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Marketable and Other Securities - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Marketable Securities [Abstract]        
Cash and cash equivalents $ 23,744 $ 18,853    
Restricted cash included in Other current assets 2,495      
Restricted cash included in Other assets 476      
Total $ 26,715 $ 21,917 $ 28,978 $ 21,948