Earnings Per Share (Notes)

3 Months Ended

Mar. 31, 2012

Earnings Per Share [Abstract]

EARNINGS PER SHARE

EARNINGS PER SHARE

Components of basic and diluted earnings per share were as follows:

	Three Months Ended March 31,
	2012		2011
Numerator (in millions):
Net income attributable to Portland General Electric Company common shareholders	$	49	$	69
Denominator (in thousands):
Weighted-average common shares outstanding - basic	75,423		75,318
Dilutive effect of unvested restricted stock units and  employee stock purchase plan shares	20		19
Weighted-average common shares outstanding - diluted	75,443		75,337
Earnings per share - basic and diluted	$	0.65	$	0.92

Unvested performance stock units and related dividend equivalent rights are not included in the computation of dilutive securities because vesting of these instruments is dependent upon three-year performance periods and the vesting criteria has not been met as of the end of the reporting period presented.

Basic and diluted earnings per share amounts are calculated based on actual amounts rather than the rounded amounts presented in the table above and on the condensed consolidated statements of income. Accordingly, calculations using the rounded amounts presented for net income and weighted average shares outstanding may yield results that vary from the earnings per share amounts presented in the table above.