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Derivative Instruments (Balance Sheet Disclosures) (Details) - Southern California Edison Company - Electric Utility - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Economic Hedges |  |
Derivative Assets |  |
Cash collateral posted | $ (52) |
Other current assets | Economic Hedges |  |
Derivative Assets |  |
Cash collateral posted | (22) | $ (24)
Commodity derivative contracts |  |
Derivative Assets |  |
Gross amounts recognized | 58 | 102
Gross amounts offset in the consolidated balance sheets | (6) | (15)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 52 | 87
Derivative Liabilities |  |
Gross amounts recognized | 55 | 16
Gross amounts offset in the consolidated balance sheets | (6) | (15)
Cash collateral posted | (30) | 0
Net amounts presented in the consolidated balance sheets | 19 | 1
Net Assets |  |
Gross amounts recognized | 3 | 86
Gross amounts offset in the consolidated balance sheets | 0 | 0
Cash collateral posted | 30 | 0
Net amounts presented in the consolidated balance sheets | 33 | 86
Commodity derivative contracts | Derivative Assets, Short-Term |  |
Derivative Assets |  |
Gross amounts recognized | 57 | 94
Gross amounts offset in the consolidated balance sheets | (6) | (13)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 51 | 81
Commodity derivative contracts | Derivative Assets, Long-Term |  |
Derivative Assets |  |
Gross amounts recognized | 1 | 8
Gross amounts offset in the consolidated balance sheets | 0 | (2)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 1 | 6
Commodity derivative contracts | Derivative Liability, Short-Term |  |
Derivative Liabilities |  |
Gross amounts recognized | 55 | 14
Gross amounts offset in the consolidated balance sheets | (6) | (13)
Cash collateral posted | (30) | 0
Net amounts presented in the consolidated balance sheets | 19 | 1
Commodity derivative contracts | Derivative Liability, Long-Term |  |
Derivative Liabilities |  |
Gross amounts recognized | 0 | 2
Gross amounts offset in the consolidated balance sheets | 0 | (2)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | $ 0 | $ 0

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