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FAIR VALUE MEASUREMENTS (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Price risk management instruments, netting | $ (1) | $ 42
Price risk management instruments, assets | 409 | 456
TOTAL ASSETS | 6,262 | 5,501
Liabilities: |  |
Price risk management instruments, netting | (8) | (54)
TOTAL LIABILITIES | 284 | 278
Amount primarily related to deferred taxes on appreciation of investment value | 757 | 717
Short-term investments (2) |  |
Assets: |  |
Short-term investments (2) | 567 | 203
Short-term investments (2) | Wildfire self-insurance |  |
Assets: |  |
Short-term investments (2) | 438 |
Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments (2) | 37 | 52
Global equity securities | 2,283 | 2,144
Fixed-income securities | 2,128 | 2,077
TOTAL ASSETS | 4,468 | 4,291
Customer credit trust |  |
Assets: |  |
Short-term investments (2) | 351 | 49
Global equity securities | 47 | 71
Fixed-income securities | 109 | 113
TOTAL ASSETS | 507 | 233
Rabbi trusts |  |
Assets: |  |
Short-term investments (2) | 103 | 102
Global equity securities | 5 | 5
Life insurance contracts | 65 | 65
TOTAL ASSETS | 173 | 172
Long-term disability trust |  |
Assets: |  |
Short-term investments (2) | 7 | 7
TOTAL ASSETS | 138 | 146
Electricity |  |
Assets: |  |
Price risk management instruments, netting | 0 | (1)
Price risk management instruments, assets | 400 | 410
Liabilities: |  |
Price risk management instruments, netting | (6) | (6)
Price risk management instruments, liabilities | 283 | 250
Gas |  |
Assets: |  |
Price risk management instruments, netting | (1) | 43
Price risk management instruments, assets | 9 | 46
Liabilities: |  |
Price risk management instruments, netting | (2) | (48)
Price risk management instruments, liabilities | 1 | 28
Level 1 |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 0 | 0
TOTAL ASSETS | 4,556 | 3,830
Liabilities: |  |
TOTAL LIABILITIES | 0 | 0
Level 1 | Short-term investments (2) |  |
Assets: |  |
Short-term investments (2) | 567 | 203
Level 1 | Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments (2) | 37 | 52
Global equity securities | 2,283 | 2,144
Fixed-income securities | 1,135 | 1,168
TOTAL ASSETS | 3,455 | 3,364
Level 1 | Customer credit trust |  |
Assets: |  |
Short-term investments (2) | 351 | 49
Global equity securities | 47 | 71
Fixed-income securities | 21 | 29
TOTAL ASSETS | 419 | 149
Level 1 | Rabbi trusts |  |
Assets: |  |
Short-term investments (2) | 103 | 102
Global equity securities | 5 | 5
Life insurance contracts | 0 | 0
TOTAL ASSETS | 108 | 107
Level 1 | Long-term disability trust |  |
Assets: |  |
Short-term investments (2) | 7 | 7
TOTAL ASSETS | 7 | 7
Level 1 | Electricity |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 0 | 0
Liabilities: |  |
Price risk management instruments, gross subject to netting | 0 | 0
Level 1 | Gas |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 0 | 0
Liabilities: |  |
Price risk management instruments, gross subject to netting | 0 | 0
Level 2 |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 25 | 10
TOTAL ASSETS | 1,171 | 1,068
Liabilities: |  |
TOTAL LIABILITIES | 52 | 119
Level 2 | Short-term investments (2) |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Level 2 | Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Global equity securities | 0 | 0
Fixed-income securities | 993 | 909
TOTAL ASSETS | 993 | 909
Level 2 | Customer credit trust |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Global equity securities | 0 | 0
Fixed-income securities | 88 | 84
TOTAL ASSETS | 88 | 84
Level 2 | Rabbi trusts |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Global equity securities | 0 | 0
Life insurance contracts | 65 | 65
TOTAL ASSETS | 65 | 65
Level 2 | Long-term disability trust |  |
Assets: |  |
Short-term investments (2) | 0 | 0
TOTAL ASSETS | 0 | 0
Level 2 | Electricity |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 15 | 7
Liabilities: |  |
Price risk management instruments, gross subject to netting | 49 | 43
Level 2 | Gas |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 10 | 3
Liabilities: |  |
Price risk management instruments, gross subject to netting | 3 | 76
Level 3 |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 385 | 404
TOTAL ASSETS | 385 | 404
Liabilities: |  |
TOTAL LIABILITIES | 240 | 213
Level 3 | Short-term investments (2) |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Level 3 | Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Global equity securities | 0 | 0
Fixed-income securities | 0 | 0
TOTAL ASSETS | 0 | 0
Level 3 | Customer credit trust |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Global equity securities | 0 | 0
Fixed-income securities | 0 | 0
TOTAL ASSETS | 0 | 0
Level 3 | Rabbi trusts |  |
Assets: |  |
Short-term investments (2) | 0 | 0
Global equity securities | 0 | 0
Life insurance contracts | 0 | 0
TOTAL ASSETS | 0 | 0
Level 3 | Long-term disability trust |  |
Assets: |  |
Short-term investments (2) | 0 | 0
TOTAL ASSETS | 0 | 0
Level 3 | Electricity |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 385 | 404
Liabilities: |  |
Price risk management instruments, gross subject to netting | 240 | 213
Level 3 | Gas |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 0 | 0
Liabilities: |  |
Price risk management instruments, gross subject to netting | 0 | 0
Assets measured at NAV | Nuclear decommissioning trusts |  |
Assets: |  |
Assets measured at NAV | 20 | 18
Assets measured at NAV | Long-term disability trust |  |
Assets: |  |
Assets measured at NAV | $ 131 | $ 139

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