Price Risk Management (Tables)

9 Months Ended

Sep. 30, 2016

Derivative [Line Items]

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

PGE’s Assets and Liabilities from price risk management activities consist of the following (in millions):

	September 30, 2016			December 31, 2015
Current assets:
Commodity contracts:
Electricity	$	2		$	7
Natural gas	3			3
Total current derivative assets	5		(1)	10		(1)
Noncurrent assets:
Commodity contracts:
Electricity	—			—
Natural gas	2			—
Total noncurrent derivative assets	2		(2)	—		(2)
Total derivative assets not designated as hedging instruments	$	7		$	10
Total derivative assets	$	7		$	10
Current liabilities:
Commodity contracts:
Electricity	$	11		$	36
Natural gas	55			94
Total current derivative liabilities	66			130
Noncurrent liabilities:
Commodity contracts:
Electricity	132			97
Natural gas	31			64
Total noncurrent derivative liabilities	163			161
Total derivative liabilities not designated as hedging instruments	$	229		$	291
Total derivative liabilities	$	229		$	291

(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 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 2035, were as follows (in millions):

	September 30, 2016			December 31, 2015
Commodity contracts:
Electricity	8		MWh	12		MWh
Natural gas	123		Decatherms	124		Decatherms
Foreign currency	$	21	Canadian	$	7	Canadian

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 recorded in Purchased power and fuel in the condensed consolidated statements of income and were as follows (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016			2015
Commodity contracts:
Electricity	$	8	$	7	$	60		$	77
Natural Gas	10		35		(14		)	79
Foreign currency exchange	—		—		(1		)	—

Net unrealized and certain net realized losses (gains) presented in the preceding table are offset within the condensed consolidated statements of income by the effects of regulatory accounting.

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, 2016 related to PGE’s derivative activities would become realized as a result of the settlement of the underlying derivative instrument (in millions):

	2016		2017		2018		2019		2020		Thereafter		Total
Commodity contracts:
Electricity	$	3	$	6	$	8	$	8	$	7	$	109	$	141
Natural gas	20		41		13		5		2		—		81
Net unrealized loss	$	23	$	47	$	21	$	13	$	9	$	109	$	222

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

Counterparties representing 10% or more of Assets and Liabilities from price risk management activities were as follows:

	September 30, 2016		December 31, 2015
Assets from price risk management activities:
Counterparty A	34	%	5	%
Counterparty B	12		8
Counterparty C	10		8
Counterparty D	7		10	%
Counterparty E	2		59	%
	65	%	90	%
Liabilities from price risk management activities:
Counterparty F	61	%	36	%
Counterparty C	8		10
Counterparty B	7		10
	76	%	56	%