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v3.20.4

Debt and Financing Obligations (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt Disclosure [Abstract] |
Schedule of Long-term Debt Instruments | Total debt and financing obligations consisted of the following:
| December 31,
| 2020 |  | 2019
| (Dollars in millions)
7.50 percent senior notes, due 2025 ("2025 Senior Notes") | $ | 587.3 |  |  | $ | 650.0 |
$400.0 revolving credit facility, due 2024 ("Revolving Facility") | 88.3 |  |  | 143.3 |
5.35 percent financing obligation, due 2024 | 14.9 |  |  | 7.2 |
Total borrowings | $ | 690.5 |  |  | $ | 800.5 |
Original issue discount | (3.3) |  |  | (4.3) |
Debt issuance costs | (10.3) |  |  | (13.3) |
Total debt and financing obligation | $ | 676.9 |  |  | $ | 782.9 |
Less: current portion of long-term debt and financing obligation | 3.0 |  |  | 2.9 |
Total long-term debt and financing obligation | $ | 673.9 |  |  | $ | 780.0 |
Schedule of Maturities of Long-term Debt | As of December 31, 2020, the combined aggregate amount of maturities for long-term borrowings for each of the next five years is as follows:
| (Dollars in millions)
2021 | $ | 3.0 |
2022 | 3.2 |
2023 | 3.3 |
2024 | 93.7 |
2025 | 587.3 |
2026-Thereafter | — |
Total | $ | 690.5 |

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