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Investments Accounted for Using the Equity Method and Variable Interest Entities, or VIEs - Summarized Financial Information (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Investments Accounted for by the Equity Method    
Accounts receivable and Other current assets $ 8,195 $ 8,964
Current liabilities 8,781 8,813
Variable Interest Entity, Primary Beneficiary    
Investments Accounted for by the Equity Method    
Accounts receivable and Other current assets 2,449 2,402
Current liabilities 154 155
Net assets $ 2,295 $ 2,247