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REGULATORY ASSETS, LIABILITIES, AND BALANCING ACCOUNTS (Current Regulatory Balancing Accounts, Net) (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
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Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | $ 1,676 | $ 1,121
Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 3,165 | 2,999
Electric distribution | Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 0 | 121
Electric distribution | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 850 | 0
Electric transmission | Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 132 | 24
Gas distribution and transmission | Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 113 | 83
Energy procurement | Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 224 | 211
Energy procurement | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 505 | 310
Public purpose programs | Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 286 | 259
Public purpose programs | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 345 | 321
Fire hazard prevention memorandum account | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 20 | 50
Fire risk mitigation memorandum account | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 5 | 14
Wildfire mitigation plan memorandum account | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 27 | 67
Wildfire mitigation balancing account | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 9 | 91
General rate case memorandum accounts | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 351 | 468
Vegetation management balancing account | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 305 | 127
Insurance premium costs | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 95 | 605
Wildfire expense memorandum account | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 0 | 440
Residential uncollectibles balancing accounts | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 104 | 127
Nuclear decommissioning adjustment mechanism | Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 106 | 137
Catastrophic event memorandum account | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 287 | 0
Other | Regulatory Balancing Accounts Payable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | 815 | 286
Other | Regulatory Balancing Accounts Receivable |  |
Regulatory Assets [Line Items] |  |
Total regulatory balancing accounts | $ 262 | $ 379

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- Definition The utilities current regulatory balancing accounts represent the amounts expected to be received from or refunded to the utilities customers through authorized rate adjustments within the next 12 months. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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