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LONG-TERM OBLIGATIONS LONG TERM OBLIGATIONS (Tables) | 3 Months Ended
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Mar. 31, 2021
Debt Disclosure [Abstract] |
Schedule of Debt | Letters of credit outstanding (in millions):
|  |  |  | March 31, 2021 |  |  |  |  | December 31, 2020
$400 Million Facility |  |  |  |  | $ | — |  |  |  |  |  |  | $ | — |
$300 Million Facility |  |  |  |  | 59.7 |  |  |  |  |  |  | 35.3 |
Bilateral Arrangements |  |  |  |  | 55.5 |  |  |  |  |  |  | 47.2 |
Total |  |  |  |  | $ | 115.2 |  |  |  |  |  |  | $ | 82.5 |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments | Based on indicative price quotations from financial institutions multiplied by the amount recorded on the Company’s Condensed Consolidated Balance Sheet (“Book Value”), the Company estimates the fair values of its debt set forth below as of March 31, 2021, as follows (in millions, except for quotes):
| Book Value |  | Quote |  | Fair Value
5-5/8% Notes | $ | 600.0 |  |  | $ | 1.02875 |  |  | $ | 617.3 |
2017 Credit Agreement Original Term Loan (net of discount) | $ | 383.1 |  |  | $ | 0.99708 |  |  | $ | 382.0 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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