Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues, net	$ 411	$ 415	$ 895	$ 864
Operating expenses:
Purchased power and fuel	169	186	363	410
Production and distribution	55	46	97	85
Administrative and other	51	48	103	93
Depreciation and amortization	55	57	111	114
Taxes other than income taxes	24	21	49	44
Total operating expenses	354	358	723	746
Income from operations	57	57	172	118
Other income (expense):
Allowance for equity funds used during construction	1	4	2	8
Miscellaneous income (expense), net	1	(3)	3	(2)
Other income, net	2	1	5	6
Interest expense	28	26	55	55
Income before income taxes	31	32	122	69
Income taxes	9	8	31	18
Net income and Net income attributable to Portland General Electric Company	$ 22	$ 24	$ 91	$ 51
Weighted-average shares outstanding (in thousands):
Basic	75,326	75,276	75,322	75,253
Diluted	75,401	75,290	75,369	75,268
Earnings per share:
Basic	$ 0.29	$ 0.32	$ 1.21	$ 0.68
Diluted	$ 0.29	$ 0.32	$ 1.21	$ 0.68
Dividends declared per common share	$ 0.265	$ 0.26	$ 0.525	$ 0.515