Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues, net	$ 413	$ 411	$ 892	$ 895
Operating expenses:
Purchased power and fuel	156	169	351	363
Production and distribution	51	55	104	97
Administrative and other	56	51	110	103
Depreciation and amortization	63	55	125	111
Taxes other than income taxes	26	24	53	49
Total operating expenses	352	354	743	723
Income from operations	61	57	149	172
Other income (expense):
Allowance for equity funds used during construction	2	1	3	2
Miscellaneous income (expense), net	(1)	1	2	3
Other income, net	1	2	5	5
Interest expense	27	28	55	55
Income before income taxes	35	31	99	122
Income taxes	9	9	24	31
Net income and Net income attributable to Portland General Electric Company	26	22	75	91
Comprehensive income and Comprehensive income attributable to Portland General Electric Company	$ 26	$ 22	$ 75	$ 91
Weighted-average shares outstanding (in thousands):
Basic	75,507	75,326	75,465	75,322
Diluted	75,517	75,401	75,479	75,369
Earnings per share - basic and diluted	$ 0.34	$ 0.29	$ 0.99	$ 1.21
Dividends declared per common share	$ 0.27	$ 0.265	$ 0.535	$ 0.525