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Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Pension and PBOP – net loss: |  |  |  |
Other | $ 0 | $ (1) | $ 0 | $ (1)
Accumulated Other Comprehensive Loss |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (53) | (56) | (56) | (58)
Pension and PBOP – net loss: |  |  |  |
Ending Balance | (51) | (55) | (51) | (55)
Accumulated Other Comprehensive Loss | Southern California Edison |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (20) | (26) | (22) | (28)
Pension and PBOP – net loss: |  |  |  |
Ending Balance | (19) | (25) | (19) | (25)
Accumulated Defined Benefit Plans Adjustment |  |  |  |
Pension and PBOP – net loss: |  |  |  |
Other comprehensive loss before reclassifications | 0 | 0 | 0 | (4)
Reclassified from accumulated other comprehensive loss | 2 | 2 | 5 | 8
Other | 0 | (1) | 0 | (1)
Change | 2 | 1 | 5 | 3
Accumulated Defined Benefit Plans Adjustment | Southern California Edison |  |  |  |
Pension and PBOP – net loss: |  |  |  |
Other comprehensive loss before reclassifications | 0 | 0 | 0 | (1)
Reclassified from accumulated other comprehensive loss | 1 | 1 | 3 | 4
Change | $ 1 | $ 1 | $ 3 | $ 3

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