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 (loss)	$ (119.8)	$ 93.1	$ (65.6)	$ 316.2
Other comprehensive income (loss), net of tax:
Cumulative translation adjustments (net of tax of $0.0, $0.0, $3.9, $0.0)	(45.0)	(1.7)	(84.1)	(2.0)
Net gain (loss) on cash flow hedges (net of tax of $0.0, $0.0, $0.6, $0.0)	(5.6)	1.2	(3.8)	5.6
Pension and other postretirement benefit plans:
Net gain arising during period (net of tax of $0.8, $1.0, $1.6, $1.0)	2.4	9.3	10.0	9.3
Amounts reclassified from accumulated other comprehensive income	(0.9)	(1.2)	(1.9)	0.9
Total other comprehensive income (loss), net of tax	(49.1)	7.6	(79.8)	13.8
Comprehensive income (loss)	$ (168.9)	$ 100.7	$ (145.4)	$ 330.0