Price Risk Management (Tables)

9 Months Ended

Sep. 30, 2011

Derivative [Line Items]

Schedule of Derivative Instruments [Table Text Block]

PGE’s net purchase volumes related to its Assets and Liabilities from price risk management activities resulting from its derivative transactions were as follows (in millions):

	September 30, 2011			December 31, 2010
Commodity contracts:
Electricity	13		MWh	9		MWh
Natural gas	82		Decatherms	93		Decatherms
Foreign currency	$	6	Canadian	$	7	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):

	September 30, 2011			December 31, 2010
Current assets:
Commodity contracts:
Electricity	$	2		$	4
Natural gas	7			9
Total current derivative assets	9		(1)	13		(1)
Noncurrent assets:
Commodity contracts:
Electricity	—			1
Natural gas	—			2
Total noncurrent derivative assets	—			3		(2)
Total derivative assets not designated as hedging instruments	$	9		$	16
Total derivative assets	$	9		$	16
Current liabilities:
Commodity contracts:
Electricity	$	73		$	77
Natural gas	123			111
Total current derivative liabilities	196			188
Noncurrent liabilities:
Commodity contracts:
Electricity	53			42
Natural gas	94			146
Total noncurrent derivative liabilities	147			188
Total derivative liabilities not designated as hedging instruments	$	343		$	376
Total derivative liabilities	$	343		$	376

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

(2) Included in Other noncurrent 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 on derivative transactions not designated as hedging instruments are classified in Purchased power and fuel, net of deferrals related to regulatory accounting, in the condensed consolidated statements of income and were as follows (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Commodity contracts:
Electricity	$	44	$	76	$	75	$	135
Natural Gas	30		72		41		181

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 September 30, 2011 related to PGE’s derivative activities would become realized as a result of the settlement of the underlying derivative instrument (in millions):

	2011		2012		2013		2014		2015		Total
Commodity contracts:
Electricity	$	21	$	61	$	29	$	11	$	2	$	124
Natural gas	33		110		53		13		1		210
Net unrealized loss	$	54	$	171	$	82	$	24	$	3	$	334

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 September 30, 2011 or December 31, 2010 were as follows:

	September 30, 2011		December 31, 2010
Assets from price risk management activities:
Counterparty A	18	%	23	%
Counterparty B	14		1
Counterparty C	12		5
Counterparty D	9		22
Counterparty E	3		11
Counterparty F	—		10
	56	%	72	%
Liabilities from price risk management activities:
Counterparty A	25	%	24	%
Counterparty G	10		12
	35	%	36	%