v3.21.2

OTHER CURRENT ASSETS - MARKETABLE SECURITIES AND OTHER SHORT-TERM INVESTMENTS (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Net Investment Income [Line Items] |  |  |  |  |
Marketable securities and other short-term investments | $ 451 |  | $ 451 |  | $ 346
Marketable securities at fair value | 431 |  | 431 |  | 343
Unrealized gains | 42 | $ 4 | 60 | $ 16 |
Foreign government securities |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |
Marketable securities and other short-term investments | 231 |  | 231 |  | 207
Corporate debt securities |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |
Marketable securities and other short-term investments | 154 |  | 154 |  | 136
Equity securities |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |
Marketable securities and other short-term investments | 50 |  | 50 |  | 0
Other |  |  |  |  |
Net Investment Income [Line Items] |  |  |  |  |
Marketable securities and other short-term investments | $ 16 |  | $ 16 |  | $ 3

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