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Supplemental Balance Sheet Information (Details)
$ in Millions
Mar. 31, 2020
USD ($)
days
Dec. 31, 2019
USD ($)
Accounts and Notes Receivable [Abstract]    
Number of days from the period in which the corresponding sales occur that trade receivables are generally due | days 30  
Accounts and notes receivable, gross $ 612 $ 656
Allowance for doubtful accounts (101) (72)
Accounts and notes receivable, net $ 511 $ 584