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Receivables (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Receivables    
Receivables $ 9,996 $ 4,854
Allowance for credit losses (28) (47)
Receivables after allowance for credit losses 9,968 4,807
Income taxes receivable 21 1,024
Other receivables 389 278
Receivables, net 10,378 6,109
Receivables from Contracts with Customers [Member]    
Receivables    
Receivables 6,228 3,642
Receivables from Certain Purchase and Sale Arrangements [Member]    
Receivables    
Receivables $ 3,768 $ 1,212