Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 118.1	$ 181.4	$ 183.7
Foreign currency adjustments:
Foreign currency translation adjustment	(5.3)	23.9	15.6
Unrealized gain (loss) on net investment hedges, net of tax provision (benefit) of $2.3, $(2.7), and $0.7	7.3	(9.0)	2.3
Total foreign currency adjustments, net of tax provision (benefit) of $2.3, $(2.7), and $0.7	2.0	14.9	17.9
Derivative instruments:
Unrealized gain (loss), net of tax provision (benefit) of $1.7, $(1.3), and $(1.1)	5.5	(4.3)	(3.7)
Reclassifications of deferred derivative instruments (gain) loss, included in net income (loss), net of tax (provision) benefit of $(0.3), $0.3, and $(0.1)	(0.7)	0.9	(0.2)
Total derivative instruments, net of tax provision (benefit) of $1.4, $(1.0), and $(1.2)	4.8	(3.4)	(3.9)
Pension & other postretirement benefits:
Unrealized actuarial gains (losses) and prior service (costs) credits, net of tax provision (benefit) of $0.4, $(0.6), and $(0.4)	1.5	(2.1)	(1.4)
Reclassifications of net actuarial and other (gain) loss, amortization of prior service cost, and settlement and curtailment (income) charges, included in net income, net of tax (provision) benefit of $(0.1), zero, and zero	0.1	0.3	0.1
Total pension and other postretirement benefits, net of tax provision (benefit) of $0.5, $(0.6), and $(0.4)	1.6	(1.8)	(1.3)
Other comprehensive income (loss), net of tax	8.4	9.7	12.7
Comprehensive income (loss)	$ 126.5	$ 191.1	$ 196.4