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CONTINGENCIES AND OTHER MATTERS (Details) $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) | Feb. 08, 2021 complaint | Feb. 02, 2021 complaint | Jan. 19, 2021 complaint | Aug. 06, 2020 complaint | Jun. 26, 2020 complaint
Commitments and Contingencies Disclosure [Abstract] |  |  |  |  |  |
Reserves related to adverse developments | $ | $ 8 |  |  |  |  |
Number of shareholder derivative complaints | complaint |  | 2 | 3 | 2 | 3 | 3

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