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Fair Value Measurements (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Cash and Cash Equivalents, Fair Value $ 607.9 $ 39.1
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Debt Instrument, Fair Value Disclosure 3,278.2 3,631.5
Current portion of long-term debt 299.9 0.0
Finance Lease, Liability, Noncurrent 4.7 5.3
Unamortized debt issuance costs 5.3 4.8
Carrying Amount    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Cash and Cash Equivalents, Fair Value 607.9 39.1
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Debt Instrument, Fair Value Disclosure 3,533.1 [1] 3,334.0 [2]
Fair Value | Fair Value, Inputs, Level 1    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Cash and Cash Equivalents, Fair Value 607.9 39.1
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Debt Instrument, Fair Value Disclosure 0.0 0.0
Fair Value | Fair Value, Inputs, Level 2    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Cash and Cash Equivalents, Fair Value 0.0 0.0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Debt Instrument, Fair Value Disclosure 3,278.2 3,631.5
Fair Value | Fair Value, Inputs, Level 3    
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]    
Cash and Cash Equivalents, Fair Value 0.0 0.0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]    
Debt Instrument, Fair Value Disclosure $ 0.0 $ 0.0
[1] The carrying amount of long-term debt, of which $299.9 million was recorded in Current Liabilities, excluded a $4.7 million long-term finance lease obligation and $5.3 million of unamortized debt issuance costs.
[2] The carrying amount of long-term debt excluded a $5.3 million long-term finance lease obligation and $4.8 million of unamortized debt issuance costs.