Commitments And Contingencies (Details) $ in Millions	1 Months Ended
Feb. 28, 2016 USD ($)
WASHINGTON \| Electricity [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 8.1

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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