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financing costs | 6 Months Ended
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Jun. 30, 2026
financing costs |
financing costs |
9 | financing costs
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months | ​ | Six months
Periods ended June 30 (millions) | ​ ​ ​ | 2026 | ​ ​ ​ | 2025 | ​ ​ ​ | 2026 | ​ ​ ​ | 2025
Interest expense | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
From transactions that only involve the raising of finance | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Long-term debt, excluding lease liabilities and other (secured) | ​ | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​ | ​ | ​
Gross | ​ | $ | 327 | ​ | $ | 306 | ​ | $ | 655 | ​ | $ | 590
Capitalized 1 (Notes 17, 18(a)) |  | ​ | (3) | ​ |  | — |  | ​ | (6) | ​ | ​ | (9)
Net | ​ | ​ | 324 | ​ | ​ | 306 | ​ | ​ | 649 | ​ | ​ | 581
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Short-term borrowings and other |  | ​ | 17 | ​ |  | 12 |  | ​ | 30 | ​ | ​ | 29
Long-term debt prepayment premium (Note 26(e)) | ​ | ​ | 51 | ​ | ​ | — | ​ | ​ | 51 | ​ | ​ | —
​ | ​ | ​ | 392 | ​ | ​ | 318 | ​ | ​ | 730 | ​ | ​ | 610
From transactions that do not only involve the raising of finance | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Long-term debt – lease liabilities (Notes 19, 26(h)) | ​ | ​ | 41 | ​ |  | 42 |  | ​ | 84 | ​ | ​ | 83
Long-term debt – other (secured) (Note 26(g)) | ​ | ​ | 6 | ​ | ​ | 8 | ​ | ​ | 11 | ​ | ​ | 14
Employee defined benefit plans net interest (Note 15) |  | ​ | 4 | ​ |  | 3 |  | ​ | 7 | ​ | ​ | 6
Accretion on provisions (Note 25) | ​ | ​ | 5 | ​ | ​ | 7 | ​ | ​ | 13 | ​ | ​ | 14
​ | ​ | ​ | 56 | ​ | ​ | 60 | ​ | ​ | 115 | ​ | ​ | 117
​ | ​ | ​ | 448 | ​ | ​ | 378 | ​ | ​ | 845 | ​ | ​ | 727
Other | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Foreign exchange | ​ | ​ | (7) | ​ |  | 12 |  | ​ | (44) | ​ | ​ | 12
​ | ​ | ​ | 441 | ​ |  | 390 |  | ​ | 801 | ​ | ​ | 739
Interest income | ​ | ​ | (21) | ​ |  | (17) |  | ​ | (46) | ​ | ​ | (22)
​ | ​ | $ | 420 | ​ | $ | 373 |  | $ | 755 | ​ | $ | 717
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net interest cost | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 754 | ​ | $ | 720
Interest expense on long-term debt, excluding lease liabilities and other – capitalized 1 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | (6) | ​ | ​ | (9)
Employee defined benefit plans net interest | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 7 | ​ | ​ | 6
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 755 | ​ | $ | 717
​
1 | Interest on long-term debt, excluding lease liabilities, at a composite rate of 5.3% (2025 – 5.3%) was capitalized to property, plant and equipment assets under construction and to intangible assets with indefinite lives during the period.

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