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Accumulated Other Comprehensive Loss ("AOCL") - Reclassifications out of AOCL (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]    
Cost of goods sold $ (473.0) $ (504.3)
Selling, general and administrative expenses (14.1) (13.4)
Other operating expense - net (0.5) (7.2)
Net of tax 246.8 (38.6)
Reclassification out of accumulated other comprehensive income | Defined benefit plan and other postretirement liabilities    
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]    
Cost of goods sold 0.9 0.8
Selling, general and administrative expenses 0.2 0.2
Other operating expense - net 0.7 0.2
Net of tax 1.8 1.2
Reclassification out of accumulated other comprehensive income | Unrealized gain (loss) on financial instruments    
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]    
Cost of goods sold (0.1) (0.1)
Net of tax $ (0.1) $ (0.1)