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

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Indicates (true/false) whether practical expedient is elected to recognize incremental cost of obtaining contract as expense when incurred if amortization period would have been one year or less.

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Revenue - Impact of ASU Adoption (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Impact of ASU adoption
Income tax expense (benefit)	$ 21.2	$ 9.8	$ 41.4	$ 25.9
Practical expedient, incremental costs of obtaining a contract			true
ASU No. 2014-09 \| Adjustments
Impact of ASU adoption
Retained earnings	$ 8.2		$ 8.2
Income tax expense (benefit)			$ (2.1)