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Derivative Instruments (Balance Sheet Disclosures) (Details) - Southern California Edison Company - Commodity derivative contracts - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Other current liabilities |  |
Net Liability |  |
Collateral received | $ 1 | $ 2
Electric Utility |  |
Derivative Assets |  |
Gross amounts recognized | 61 | 75
Gross amounts offset in the consolidated balance sheets | (2) | (1)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 59 | 74
Derivative Liabilities |  |
Gross amounts recognized | 1,060 | 1,158
Gross amounts offset in the consolidated balance sheets | (2) | (1)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 1,058 | 1,157
Net Liability |  |
Gross amounts recognized | 999 | 1,083
Gross amounts offset in the consolidated balance sheets | 0 | 0
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 999 | 1,083
Electric Utility | Derivative Assets, Short-Term |  |
Derivative Assets |  |
Gross amounts recognized | 60 | 74
Gross amounts offset in the consolidated balance sheets | (2) | (1)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 58 | 73
Electric Utility | Derivative Assets, Long-Term |  |
Derivative Assets |  |
Gross amounts recognized | 1 | 1
Gross amounts offset in the consolidated balance sheets | 0 | 0
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 1 | 1
Electric Utility | Derivative Liability, Short-Term |  |
Derivative Liabilities |  |
Gross amounts recognized | 192 | 217
Gross amounts offset in the consolidated balance sheets | (2) | (1)
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | 190 | 216
Electric Utility | Derivative Liability, Long-Term |  |
Derivative Liabilities |  |
Gross amounts recognized | 868 | 941
Gross amounts offset in the consolidated balance sheets | 0 | 0
Cash collateral posted | 0 | 0
Net amounts presented in the consolidated balance sheets | $ 868 | $ 941

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