Price Risk Management (Tables)

3 Months Ended

Mar. 31, 2019

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):

	March 31, 2019		December 31, 2018
Current assets:
Commodity contracts:
Electricity	$	17	$	11
Natural gas	16		7
Total current derivative assets*	33		18
Noncurrent assets:
Commodity contracts:
Electricity	1		1
Natural gas	3		1
Total noncurrent derivative assets	4		2
Total derivative assets not designated as hedging instruments	$	37	$	20
Total derivative assets	$	37	$	20
Current liabilities:
Commodity contracts:
Electricity	$	12	$	16
Natural gas	20		35
Total current derivative liabilities	32		51
Noncurrent liabilities:
Commodity contracts:
Electricity	63		78
Natural gas	15		23
Total noncurrent derivative liabilities	78		101
Total derivative liabilities not designated as hedging instruments	$	110	$	152
Total derivative liabilities	$	110	$	152

* Included in Other current 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 at various dates through 2035, were as follows (in millions):

	March 31, 2019			December 31, 2018
Commodity contracts:
Electricity	7		MWh	5		MWh
Natural gas	134		Decatherms	123		Decatherms
Foreign currency	$	20	Canadian	$	18	Canadian

Derivatives Not Designated as Hedging Instruments [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 comprehensive income and were as follows (in millions):

	Three Months Ended March 31,
	2019			2018
Commodity contracts:
Electricity	$	(24	)	$	1
Natural Gas	(25		)	14

Net unrealized and certain net realized losses (gains) presented in the table above are offset within the condensed consolidated statements of income and comprehensive 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 March 31, 2019 related to PGE’s derivative activities would become realized as a result of the settlement of the underlying derivative instrument (in millions):

	2019			2020		2021		2022		2023		Thereafter		Total
Commodity contracts:
Electricity	$	(6	)	$	5	$	6	$	5	$	6	$	41	$	57
Natural gas	8			3		4		1		—		—		16
Net unrealized loss	$	2		$	8	$	10	$	6	$	6	$	41	$	73

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:

	March 31, 2019		December 31, 2018
Assets from price risk management activities:
Counterparty A	33	%	42	%
Counterparty B	11		15
Counterparty C	13		9
	57	%	66	%
Liabilities from price risk management activities:
Counterparty D	62	%	56	%
	62	%	56	%