Consolidated balance sheet (U.S. GAAP, unaudited) (Parenthetical) - CAD ($) shares in Thousands, $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Investments and long-term receivables, related party amount | [1] | $ 1,103 | $ 1,084 | ||||||||||||||||||||||||||||
| Long-term debt, related party amount | $ 3,447 | $ 3,447 | |||||||||||||||||||||||||||||
| Common shares authorized (in shares) | 1,100,000 | 1,100,000 | |||||||||||||||||||||||||||||
| Common shares outstanding (in shares) | 483,593 | 509,045 | |||||||||||||||||||||||||||||
| Related Party | |||||||||||||||||||||||||||||||
| Accounts receivable, net, related party amount | $ 399 | $ 756 | |||||||||||||||||||||||||||||
| Investments and long-term receivables, related party amount | 251 | 266 | |||||||||||||||||||||||||||||
| Long-term debt, related party amount | $ 3,447 | $ 3,447 | |||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||
| X | ||||||||||
- Definition Receivables, Net Of Accounts Payable And Accrued Liabilities, Current No definition available.
|
| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle) and amount due to the Entity from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such investments and receivables to an amount that approximates their net realizable value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|