OPUC (Details 5) - Pipeline replacement cost recovery [Member] - OPUC [Member]	Sep. 29, 2017 USD ($)
Public Utilities, General Disclosures [Line Items]
Public utilities, requested rate increase (decrease), amount	$ 784,000
Public utilities, requested rate increase (decrease), percentage	1.20%

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.

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