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Debt - Fair Value of Long-Term Debt (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying value $ 6,065.5 $ 5,673.3
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value $ 5,895.2 $ 5,348.2