	(4.3)	0.0	(3.0)
(Benefit) provision for income taxes	$ 53.3	$ 47.6	$ 5.6

X

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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