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Marketable and Other Securities - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Dec. 31, 2022
Marketable Securities [Abstract]        
Cash and cash equivalents $ 22,516 $ 18,853    
Restricted cash included in Other current assets 2,652      
Restricted cash included in Other assets 452      
Total $ 25,620 $ 21,917 $ 26,753 $ 21,948