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Investments Accounted for Using the Equity Method and Variable Interest Entities, or VIEs (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Investments Accounted for by the Equity Method    
Accounts receivable and Other current assets $ 16,837 $ 10,841
Current liabilities 12,233 7,915
Variable Interest Entity, Primary Beneficiary    
Investments Accounted for by the Equity Method    
Accounts receivable and Other current assets 573 939
Current liabilities 78 78
Net assets $ 495 $ 861