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REGULATORY ASSETS, LIABILITIES, AND BALANCING ACCOUNTS (Long-Term Regulatory Liabilities) (Details) - USD ($) $ in Millions | 3 Months Ended |
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Mar. 31, 2022 | Dec. 31, 2021
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | $ 11,563 | $ 11,999
Proceeds received from sale of transmission tower wireless licenses, to be refunded to customers | 442 |
Federal Energy Regulatory Commission |  |
Regulatory Liabilities [Line Items] |  |
Proceeds received from sale of transmission tower wireless licenses, to be refunded to customers | 307 |
California Public Utilities Commission |  |
Regulatory Liabilities [Line Items] |  |
Proceeds received from sale of transmission tower wireless licenses, to be refunded to customers | 135 |
Cost of removal obligations |  |
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | 7,431 | 7,306
Recoveries in excess of AROs |  |
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | 154 | 388
Public purpose programs |  |
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | 1,043 | 946
Employee benefit plans |  |
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | 1,234 | 1,229
Transmission tower wireless licenses |  |
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | 442 | 446
SFGO sale |  |
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | 323 | 343
Other |  |
Regulatory Liabilities [Line Items] |  |
Total long-term regulatory liabilities | $ 936 | $ 1,341

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- Definition Proceeds Received From Sale of Transmission Tower Wireless Licenses, Refunded To Customers + 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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- Definition The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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