Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 33.1	$ 28.7
Changes in cumulative translation adjustment, net of tax of $1.6 million and $0.4 million respectively	(7.9)	(5.0)
Changes in unrealized gains on derivative instruments, net of tax of $0.0 million and $0.1 million respectively	0.0	(0.5)
Amortization of prior service credit, net of tax of $0.0 million and $0.0 million respectively	(0.2)	(0.2)
Amortization of actuarial net losses, net of tax of $0.0 million and $0.0 million respectively	0.2	(0.0)
Total other comprehensive loss	(7.9)	(5.7)
Total comprehensive income	$ 25.2	$ 23.0