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Fair Value of Financial Instruments (Policies) | 6 Months Ended
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Jun. 30, 2011
Fair Value of Financial Instruments [Abstract] |
fair value determination [Policy Text Block] | The Company determines the fair value of financial instruments, both assets and liabilities recognized and not recognized in PGE’s condensed consolidated balance sheets, for which it is practicable to estimate fair value based on the following inputs as of June 30, 2011 and December 31, 2010:
• | Derivative instruments are recorded at fair value and are based on published market indices, which may be adjusted for market variables such as location pricing differences and/or the effects of liquidity at different locations. The Company also values certain derivative instruments using either standardized or internally developed models;
• | Certain trust assets, consisting of money market funds and fixed income securities included in the Nuclear decommissioning trust and marketable securities included in the Non-qualified benefit plan trust, are recorded at fair value and are based on quoted market prices; and
• | The fair value of long-term debt is estimated based on the quoted market prices for the same or similar issues or on the current rates offered to PGE for debt of similar remaining maturities.

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