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v3.25.4

Acquisitions and Divestitures (Narrative) (Details) $ in Millions, $ in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 31, 2025 USD ($) a | Jan. 31, 2025 CAD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Acquisitions and Divestitures [Line Items] |  |  |  |  |
Proceeds from divestitures |  |  | $ 1,927 | $ 163 | $ 772
Acquisitions |  |  | 2,537 | 205 | 277
Litigation settlement, amounts awarded |  |  |  | 156 |
Other Nonoperating Income (Expense) [Member] |  |  |  |  |
Acquisitions and Divestitures [Line Items] |  |  |  |  |
Litigation settlement, amounts awarded |  |  |  | 156 |
Montney Acquisition [Member] |  |  |  |  |
Acquisitions and Divestitures [Line Items] |  |  |  |  |
Proceeds from divestitures |  | $ 3,280 |  |  |
Number of acres acquired | a | 109,000 |  |  |  |
Cash paid for acquisition | $ 2,274 |  |  |  |
Asset retirement obligation | 146 |  |  |  |
Operating lease assets and lease liabilities | 396 |  |  |  |
Montney Acquisition [Member] | Proved Properties [Member] |  |  |  |  |
Acquisitions and Divestitures [Line Items] |  |  |  |  |
Property, plant and equipment, net | 2,292 |  |  |  |
Montney Acquisition [Member] | Unproved Properties [Member] |  |  |  |  |
Acquisitions and Divestitures [Line Items] |  |  |  |  |
Property, plant and equipment, net | $ 128 |  |  |  |
USA Operations [Member] | Operating Segments [Member] |  |  |  |  |
Acquisitions and Divestitures [Line Items] |  |  |  |  |
Proceeds from divestitures |  |  | 1,923 |  |
Acquisitions |  |  | 260 | $ 200 | 271
USA Operations [Member] | Operating Segments [Member] | Uinta and Bakken Assets [Member] |  |  |  |  |
Acquisitions and Divestitures [Line Items] |  |  |  |  |
Proceeds from divestitures |  |  | $ 1,906 |  | $ 734

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