Financial Instruments - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	$ 2,629.5	$ 2,537.7	$ 2,642.8
Other comprehensive (loss) income before reclassifications	(56.3)	(6.3)
Amounts reclassified from accumulated other comprehensive income (loss)	3.7	(1.9)
Other comprehensive (loss) income	(52.6)	(8.2)	27.1
Balance at the end of the period	3,024.4	2,629.5	2,537.7
Accrued post-retirement benefit liability
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	(36.4)	(40.5)
Other comprehensive (loss) income before reclassifications	(7.3)	(0.6)
Amounts reclassified from accumulated other comprehensive income (loss)	5.5	4.7
Other comprehensive (loss) income	(1.8)	4.1
Balance at the end of the period	(38.2)	(36.4)	(40.5)
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	(55.0)	(43.1)
Other comprehensive (loss) income before reclassifications	(50.4)	(11.9)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0
Other comprehensive (loss) income	(50.4)	(11.9)
Balance at the end of the period	(105.4)	(55.0)	(43.1)
Derivative contracts and other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	(13.8)	(13.4)
Other comprehensive (loss) income before reclassifications	1.4	6.2
Amounts reclassified from accumulated other comprehensive income (loss)	(1.8)	(6.6)
Other comprehensive (loss) income	(0.4)	(0.4)
Balance at the end of the period	(14.2)	(13.8)	(13.4)
Accumulated Other Comprehensive Income (loss).
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at the beginning of the period	(105.2)	(97.0)	(124.1)
Other comprehensive (loss) income	(52.6)	(8.2)	27.1
Balance at the end of the period	$ (157.8)	$ (105.2)	$ (97.0)