Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Condensed Consolidated Statements of Comprehensive Income (Loss)
Net income	$ 150.2	$ 120.4	$ 75.3	$ 363.1
Other comprehensive loss, net of income tax:
Foreign currency translation adjustments	(71.5)	(19.7)	(159.0)	(8.9)
Unrealized holding losses on financial investments	(0.4)		(0.4)
Post-retirement benefit obligation		(0.1)		(0.1)
Comprehensive income (loss)	78.3	100.6	(84.1)	354.1
Comprehensive income allocated to participating securities	(0.6)	(0.4)	(0.6)	(1.1)
Comprehensive income (loss) allocated to common stockholders, net of income tax	$ 77.7	$ 100.2	$ (84.7)	$ 353.0