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Accounts Receivable (Notes)
 9 Months Ended
Sep. 30, 2021
Accounts Receivable, after Allowance for Credit Loss [Abstract]  
Accounts Receivable Accounts Receivable
Accounts receivable consist of the following:
September 30,
2021		December 31,
2020
Trade customers$1,553 $1,086 
Related parties2 9 
Allowance for credit losses(23)(17)
1,532 1,078 
Federal and state taxes49 92 
Other61 44 
Accounts receivable, net$1,642 $1,214