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Leases (Notes) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Lessee, Finance Leases [Text Block] | LEASESPGE determines if an arrangement is a lease at inception and whether the arrangement is classified as an operating or finance lease. At commencement of the lease, PGE records a right-of-use (ROU) asset and lease liability in the consolidated balance sheets based on the present value of lease payments over the term of the arrangement. ROU assets represent the right to use an underlying asset for the lease term and lease liabilities represent PGE's obligation to make lease payments arising from the lease. If the implicit rate is not readily determinable in the contract, PGE uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. Contract terms may include options to extend or terminate the lease, and, when the Company deems it is reasonably certain that PGE will exercise that option, it is included in the ROU asset and lease liability. Operating leases reflect lease expense on a straight-line basis, while finance leases result in the separate presentation of interest expense on the lease liability and amortization expense of the ROU asset. Any material differences between expense recognition and timing of payments is deferred as a regulatory asset or liability in order to match what is being recovered in customer prices for ratemaking purposes. PGE does not record leases with a term of 12-months or less in the consolidated balance sheets. Total short-term lease costs as of December 31, 2020 are immaterial. PGE has lease agreements with lease and non-lease components, which are accounted for separately. The Company’s leases relate primarily to the use of land, support facilities, gas storage, and power purchase agreements that rely on identified plant. Variable payments are generally related to gas storage and power purchase agreements for components dependent upon variable factors, such as energy production and property taxes, and are not included in the determination of the present value of lease payments. The components of lease cost were as follows (in millions):
| 2020 | 2019 |  |
Operating lease cost | $ | 8 |  | $ | 7 |  |  |
Finance lease cost: |  |  |  |
Amortization of right-of-use assets | $ | 5 |  | $ | 3 |  |  |
Interest on lease liabilities | 10 |  | 6 |  |  |
Total finance lease cost | $ | 15 |  | $ | 9 |  |  |
Variable lease cost | $ | 12 |  | $ | 19 |  |  |
Supplemental information related to amounts and presentation of leases in the consolidated balance sheets is presented below (in millions):
| Balance Sheet Classification | December 31, 2020 | December 31, 2019
Operating Leases: |  |  |
Operating lease right-of-use assets | Other noncurrent assets | $ | 44 |  | $ | 51 |
Current liabilities | Accrued expenses and other current liabilities | $ | 8 |  | $ | 8 |
Noncurrent liabilities | Other noncurrent liabilities | 36 |  | 43 |
Total operating lease liabilities* |  | $ | 44 |  | $ | 51 |
Finance Leases: |  |  |
Finance lease right-of-use assets | Electric utility plant, net | $ | 145 |  | $ | 150 |
Current liabilities | Current portion of finance lease obligations | $ | 16 |  | $ | 16 |
Noncurrent liabilities | Finance lease obligations, net of current portion | 129 |  | 135 |
Total finance lease liabilities |  | $ | 145 |  | $ | 151 |
*Included in lease liabilities are $25 million and $32 million related to power purchase agreements for the years ended December 31, 2020 and 2019, respectively. Lease term and discount rates were as follows:
| December 31, 2020 |  | December 31, 2019
Weighted Average Remaining Lease Term (in years) |  |  |
Operating leases | 26 |  | 24
Finance leases | 28 |  | 29
Weighted Average Discount Rate |  |  |
Operating leases | 3.6 | % |  | 3.5 | %
Finance leases | 7.3 | % |  | 7.3 | %
PGE’s gas storage finance lease contains five 10-year renewal periods which have not been included in the finance lease obligation. As of December 31, 2020, maturities of lease liabilities were as follows (in millions):
| Operating Leases |  | Finance Leases
2021 | $ | 8 |  |  | $ | 16 |
2022 | 8 |  |  | 16 |
2023 | 8 |  |  | 14 |
2024 | 7 |  |  | 14 |
2025 | 1 |  |  | 13 |
Thereafter | 45 |  |  | 222 |
Total lease payments | 77 |  |  | 295 |
Less imputed interest | (33) |  |  | (150) |
Total | $ | 44 |  |  | $ | 145 |
Supplemental cash flow information related to leases was as follows (in millions):
| December 31, 2020 |  | December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows from operating leases | $ | 8 |  |  | $ | 7 |
Operating cash flows from finance leases | 10 |  |  | 5 |
Financing cash flows from finance leases | 6 |  |  | 4 |
Right-of-use assets obtained in leasing arrangements: |  |  |
Operating leases | $ | — |  |  | $ | 56 |
Finance leases | — |  |  | 154 |
As of December 31, 2020, PGE has an additional operating lease for an energy storage agreement that has not yet commenced with an estimated present value of future lease payments of $30 million. This lease is expected to commence in 2022 with a lease term of 20 years.

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- Definition The entire disclosure for finance leases of lessee. Includes, but is not limited to, description of lessee's finance lease and maturity analysis of finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 + Details
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