Income Taxes Income Taxes (Policies)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

Income Taxes [Abstract]

Valuation Allowance, Commentary

PGE believes that it is more likely than not that its deferred income tax assets as of December 31, 2011 will be realized; accordingly, no valuation allowance has been recorded.

As of December 31, 2010, PGE believed the benefit from state credit carryforwards expiring in 2011 would not be realized and, in recognition of this risk, the Company recorded a valuation allowance of $2 million on the deferred tax assets relating to these state credit carryforwards.