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Interest Expense, Net (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Interest Expense, Operating and Nonoperating [Abstract]      
Interest on long-term debt $ 506.2 $ 404.1 $ 344.5
Interest on short-term borrowings 43.2 108.9 22.7
Debt discount/cost amortization 13.8 13.5 11.7
Accounts receivable securitization fees 1.5 2.7 2.5
Allowance for borrowed funds used and interest capitalized during construction (40.1) (25.3) (6.7)
Debt-based post-in-service carrying charges (26.4) (30.7) (21.1)
Other 19.0 16.4 8.0
Total Interest Expense, net $ 517.2 $ 489.6 $ 361.6