FAIR VALUE MEASUREMENTS - RECURRING FAIR VALUE MEASURES (Details) - Recurring - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | $ 904 | $ 879 |
Short-term investments held in Rabbi Trust | 47 | 67 |
Support Agreement, net of related guarantee fees | 23 | 23 |
Total | 1,305 | 1,168 |
Total | 46 | 226 |
Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 28 | 21 |
Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 325 | 312 |
Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 59 | 51 |
Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 270 | 275 |
Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 222 | 220 |
Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 551 | 546 |
Interest rate instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 223 | 87 |
Commodity contracts not subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 5 | 5 |
Effect of netting and allocation of collateral | 87 | 74 |
Derivative liabilities | 9 | 6 |
Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 10 | 11 |
Effect of netting and allocation of collateral | 6 | 22 |
Derivative liabilities | 54 | 230 |
Effect of netting and allocation of collateral | (26) | (19) |
Foreign exchange instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative liabilities | 9 | 9 |
Level 1 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 388 | 361 |
Short-term investments held in Rabbi Trust | 47 | 67 |
Support Agreement, net of related guarantee fees | 0 | 0 |
Total | 523 | 518 |
Total | 0 | 1 |
Level 1 | Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 24 | 19 |
Level 1 | Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 322 | 308 |
Level 1 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 42 | 34 |
Level 1 | Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 1 | Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 1 | Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 42 | 34 |
Level 1 | Interest rate instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Level 1 | Commodity contracts not subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Effect of netting and allocation of collateral | 87 | 74 |
Derivative liabilities | 0 | 0 |
Level 1 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Effect of netting and allocation of collateral | 1 | 16 |
Derivative liabilities | 26 | 20 |
Effect of netting and allocation of collateral | (26) | (19) |
Level 1 | Foreign exchange instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative liabilities | 0 | 0 |
Level 2 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 516 | 518 |
Short-term investments held in Rabbi Trust | 0 | 0 |
Support Agreement, net of related guarantee fees | 0 | 0 |
Total | 745 | 611 |
Total | 46 | 225 |
Level 2 | Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 4 | 2 |
Level 2 | Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 3 | 4 |
Level 2 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 17 | 17 |
Level 2 | Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 270 | 275 |
Level 2 | Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 222 | 220 |
Level 2 | Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 509 | 512 |
Level 2 | Interest rate instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 223 | 87 |
Level 2 | Commodity contracts not subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 5 | 5 |
Effect of netting and allocation of collateral | 0 | 0 |
Derivative liabilities | 9 | 6 |
Level 2 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 1 | 1 |
Effect of netting and allocation of collateral | 0 | 0 |
Derivative liabilities | 28 | 210 |
Effect of netting and allocation of collateral | 0 | 0 |
Level 2 | Foreign exchange instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative liabilities | 9 | 9 |
Level 3 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Short-term investments held in Rabbi Trust | 0 | 0 |
Support Agreement, net of related guarantee fees | 23 | 23 |
Total | 37 | 39 |
Total | 0 | 0 |
Level 3 | Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 3 | Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 3 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 3 | Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 3 | Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 3 | Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Level 3 | Interest rate instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Level 3 | Commodity contracts not subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Effect of netting and allocation of collateral | 0 | 0 |
Derivative liabilities | 0 | 0 |
Level 3 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 9 | 10 |
Effect of netting and allocation of collateral | 5 | 6 |
Derivative liabilities | 0 | 0 |
Effect of netting and allocation of collateral | 0 | 0 |
Level 3 | Foreign exchange instruments | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative liabilities | 0 | 0 |
SDG&E | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 904 | 879 |
Total | 918 | 910 |
Total | 4 | 1 |
SDG&E | Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 28 | 21 |
SDG&E | Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 325 | 312 |
SDG&E | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 59 | 51 |
SDG&E | Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 270 | 275 |
SDG&E | Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 222 | 220 |
SDG&E | Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 551 | 546 |
SDG&E | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 9 | 10 |
Effect of netting and allocation of collateral | 5 | 21 |
Derivative liabilities | 30 | 20 |
Effect of netting and allocation of collateral | (26) | (19) |
SDG&E | Level 1 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 388 | 361 |
Total | 388 | 376 |
Total | 0 | 1 |
SDG&E | Level 1 | Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 24 | 19 |
SDG&E | Level 1 | Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 322 | 308 |
SDG&E | Level 1 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 42 | 34 |
SDG&E | Level 1 | Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 1 | Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 1 | Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 42 | 34 |
SDG&E | Level 1 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Effect of netting and allocation of collateral | 0 | 15 |
Derivative liabilities | 26 | 20 |
Effect of netting and allocation of collateral | (26) | (19) |
SDG&E | Level 2 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 516 | 518 |
Total | 516 | 518 |
Total | 4 | 0 |
SDG&E | Level 2 | Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 4 | 2 |
SDG&E | Level 2 | Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 3 | 4 |
SDG&E | Level 2 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 17 | 17 |
SDG&E | Level 2 | Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 270 | 275 |
SDG&E | Level 2 | Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 222 | 220 |
SDG&E | Level 2 | Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 509 | 512 |
SDG&E | Level 2 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Effect of netting and allocation of collateral | 0 | 0 |
Derivative liabilities | 4 | 0 |
Effect of netting and allocation of collateral | 0 | 0 |
SDG&E | Level 3 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
Total | 14 | 16 |
Total | 0 | 0 |
SDG&E | Level 3 | Short-term investments, primarily cash equivalents | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 3 | Equity securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 3 | Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 3 | Municipal bonds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 3 | Other securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 3 | Total debt securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total nuclear decommissioning trusts | 0 | 0 |
SDG&E | Level 3 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 9 | 10 |
Effect of netting and allocation of collateral | 5 | 6 |
Derivative liabilities | 0 | 0 |
Effect of netting and allocation of collateral | 0 | 0 |
SoCalGas | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 2 | 2 |
Total | 24 | 210 |
SoCalGas | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 1 | 1 |
Effect of netting and allocation of collateral | 1 | 1 |
Derivative liabilities | 24 | 210 |
SoCalGas | Level 1 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 1 | 1 |
Total | 0 | 0 |
SoCalGas | Level 1 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Effect of netting and allocation of collateral | 1 | 1 |
Derivative liabilities | 0 | 0 |
SoCalGas | Level 2 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 1 | 1 |
Total | 24 | 210 |
SoCalGas | Level 2 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 1 | 1 |
Effect of netting and allocation of collateral | 0 | 0 |
Derivative liabilities | 24 | 210 |
SoCalGas | Level 3 | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Total | 0 | 0 |
Total | 0 | 0 |
SoCalGas | Level 3 | Commodity contracts subject to rate recovery | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Derivative assets | 0 | 0 |
Effect of netting and allocation of collateral | 0 | 0 |
Derivative liabilities | $ 0 | $ 0 |