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INCOME TAXES (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Income Tax Examination [Line Items] |  |  |  |  |  |  |
Provision for income taxes | $ 37 |  | $ (31) |  | $ 99 | $ 25 |
Effective Income Tax Rate Reconciliation, Percent | 0.00% | [1] | 0.00% | [1] | 44.00% | 8.00% |
Unrecognized Tax Benefits | $ 256 |  |  |  | $ 256 |  | $ 257
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount |  |  | $ 19 |  |  | $ 19 |
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount |  |  | $ 7 |  |  | $ 7 |
Effective Income Tax Rate Reconciliation, Disposition of Business, Amount | 21 |  |  |  | 21 |  |
Minimum [Member] |  |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 65 |  |  |  | $ 65 |  |
[1] | The calculated effective tax rates are greater than 100 percent or less than zero percent.

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