Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 80.3	$ 80.1	$ 233.4	$ 210.5
Currency translation adjustments	(33.1)	(0.4)	(37.3)	(26.2)
Net unrealized pension and other benefit actuarial gains (losses) and prior service credits (net of tax)	0.3	(0.6)		(0.1)
Net unrealized (losses) gains on financial instruments (net of tax)	(10.2)	0.2	(15.8)	(11.9)
Total other comprehensive income	(43.0)	(0.8)	(53.1)	(38.2)
Comprehensive income	$ 37.3	$ 79.3	$ 180.3	$ 172.3

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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