Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 65.7	$ 25.0
Other comprehensive income, net of reclassification adjustments:
Foreign currency translation adjustments	12.2	9.7
Defined benefit pension plans, net of tax	3.0	3.1
Unrealized loss on derivatives, net of tax	(4.1)	(0.9)
Other comprehensive income, net of reclassification adjustments	11.1	11.9
Comprehensive income	76.8	36.9
Comprehensive (loss) income	(2.1)	(0.8)
Comprehensive (loss) income	$ 74.7	$ 36.1

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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