Components of Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of goods sold	$ (680.2)	$ (526.8)	$ (2,181.3)	$ (1,498.6)
Other income (expense) - net	11.6	(2.5)	16.7	0.6
Selling, general and administrative expenses	(8.7)	(14.2)	(26.2)	(39.0)
Other operating (income) expense - net	0.2	(0.1)	(0.2)	(0.3)
Income tax effect	(20.6)	(6.8)	(64.6)	43.8
Net income (loss)	44.3	(52.4)	99.4	(227.5)
Reclassification out of accumulated other comprehensive income [Member] | Defined benefit plan liabilities
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of goods sold	0.4	0.7	1.3	2.2
Other income (expense) - net	(8.0)	0.0	(8.0)	0.0
Selling, general and administrative expenses	0.2	0.2	0.5	0.6
Other operating (income) expense - net	0.2	0.4	0.7	1.2
Income tax effect	(0.1)	(0.1)	(0.3)	(0.3)
Net income (loss)	(7.3)	1.2	(5.8)	3.7
Reclassification out of accumulated other comprehensive income [Member] | Unrealized loss on financial instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of goods sold	(0.0)	0.0	(0.1)	(0.1)
Income tax effect	0.0	0.0	0.0	0.0
Net income (loss)	$ 0.0	$ 0.0	$ (0.1)	$ (0.1)