Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues, net	$ 473	$ 479
Operating expenses:
Purchased power and fuel	192	195
Production and distribution	51	53
Administrative and other	54	54
Depreciation and amortization	62	62
Taxes other than income taxes	27	27
Total operating expenses	386	391
Income from operations	87	88
Other income:
Allowance for equity funds used during construction	2	1
Miscellaneous income, net	1	3
Other income	3	4
Interest expense	25	28
Income before income taxes	65	64
Income taxes	17	15
Net income and Comprehensive income	48	49
Less: net loss attributable to noncontrolling interest	(1)	0
Net income and Comprehensive income attributable to Portland General Electric Company	$ 49	$ 49
Weighted-average shares outstanding (in thousands):
Basic	75,608	75,423
Diluted	75,699	75,443
Earnings per share - basic and diluted	$ 0.65	$ 0.65
Dividends declared per common share	$ 0.270	$ 0.265