Commitments and Contingencies (Wildfire Insurance) (Details) - SCE $ in Millions	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Threshold for wildfire claims	$ 1,000
Self insurance retention per wildfire occurrence	$ 10

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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