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Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current
Federal	$ 133.1	$ 150.4	$ 130.6
Foreign	22.4	22.3	19.7
State and other	22.8	22.9	16.1
Deferred
Federal, state and other	(27.2)	(23.9)	(11.3)
Foreign	8.4	(2.0)	(1.7)
Income tax expense as reported	$ 159.5	$ 169.7	$ 153.4

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

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