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INVESTMENTS - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Aug. 02, 2022 | Dec. 31, 2021
Meituan |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Carrying Value |  | $ 2,000 |  | $ 2,000 |  |  | $ 2,300
Unrealized gain (loss) equity securities | [1] | 393 | $ 234 | (335) | $ 263 |  |
Meituan | Subsequent Event |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Market price, percent decrease |  |  |  |  |  | 9.00% |
DiDi Global Inc. |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Carrying Value |  | 116 |  | 116 |  |  | 195
Unrealized gain (loss) equity securities | [1] | 18 | 155 | (79) | 155 |  |
DiDi Global Inc. | Subsequent Event |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Market price, percent decrease |  |  |  |  |  | 11.00% |
Grab |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Carrying Value |  | 107 |  | 107 |  |  | 301
Unrealized gain (loss) equity securities | [2] | (41) |  | (194) |  |  |
Unrealized gain (loss) on debt securities | [2] |  | $ 126 |  | $ 126 |  |
Yanolja | Investment in private company equity securities |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Cost of investment without readily determinable fair values |  | 51 |  | 51 |  |  | 51
Equity securities, impairment loss, annual amount |  | 184 |  |  |  |  |
Investment in equity securities without readily determinable FV |  | 122 |  | 122 |  |  | 306
Long-term Investments | Investment in private company equity securities |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Cost of investment without readily determinable fair values |  | 78 |  | 78 |  |  | 66
Investment in equity securities without readily determinable FV |  | $ 153 |  | $ 153 |  |  | 325
Long-term Investments | Yanolja | Investment in private company equity securities |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |
Investment in equity securities without readily determinable FV |  |  |  |  |  |  | $ 306
[1] | Included in "Other income (expense), net" in the Unaudited Consolidated Statements of Operations.
[2] | Net unrealized losses for the three and six months ended June 30, 2022 are included in "Other income (expense), net" in the Unaudited Consolidated Statements of Operations and net unrealized gains for the three and six months ended June 30, 2021 are included in Net unrealized gains on available-for-sale securities in the Unaudited Consolidated Statements of Comprehensive Income (Loss).

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