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Derivative Instruments (Tables) | 9 Months Ended
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Sep. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Gross and Net Fair Values of Commodity Derivative Instruments | The following table summarizes the gross and net fair values of SCE's commodity derivative instruments:
| September 30, 2025
(in millions) | Derivative Assets Short-Term 1 |  | Derivative Liabilities Short-Term 2
Commodity derivative contracts |  |  |
Gross amounts recognized | $ | 140 |  |  | $ | 86 |
Gross amounts offset in the condensed consolidated balance sheets | (3) |  |  | (3) |
Cash collateral posted | — |  |  | (83) |
Net amounts presented in the condensed consolidated balance sheets | $ | 137 |  |  | $ | — |
| December 31, 2024
(in millions) | Derivative Assets Short-Term 1 |  | Derivative Liabilities Short-Term 2
Commodity derivative contracts |  |  |
Gross amounts recognized | $ | 213 |  |  | $ | 47 |
Gross amounts offset in the condensed consolidated balance sheets | (1) |  |  | (1) |
Cash collateral posted | — |  |  | (46) |
Net amounts presented in the condensed consolidated balance sheets | $ | 212 |  |  | $ | — |
1 Included in "Other current assets" on SCE's condensed consolidated balance sheets. 2 Included in "Other current liabilities" on SCE's condensed consolidated balance sheets.
Schedule of Gains/(Losses) of Economic Hedging Activity | The following table summarizes the gains/(losses) of SCE's economic hedging activity:
| Three months ended September 30, |  | Nine months ended September 30,
(in millions) | 2025 |  | 2024 |  | 2025 |  | 2024
Realized | $ | (37) |  |  | $ | (187) |  |  | $ | (81) |  |  | $ | (313) |
Unrealized | (122) |  |  | (19) |  |  | (111) |  |  | (56) |
Schedule of Notional Volumes of Derivative Instruments | The following table summarizes the notional volumes of derivatives used for SCE's economic hedging activities:
Commodity | Unit of Measure |  | Economic Hedges
September 30, 2025 |  | December 31, 2024
Electricity options, swaps and forwards | Gigawatt hours |  | 5,679 |  | 3,295
Natural gas options, swaps and forwards | Billion cubic feet |  | 8 |  | 4
Congestion revenue rights | Gigawatt hours |  | 4,973 |  | 8,141
Fin Toll arrangements | Gigawatt hours |  | 236 |  | —

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A + Details
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