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Interest Expense, Net (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Interest Expense [Abstract]      
Interest on long-term debt $ 344.5 $ 336.4 $ 354.2
Interest on short-term borrowings 22.7 0.6 14.7
Debt discount/cost amortization 11.7 11.0 9.1
Accounts receivable securitization fees 2.5 1.4 2.6
Allowance for borrowed funds used and interest capitalized during construction (6.7) (4.6) (7.0)
Debt-based post-in-service carrying charges (21.1) (14.7) (14.6)
Other 8.0 11.0 11.7
Total Interest Expense, net $ 361.6 $ 341.1 $ 370.7