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Consolidated Statements of Stockholders Equity (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Stockholders' Equity [Abstract]
Sale of the UK Business, tax		$ 2.5
Change in unrealized loss, tax	$ (3.6)	(2.0)	$ (0.8)
Change in minimum pension & postretirement liability, tax	$ 0.0	$ 0.1	$ 0.2

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- Definition

Other comprehensive income sale of business tax.

+ References

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- Definition

Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

+ References

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.

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