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

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