Equity (Notes)

3 Months Ended

Mar. 31, 2013

Stockholders' Equity Note [Abstract]

Equity

EQUITY

The activity in equity during the three month periods ended March 31, 2013 and 2012 is as follows (dollars in millions):

	Portland General Electric Company Shareholders’ Equity
	Common Stock			Accumulated Other Comprehensive Loss			Retained Earnings			Noncontrolling Interests’ Equity
	Shares	Amount
Balances as of December 31, 2012	75,556,272	$	841	$	(6	)	$	893		$	2
Issuance of shares pursuant to equity-based plans	120,909	—		—			—			—
Dividends declared	—	—		—			(20		)	—
Net income (loss)	—	—		—			49			(1		)
Balances as of March 31, 2013	75,677,181	$	841	$	(6	)	$	922		$	1
Balances as of December 31, 2011	75,362,956	$	836	$	(6	)	$	833		$	3
Issuance of shares pursuant to equity-based plans	141,624	—		—			—			—
Dividends declared	—	—		—			(20		)	—
Net income	—	—		—			49			—
Balances as of March 31, 2012	75,504,580	$	836	$	(6	)	$	862		$	3