RELATED PARTY AGREEMENTS AND TRANSACTIONS (Summary of Significant Related Party Transactions) (Details) - Pacific Gas & Electric Co - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Administrative services provided to PG&E Corporation | |||
Related Party Transaction [Line Items] | |||
Utility revenues from | $ 4 | $ 8 | $ 7 |
Administrative services received from PG&E Corporation | |||
Related Party Transaction [Line Items] | |||
Utility expenses from | 94 | 65 | 74 |
Utility employee benefit due to PG&E Corporation | |||
Related Party Transaction [Line Items] | |||
Utility expenses from | $ 76 | $ 73 | $ 91 |