XML 78 R83.htm IDEA: XBRL DOCUMENT v3.20.1
Commitments and Contingencies - Concentrations of Credit Risk (Details)
$ in Millions
3 Months Ended 14 Months Ended
Mar. 31, 2020
USD ($)
Customer
Dec. 31, 2019
USD ($)
Customer
Mar. 31, 2019
Customer
Mar. 31, 2020
USD ($)
Customer
Jan. 29, 2019
USD ($)
Customer Concentration Risk          
Concentration Risk [Line Items]          
Number of customers representing ten percent or more of revenue | Customer 0   0    
Number of customers representing ten percent or more of net receivable position | Customer 0 0   0  
PG&E          
Concentration Risk [Line Items]          
Receivables sold   $ 36      
Cash received from sale of receivables   $ 34      
PG&E | Pre-Petition Receivables          
Concentration Risk [Line Items]          
Accounts receivable $ 5     $ 5 $ 165
Proceeds from collection of pre-petition receivables       $ 124