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Price Risk Management (Tables)
 9 Months Ended
Sep. 30, 2014
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,
2014
 
December 31,
2013
 
Current assets:
 
 
 
 
Commodity contracts:
 
 
 
 
Electricity
$
2

 
$
9

 
Natural gas
2

 
4

 
Total current derivative assets
4

(1) 
13

(1) 
Noncurrent assets:
 
 
 
 
Commodity contracts:
 
 
 
 
Electricity
—

 
1

 
Natural gas
2

 
—

 
Total noncurrent derivative assets
2

(2) 
1

(2) 
Total derivative assets not designated as hedging instruments
$
6

 
$
14

 
Total derivative assets
$
6

 
$
14

 
Current liabilities:
 
 
 
 
Commodity contracts:
 
 
 
 
Electricity
$
29

 
$
20

 
Natural gas
15

 
29

 
Total current derivative liabilities
44

 
49

 
Noncurrent liabilities:
 
 
 
 
Commodity contracts:
 
 
 
 
Electricity
55

 
107

 
Natural gas
23

 
34

 
Total noncurrent derivative liabilities
78

 
141

 
Total derivative liabilities not designated as hedging instruments
$
122

 
$
190

 
Total derivative liabilities
$
122

 
$
190

 
(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, 2014
 
December 31, 2013
Commodity contracts:
 
 
 
 
 
Electricity
18

MWh
 
14

MWh
Natural gas
100

Decatherms
 
106

Decatherms
Foreign currency
$
8

Canadian
 
$
7

Canadian
Price Risk Management Assets and Liabilities Subject to Master Netting Agreements [Table Text Block]
Price risk management liabilities subject to master netting agreements is as follows (in millions):
 
 
 
 
 
 
 
Gross Amounts Not Offset in
 
 
 
Gross Amounts Recognized
 
Gross Amounts Offset
 
Net Amounts Presented
 
Condensed Consolidated
 
 
 
 
 
 
Balance Sheets
 
Net Amount
 
 
 
 
Derivatives
 
Cash Collateral(1)
 
As of September 30, 2014:
 
 
 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
 
 
 
Commodity contracts:
 
 
 
 
 
 
 
 
 
 
 
Electricity(2)
$
52

 
$
—

 
$
52

 
$
(52
)
 
$
—

 
$
—

Natural gas(2)
1

 
—

 
1

 
(1
)
 
—

 
—

 
$
53

 
$
—

 
$
53

 
$
(53
)
 
$
—

 
$
—

 
 
 
 
 
 
 
 
 
 
 
 
As of December 31, 2013:
 
 
 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
 
 
 
Commodity contracts:
 
 
 
 
 
 
 
 
 
 
 
Electricity(2)
$
91

 
$
—

 
$
91

 
$
(91
)
 
$
—

 
$
—

Natural gas(2)
1

 
—

 
1

 
(1
)
 
—

 
—

 
$
92

 
$
—

 
$
92

 
$
(92
)
 
$
—

 
$
—


(1)
As of September 30, 2014 and December 31, 2013, PGE had posted collateral in the amount of $9 million and $7 million, respectively, which consisted entirely of letters of credit.
(2)
Included in Liabilities from price risk management activities—current and Liabilities from price risk management activities—noncurrent.
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,
 
2014
 
2013
 
2014
 
2013
Commodity contracts:
 
 
 
 
 
 
 
Electricity
$
8

 
$
(1
)
 
$
(21
)
 
$
17

Natural Gas
25

 
10

 
(17
)
 
30


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, 2014 related to PGE’s derivative activities would become realized as a result of the settlement of the underlying derivative instrument (in millions):
 
2014
 
2015
 
2016
 
2017
 
2018
 
Thereafter
 
Total
Commodity contracts:
 
 
 
 
 
 
 
 
 
 
 
 
 
Electricity
$
4

 
$
28

 
$
13

 
$
5

 
$
4

 
$
28

 
$
82

Natural gas
6

 
10

 
12

 
5

 
1

 
—

 
34

Net unrealized loss
$
10

 
$
38

 
$
25

 
$
10

 
$
5

 
$
28

 
$
116
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,
2014
 
December 31,
2013
Assets from price risk management activities:
 
 
 
Counterparty A
37
%
 
53
%
Counterparty B
20

 
5

Counterparty C
11

 
—

 
68
%
 
58
%
Liabilities from price risk management activities:
 
 
 
Counterparty D
39
%
 
43
%
Counterparty E
15

 
11

 
54
%
 
54
%