Price Risk Management (Tables)

3 Months Ended

Mar. 31, 2012

Derivative [Line Items]

Schedule of Derivative Instruments [Table Text Block]

PGE’s net volumes related to its Assets and Liabilities from price risk management activities resulting from its derivative transactions, which are expected to deliver or settle through 2016, were as follows (in millions):

	March 31, 2012			December 31, 2011
Commodity contracts:
Electricity	12		MWh	13		MWh
Natural gas	71		Decatherms	79		Decatherms
Foreign currency	$	7	Canadian	$	6	Canadian

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The fair value of PGE’s Assets and Liabilities from price risk management activities consists of the following (in millions):

	March 31, 2012			December 31, 2011
Current assets:
Commodity contracts:
Electricity	$	7		$	2
Natural gas	18			17
Total current derivative assets	25		(1)	19		(1)
Total derivative assets not designated as hedging instruments	$	25		$	19
Total derivative assets	$	25		$	19
Current liabilities:
Commodity contracts:
Electricity	$	90		$	66
Natural gas	152			150
Total current derivative liabilities	242			216
Noncurrent liabilities:
Commodity contracts:
Electricity	76			71
Natural gas	97			101
Total noncurrent derivative liabilities	173			172
Total derivative liabilities not designated as hedging instruments	$	415		$	388
Total derivative liabilities	$	415		$	388

(1) Included in Other current assets on the condensed consolidated balance sheets.

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

Net realized and unrealized losses (gains) on derivative transactions not designated as hedging instruments are classified in Purchased power and fuel in the condensed consolidated statements of income and were as follows (in millions):

	Three Months Ended March 31,
	2012		2011
Commodity contracts:
Electricity	$	53	$	31
Natural Gas	36		(6		)

Schedule of Price Risk Derivatives [Table Text Block]

Assuming no changes in market prices and interest rates, the following table indicates the year in which the net unrealized loss recorded as of March 31, 2012 related to PGE’s derivative activities would become realized as a result of the settlement of the underlying derivative instrument (in millions):

	2012		2013		2014		2015		Total
Commodity contracts:
Electricity	$	63	$	60	$	25	$	11	$	159
Natural gas	111		83		30		7		231
Net unrealized loss	$	174	$	143	$	55	$	18	$	390

Schedule of Concentration of Risk, by Counterparty [Table Text Block]

Counterparties representing 10% or more of Assets and Liabilities from price risk management activities as of March 31, 2012 or December 31, 2011 were as follows:

	March 31, 2012		December 31, 2011
Assets from price risk management activities:
Counterparty A	16	%	16	%
Counterparty B	12		19
Counterparty C	11		7
Counterparty D	8		13
	47	%	55	%
Liabilities from price risk management activities:
Counterparty C	22	%	23	%
Counterparty E	13		10
	35	%	33	%