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ACCOUNTS, NOTES AND OTHER RECEIVABLES (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]    
Trade $ 7,639 $ 7,705
Less - Allowance for doubtful accounts (146) (197)
Accounts receivable, Net 7,493 7,508
Accounts Notes And Other Receivables Paragraph Details [Abstract]    
Unbilled Contracts Receivable $ 1,586 $ 1,543