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Long-Term Debt (Maturities of Long Term Debt) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Total debt $ 3,378.3 $ 2,052.3
CMLP    
Debt Instrument [Line Items]    
2023 0.0  
2024 0.0  
2025 706.8  
2026 922.3  
2027 600.0  
Thereafter 1,150.0  
Total debt $ 3,379.1