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DERIVATIVES - INTEREST-RATE DERIVATIVES (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Oct. 31, 2019
--- | --- | ---
Interest Rate Swap, 6.348% |  |
Derivative [Line Items] |  |
Notional Principal Amount | $ 400 |
Weighted-Average Interest Rate | 6.348% |
Interest Rate Swap, 6.662% |  |
Derivative [Line Items] |  |
Notional Principal Amount | $ 350 | $ 125
Weighted-Average Interest Rate | 6.662% |
Interest Rate Swap, 6.709% |  |
Derivative [Line Items] |  |
Notional Principal Amount | $ 275 |
Weighted-Average Interest Rate | 6.709% |
Interest Rate Swap, 6.445% |  |
Derivative [Line Items] |  |
Notional Principal Amount | $ 450 |
Weighted-Average Interest Rate | 6.445% |

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