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Interest Expense, Net (Tables) | 12 Months Ended
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Dec. 31, 2020
Interest Expense [Abstract] |
Schedule Of Interest Expense, Net |
Year Ended December 31, (in millions) | 2020 |  | 2019 |  | 2018
Interest on long-term debt | $ | 354.2 |  |  | $ | 327.7 |  |  | $ | 342.2 |
Interest on short-term borrowings | 14.7 |  |  | 50.8 |  |  | 31.8 |
Debt discount/cost amortization | 9.1 |  |  | 8.3 |  |  | 7.7 |
Accounts receivable securitization fees | 2.6 |  |  | 2.6 |  |  | 2.6 |
Allowance for borrowed funds used and interest capitalized during construction | (7.0) |  |  | (7.5) |  |  | (9.1) |
Debt-based post-in-service carrying charges | (14.6) |  |  | (18.7) |  |  | (35.0) |
Other | 11.7 |  |  | 15.7 |  |  | 13.1 |
Total Interest Expense, net | $ | 370.7 |  |  | $ | 378.9 |  |  | $ | 353.3 |

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