Commitments and Guarantees (Tables)

12 Months Ended

Dec. 31, 2015

Long-term Purchase Commitment [Line Items]

Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]

As of December 31, 2015, PGE’s estimated future minimum payments pursuant to purchase obligations for the following five years and thereafter are as follows (in millions):

	Payments Due
	2016		2017		2018		2019		2020		Thereafter		Total
Capital and other purchase commitments	$	85	$	2	$	2	$	2	$	9	$	27	$	127
Purchased power and fuel:
Electricity purchases	226		204		147		150		190		852		1,769
Capacity contracts	26		6		6		5		4		16		63
Public utility districts	6		5		5		1		1		12		30
Natural gas	67		41		38		37		32		221		436
Coal and transportation	14		11		5		5		—		—		35
Operating leases	10		10		9		7		6		180		222
Total	$	434	$	279	$	212	$	207	$	242	$	1,308	$	2,682

Schedule of Long-term Contracts for Purchase of Electric Power [Table Text Block]

PGE has long-term power purchase agreements with certain public utility districts in the state of Washington and with the City of Portland, Oregon. Under the agreements, the Company is required to pay its proportionate share of the operating and debt service costs of the hydroelectric projects whether or not they are operable. The future minimum payments for the public utility districts in the preceding table reflect the principal payment only and do not include interest, operation, or maintenance expenses. Selected information regarding these projects is summarized as follows (dollars in millions):

	Revenue Bonds as of December 31, 2015		PGE’s Share as of December 31, 2015			Contract Expiration	PGE Cost, including Debt Service
			Output		Capacity		2015		2014		2013
					(in MW)
Priest Rapids and Wanapum	$	1,191	8.6	%	163	2052	$	18	$	14	$	14
Wells	207		19.4		150	2018	10		10		10
Portland Hydro	2		100.0		36	2017	2		4		4