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SUPPLEMENTAL FINANCIAL INFORMATION - Other Current Assets (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
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Supplemental Financial Information [Abstract] |  |
Income taxes | $ 3,205 | $ 3,927
Research and development | 796 | 723
Contract assets | 408 | 416
Restricted cash | 2 | 55
Other | 1,156 | 786
Other current assets | $ 5,567 | $ 5,907

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