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SUPPLEMENTAL FINANCIAL INFORMATION - Other Current Assets (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
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