v3.21.1

OTHER CURRENT ASSETS - MARKETABLE SECURITIES AND OTHER SHORT-TERM INVESTMENTS (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Net Investment Income [Line Items] |  |  |
Marketable securities and other short-term investments | $ 351 |  | $ 346
Marketable securities at fair value | 327 |  | 343
Unrealized gains | (6) | $ (16) |
Foreign government securities |  |  |
Net Investment Income [Line Items] |  |  |
Marketable securities and other short-term investments | 190 |  | 207
Corporate debt securities |  |  |
Net Investment Income [Line Items] |  |  |
Marketable securities and other short-term investments | 137 |  | 136
Other |  |  |
Net Investment Income [Line Items] |  |  |
Marketable securities and other short-term investments | $ 24 |  | $ 3

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