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Leases Lease Obligations (Tables) | 12 Months Ended
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Dec. 31, 2021
Leases [Abstract] |
Lease, Cost [Table Text Block] | The components of lease cost were as follows (in millions):
| 2021 | 2020 |  |
Operating lease cost | $ | 8 |  | $ | 8 |  |  |
Finance lease cost: |  |  |  |
Amortization of right-of-use assets | $ | 7 |  | $ | 5 |  |  |
Interest on lease liabilities | 11 |  | 10 |  |  |
Total finance lease cost | $ | 18 |  | $ | 15 |  |  |
Variable lease cost | $ | 24 |  | $ | 12 |  |  |
Lease term and discount rates were as follows:
| December 31, 2021 |  | December 31, 2020
Weighted Average Remaining Lease Term (in years) |  |  |
Operating leases | 40 |  | 26
Finance leases | 23 |  | 28
Weighted Average Discount Rate |  |  |
Operating leases | 3.8 | % |  | 3.6 | %
Finance leases | 5 | % |  | 7.3 | %
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] | As of December 31, 2021, maturities of lease liabilities were as follows (in millions):
| Operating Leases |  | Finance Leases
2022 | $ | 4 |  |  | $ | 20 |
2023 | 4 |  |  | 18 |
2024 | 3 |  |  | 18 |
2025 | 1 |  |  | 25 |
2026 | 1 |  |  | 25 |
Thereafter | 43 |  |  | 377 |
Total lease payments | 56 |  |  | 483 |
Less imputed interest | (30) |  |  | (190) |
Total | $ | 26 |  |  | $ | 293 |
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] | Supplemental cash flow information related to leases for the years indicated was as follows (in millions):
| 2021 |  | 2020 |  | 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |
Operating cash flows from operating leases | $ | 8 |  |  | $ | 8 |  |  | $ | 7 |
Operating cash flows from finance leases | 11 |  |  | 10 |  |  | 5 |
Financing cash flows from finance leases | 6 |  |  | 6 |  |  | $ | 4 |
Right-of-use assets obtained in leasing arrangements: |  |  |  |  |
Operating leases | $ | (12) |  |  | $ | — |  |  | $ | 56 |
Finance leases | 153 |  |  | — |  |  | 154 |
In 2021, PGE entered into a hydroelectric power purchase agreement (PPA). The PPA modified an existing operating lease by effectively extending the term of the lease from 2024 to 2040 and increasing the capacity payments in the extension period. PGE reclassified the lease from operating to finance, and the Company recorded an additional lease liability and right-of-use (ROU) asset of approximately $141 million on PGE’s consolidated balance sheets. The energy portion of the PPA is considered variable and will not be included in the calculation of the lease liability and right-of-use asset. Any material differences between expense recognition and timing of lease payments will be deferred as a regulatory asset or liability in order to match what is anticipated to be recovered in customer prices for ratemaking purposes.

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- Definition Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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