Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 217.2	$ 177.2	$ 315.2	$ 260.8
Other comprehensive income (loss):
Foreign currency translation adjustments	7.5	(7.9)	14.3	(9.1)
Net change in pension and post-retirement liabilities	(0.6)	(1.1)	(0.7)	(2.7)
Reclassification of pension and post-retirement benefit losses into earnings	0.2	1.4	0.4	2.9
Pension settlements	0.1	0.2	0.3	0.3
Share of equity method investments other comprehensive income	0.0	0.7	0.0	0.7
Net change in fair value of cash flow hedges	(5.8)	(30.9)	0.5	(11.3)
Reclassification of cash flow hedge (gains) losses into earnings	0.0	(8.8)	0.4	(16.2)
Other comprehensive income (loss) before taxes	1.4	(46.4)	15.2	(35.4)
Tax benefit (expense)	1.4	9.0	(0.4)	5.6
Other comprehensive income (loss), net of tax	2.8	(37.4)	14.8	(29.8)
Comprehensive income	$ 220.0	$ 139.8	$ 330.0	$ 231.0