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FAIR VALUE MEASUREMENTS (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Price risk management instruments, netting | $ (8) | $ 42
Price risk management instruments, assets | 348 | 456
TOTAL ASSETS | 7,051 | 5,501
Liabilities: |  |
Price risk management instruments, netting | (17) | (54)
TOTAL LIABILITIES | 275 | 278
Amount primarily related to deferred taxes on appreciation of investment value | 822 | 717
Short-term investments |  |
Assets: |  |
Short-term investments | 459 | 203
PERS |  |
Assets: |  |
Short-term investments | 761 |
TOTAL ASSETS | 761 |
Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments | 42 | 52
Global equity securities | 2,347 | 2,144
Fixed-income securities | 2,323 | 2,077
TOTAL ASSETS | 4,734 | 4,291
Customer credit trust |  |
Assets: |  |
Short-term investments | 5 | 49
Global equity securities | 223 | 71
Fixed-income securities | 218 | 113
TOTAL ASSETS | 446 | 233
Rabbi trusts |  |
Assets: |  |
Short-term investments | 106 | 102
Global equity securities | 6 | 5
Life insurance contracts | 66 | 65
TOTAL ASSETS | 178 | 172
Long-term disability trust |  |
Assets: |  |
Short-term investments | 4 | 7
TOTAL ASSETS | 125 | 146
Electricity |  |
Assets: |  |
Price risk management instruments, netting | (3) | (1)
Price risk management instruments, assets | 341 | 410
Liabilities: |  |
Price risk management instruments, netting | (9) | (6)
Price risk management instruments, liabilities | 269 | 250
Gas |  |
Assets: |  |
Price risk management instruments, netting | (5) | 43
Price risk management instruments, assets | 7 | 46
Liabilities: |  |
Price risk management instruments, netting | (8) | (48)
Price risk management instruments, liabilities | 6 | 28
Level 1 |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 0 | 0
TOTAL ASSETS | 5,335 | 3,830
Liabilities: |  |
TOTAL LIABILITIES | 0 | 0
Level 1 | Short-term investments |  |
Assets: |  |
Short-term investments | 459 | 203
Level 1 | PERS |  |
Assets: |  |
Short-term investments | 761 |
TOTAL ASSETS | 761 |
Level 1 | Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments | 42 | 52
Global equity securities | 2,347 | 2,144
Fixed-income securities | 1,306 | 1,168
TOTAL ASSETS | 3,695 | 3,364
Level 1 | Customer credit trust |  |
Assets: |  |
Short-term investments | 5 | 49
Global equity securities | 223 | 71
Fixed-income securities | 76 | 29
TOTAL ASSETS | 304 | 149
Level 1 | Rabbi trusts |  |
Assets: |  |
Short-term investments | 106 | 102
Global equity securities | 6 | 5
Life insurance contracts | 0 | 0
TOTAL ASSETS | 112 | 107
Level 1 | Long-term disability trust |  |
Assets: |  |
Short-term investments | 4 | 7
TOTAL ASSETS | 4 | 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 | 40 | 10
TOTAL ASSETS | 1,265 | 1,068
Liabilities: |  |
TOTAL LIABILITIES | 107 | 119
Level 2 | Short-term investments |  |
Assets: |  |
Short-term investments | 0 | 0
Level 2 | PERS |  |
Assets: |  |
Short-term investments | 0 |
TOTAL ASSETS | 0 |
Level 2 | Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments | 0 | 0
Global equity securities | 0 | 0
Fixed-income securities | 1,017 | 909
TOTAL ASSETS | 1,017 | 909
Level 2 | Customer credit trust |  |
Assets: |  |
Short-term investments | 0 | 0
Global equity securities | 0 | 0
Fixed-income securities | 142 | 84
TOTAL ASSETS | 142 | 84
Level 2 | Rabbi trusts |  |
Assets: |  |
Short-term investments | 0 | 0
Global equity securities | 0 | 0
Life insurance contracts | 66 | 65
TOTAL ASSETS | 66 | 65
Level 2 | Long-term disability trust |  |
Assets: |  |
Short-term investments | 0 | 0
TOTAL ASSETS | 0 | 0
Level 2 | Electricity |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 28 | 7
Liabilities: |  |
Price risk management instruments, gross subject to netting | 93 | 43
Level 2 | Gas |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 12 | 3
Liabilities: |  |
Price risk management instruments, gross subject to netting | 14 | 76
Level 3 |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 316 | 404
TOTAL ASSETS | 316 | 404
Liabilities: |  |
TOTAL LIABILITIES | 185 | 213
Level 3 | Short-term investments |  |
Assets: |  |
Short-term investments | 0 | 0
Level 3 | PERS |  |
Assets: |  |
Short-term investments | 0 |
TOTAL ASSETS | 0 |
Level 3 | Nuclear decommissioning trusts |  |
Assets: |  |
Short-term investments | 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 | 0 | 0
Global equity securities | 0 | 0
Fixed-income securities | 0 | 0
TOTAL ASSETS | 0 | 0
Level 3 | Rabbi trusts |  |
Assets: |  |
Short-term investments | 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 | 0 | 0
TOTAL ASSETS | 0 | 0
Level 3 | Electricity |  |
Assets: |  |
Price risk management instruments, gross subject to netting | 316 | 404
Liabilities: |  |
Price risk management instruments, gross subject to netting | 185 | 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 | 22 | 18
Assets measured at NAV | Long-term disability trust |  |
Assets: |  |
Assets measured at NAV | $ 121 | $ 139

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