CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income before allocation to noncontrolling interests	$ 401.1	$ 435.4	$ 181.1
Components of other comprehensive (loss) income, net of tax
Currency translation adjustment	(93.3)	(69.2)	70.4
Changes in pension and postretirement plan assets and benefit obligation, net of tax	30.0	96.0	(53.6)
Other comprehensive (loss) income, net of tax	(63.3)	26.8	16.8
Comprehensive income before allocation to noncontrolling interests	337.8	462.2	197.9
Less: Noncontrolling interests in comprehensive (loss) income	(0.2)	0.6	(0.5)
Comprehensive income attributable to common shareholders	$ 338.0	$ 461.6	$ 198.4