Commitments and Guarantees (Tables)

12 Months Ended

Dec. 31, 2018

Long-term Purchase Commitment [Line Items]

Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]

As of December 31, 2018, PGE’s estimated future minimum payments pursuant to purchase obligations for the following five years and thereafter are as follows (in millions):

	Payments Due
	2019		2020		2021		2022		2023		Thereafter		Total
Capital and other purchase commitments	$	143	$	9	$	1	$	1	$	1	$	58	$	213
Purchased power and fuel:
Electricity purchases	167		190		186		194		193		1,853		2,783
Capacity contracts	1		—		9		9		9		18		46
Public utility districts	12		11		9		8		8		35		83
Natural gas	54		42		31		31		30		208		396
Coal and transportation	6		—		—		—		—		—		6
Total	$	383	$	252	$	236	$	243	$	241	$	2,172	$	3,527

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 (PUDs) in the state of Washington:

• Grant County PUD for the Priest Rapids and Wanapum projects, and

• Douglas County PUD for the Wells project.

Under the agreements, the Company is required to pay its proportionate share of the operating and debt service costs of the hydroelectric projects whether they are operable or not. In addition, although PGE’s old agreement with Douglas County ended on August 31, 2018, a new contract became effective on September 1, 2018 that does not require contributions to Douglas County debt obligation or other costs, including the operation and maintenance costs of the projects. The new contract requires monthly payments for capacity that will not vary with annual project generation provided to PGE. The Company has estimated the capacity payments, which are subject to annual adjustments based on Douglas’ loads, and included the estimated amounts in the table above. The future minimum payments for the PUDs in the preceding table reflect the principal and capacity payments only and do not include interest, operation, or maintenance expenses.

Selected information regarding these projects is summarized as follows (dollars in millions):

	Capacity Charges and Revenue Bonds as of December 31, 2018		PGE’s Share as of December 31, 2018			Contract Expiration	PGE Capacity Charges and Debt Service Costs
			Output		Capacity		2018		2017		2016
					(in MW)
Priest Rapids and Wanapum	$	1,236	8.6	%	163	2052	$	17	$	16	$	16
Wells	757		9.0		135	2028	11		11		10

Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]

As of December 31, 2018, PGE’s estimated future minimum lease payments pursuant to capital, build-to-suit, and operating leases for the following five years and thereafter are as follows (in millions):

	Future Minimum Lease Payments
	Capital Leases		Build-to-Suit		Operating Leases
2019	$	6	$	11	$	4
2020	6		14		5
2021	6		13		5
2022	6		13		6
2023	5		13		7
Thereafter	67		225		97
Total minimum lease payments	96		$	289	$	124
Less imputed interest	47
Present value of net minimum lease payments	49
Less current portion	2
Non-current portion	$	47