Debt (Schedule of Issuances and Repayments of Commercial Paper) (Details) $ in Millions, $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
|
Dec. 31, 2025
CAD ($)
|
Dec. 31, 2024
CAD ($)
|
Dec. 31, 2023
CAD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
|
|
| Commercial Paper | |||||
| Commercial paper, maximum borrowing capacity | $ 2,500 | ||||
| Commercial paper, outstanding | $ 124 | $ 721 | $ 90 | $ 501 | |
| Commercial paper, weighted average interest rate | 3.79% | 4.73% | 3.79% | 4.73% | |
| Commercial paper, maturity | 90 days | ||||
| Issuances and repayments of commercial paper | |||||
| Change in commercial paper, net | $ (612) | $ (1,381) | $ 908 | ||
| Maturity Less Than Ninety Days | |||||
| Issuances and repayments of commercial paper | |||||
| Issuance | 25,471 | 18,564 | 13,767 | ||
| Repayment | (25,859) | (19,851) | (13,090) | ||
| Change in commercial paper, net | (388) | (1,287) | 677 | ||
| Maturity Greater than 90 Days | |||||
| Issuances and repayments of commercial paper | |||||
| Issuance | 0 | 1,682 | 1,871 | ||
| Repayment | (224) | (1,776) | (1,640) | ||
| Change in commercial paper, net | $ (224) | $ (94) | $ 231 | ||