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Debt - Long-term (Details) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 17, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Debt issuance cost	$ (16.8)		$ (17.7)
Total long-term debt	2,818.4		2,816.2
Less: debt maturing within one year	85.9		84.5
Total long-term debt, less current portion	2,732.5		2,731.7
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Long-term debt, gross	0.0		0.0
Debt issuance cost		$ (1.5)
Letters of credit outstanding amount	160.0
Pollution Control and Industrial Revenue Bonds
Debt Instrument [Line Items]
Unamortized discount	0.1		0.1
Long-term debt, gross	$ 49.9		49.9
Pollution Control and Industrial Revenue Bonds \| Minimum
Debt Instrument [Line Items]
Interest Rate Percentage	6.45%
Senior Notes
Debt Instrument [Line Items]
Unamortized discount	$ 0.6		0.7
Long-term debt, gross	$ 1,899.4		1,899.3
Senior Notes \| Minimum
Debt Instrument [Line Items]
Interest Rate Percentage	3.20%
Senior Notes \| Maximum
Debt Instrument [Line Items]
Interest Rate Percentage	4.50%
2021 Term Loan Facility
Debt Instrument [Line Items]
Interest Rate Percentage	4.15%
Long-term debt, gross	$ 800.0		800.0
Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Interest Rate Percentage	5.80%
Foreign debt
Debt Instrument [Line Items]
Long-term debt, gross	$ 85.9		$ 84.7
Foreign debt \| Minimum
Debt Instrument [Line Items]
Interest Rate Percentage	0.00%
Foreign debt \| Maximum
Debt Instrument [Line Items]
Interest Rate Percentage	15.30%
Revolving Credit Facility
Debt Instrument [Line Items]
Credit agreement, available funds	$ 1,179.7