Consolidated Statements of Income (Parenthetical) $ in Millions	6 Months Ended
Jun. 30, 2018 USD ($)
Income Statement [Abstract]
Net loss from discontinued operations, income tax benefit	$ 0.1

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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