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Revenue Recognition (Policies)	9 Months Ended
Revenue Recognition (Policies)	Sep. 30, 2019
Revenue Recognition and Deferred Revenue [Abstract]
Revenue Recognition, Multiple-deliverable Arrangements, Description [Policy Text Block]	Certain contracts with customers, primarily wholesale, may include multiple performance obligations. For such arrangements, PGE allocates revenue to each performance obligation based on its relative standalone selling price. PGE generally determines standalone selling prices based on the prices charged to customers.