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v3.25.4

Segmented Information (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($) Operations | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Total Revenues | $ 8,908 | $ 9,152 | $ 10,883
Number of reportable segments | Operations | 2 |  |
Number of geographic segments | Operations | 2 |  |
Segment reporting, CODM, profit (loss) measure,description | The CODMs evaluate the performance of each of the reportable segments based on Operating Income (Loss) which is also used to assess performance and allocate capital for these segments by comparing actual to historical results and forecasted financial information. |  |
Major Customers Accounting For More Than 10 Percent of Revenues [member] |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Major Customers | one | two | one
First Major Customer Accounting For More Than 10 Percent of Revenues [Member] |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Total Revenues | $ 1,016 | $ 3,310 | $ 1,976
Canada [Member] | Major Customers Accounting For More Than 10 Percent of Revenues [member] |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Total Revenues | 36 |  |
United States [Member] | Major Customers Accounting For More Than 10 Percent of Revenues [member] |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Total Revenues | $ 980 |  |

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