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MARKETABLE SECURITIES AND NON-CURRENT INVESTMENTS - Summary of Marketable Securities (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Trading Marketable Securities |  |
Cost | $ 3 | $ 4
Estimated Fair Value | 3 | 4
Available-for-Sale Marketable Securities |  |
Cost | 232 | 2,864
Estimated Fair Value | 229 | 2,862
Current Marketable Securities |  |
Cost | 235 | 2,868
Unrealized Gains | 0 | 6
Unrealized Losses | (3) | (8)
Estimated Fair Value | 232 | 2,866
U.S. government and agency debt securities |  |
Available-for-Sale Marketable Securities |  |
Cost | 200 | 963
Estimated Fair Value | 198 | 961
Current Marketable Securities |  |
Unrealized Gains | 0 | 2
Unrealized Losses | (2) | (4)
Mortgage and asset-backed debt securities |  |
Available-for-Sale Marketable Securities |  |
Cost | 0 | 3
Estimated Fair Value | 0 | 3
Current Marketable Securities |  |
Unrealized Gains | 0 | 0
Unrealized Losses | 0 | 0
Corporate debt securities |  |
Available-for-Sale Marketable Securities |  |
Cost | 32 | 1,891
Estimated Fair Value | 31 | 1,891
Current Marketable Securities |  |
Unrealized Gains | 0 | 4
Unrealized Losses | (1) | (4)
Non-U.S. government debt securities |  |
Available-for-Sale Marketable Securities |  |
Cost | 0 | 7
Estimated Fair Value | 0 | 7
Current Marketable Securities |  |
Unrealized Gains | 0 | 0
Unrealized Losses | $ 0 | $ 0

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