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Financial Instruments - Consolidated Statements of Cash Flows Reconciliation (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]              
Cash and cash equivalents $ 75,091   $ 73,387        
Restricted cash included in accounts receivable, net and other 333   497        
Restricted cash included in other assets 3,253   6        
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows $ 78,677 $ 71,673 $ 73,890 $ 50,081 $ 50,067 $ 54,253 $ 35,178