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Derivative Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Derivative Instruments |
Schedule of derivatives financial position | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022 | ​ | ​ | ​
​ | ​ | Derivative Assets | ​ | Derivative Liabilities | ​ | ​ | ​
(in millions) |  | Short-Term1 |  | Long-Term |  | Subtotal |  | Short-Term3 |  | Long-Term |  | Subtotal |  | Net Assets
Commodity derivative contracts |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Gross amounts recognized | ​ | $ | 459 | ​ | $ | — | ​ | $ | 459 | ​ | $ | 120 | ​ | $ | — | ​ | $ | 120 | ​ | $ | 339
Gross amounts offset in the consolidated balance sheets | ​ |  | (119) | ​ |  | — | ​ |  | (119) | ​ | ​ | (119) | ​ |  | — | ​ |  | (119) | ​ |  | —
Cash collateral received4 | ​ |  | (99) | ​ |  | ​ | ​ |  | (99) | ​ |  | ​ | ​ |  | ​ | ​ |  | — | ​ |  | (99)
Net amounts presented in the consolidated balance sheets | ​ | $ | 241 | ​ | $ | — | ​ | $ | 241 | ​ | $ | 1 | ​ | $ | — | ​ | $ | 1 | ​ | $ | 240
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021 | ​ | ​ | ​
​ | ​ | Derivative Assets | ​ | Derivative Liabilities | ​ | ​ | ​
(in millions) |  | Short-Term1 |  | Long-Term2 |  | Subtotal |  | Short-Term |  | Long-Term |  | Subtotal |  | Net Assets
Commodity derivative contracts |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Gross amounts recognized | ​ | $ | 70 | ​ | $ | 6 | ​ | $ | 76 | ​ | $ | 46 | ​ | $ | 2 | ​ | $ | 48 | ​ | $ | 28
Gross amounts offset in the consolidated balance sheets | ​ |  | (30) | ​ |  | (2) | ​ |  | (32) | ​ |  | (30) | ​ |  | (2) | ​ |  | (32) | ​ |  | —
Cash collateral posted4 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (16) | ​ |  | — | ​ |  | (16) | ​ |  | 16
Net amounts presented in the consolidated balance sheets | ​ | $ | 40 | ​ | $ | 4 | ​ | $ | 44 | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | 44
1 | Included in "Other current assets" on Edison International's and SCE's consolidated balance sheets.
2 | Included in "Other long-term assets" on Edison International's and SCE's consolidated balance sheets.
3 | Included in "Other current liabilities" on Edison International's and SCE's consolidated balance sheets.
4 | At December 31, 2022, SCE received cash collateral and accrued the obligation to return cash collateral totaled $99 million, all of which was offset against derivative assets. At December 31, 2021, SCE posted $65 million of cash, of which $16 million was offset against derivative liabilities and $49 million was reflected in "Other current assets" on the consolidated balance sheets.
Components of Economic Hedging Activity | The following table summarizes the components of SCE's economic hedging activity:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Years ended December 31,
(in millions) |  | ​ | 2022 | ​ | ​ | 2021 | ​ | ​ | 2020
Realized gains | ​ | $ | 178 | ​ | $ | 200 | ​ | $ | 87
Unrealized gains (losses) | ​ |  | 310 | ​ |  | (75) | ​ |  | 17
​
Notional Volumes of Derivative Instruments | The following table summarizes the notional volumes of derivatives used for SCE's economic hedging activities:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Economic Hedges
​ | ​ | Unit of | ​ | December 31,
Commodity |  | Measure |  | 2022 |  | 2021
Electricity options, swaps and forwards |  | GWh |  | 1,022 |  | 1,869
Natural gas options, swaps and forwards |  | Bcf |  | 42 |  | 58
Congestion revenue rights |  | GWh |  | 44,028 |  | 33,216

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