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Description of Business and Segmented Disclosures - Schedule of Segment and Operational Information (Details) - CAD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenues |  |  |  |  |
Gross Sales |  | $ 14,053 | $ 14,748 | $ 41,198 | $ 43,999
Less: Royalties |  | (858) | (929) | (2,385) | (2,535)
Revenues | [1] | 13,195 | 13,819 | 38,813 | 41,464
Expenses |  |  |  |  |
Purchased Product |  | 6,140 | 7,126 | 18,100 | 19,806
Transportation and Blending |  | 2,405 | 2,489 | 7,856 | 7,929
Purchased Product, Transportation and Blending | [1] | 8,545 | 9,615 | 25,956 | 27,735
Operating |  | 1,594 | 1,736 | 4,971 | 5,214
(Gain) Loss on Risk Management |  | (2) | (20) | (79) | 42
Depreciation, Depletion and Amortization |  | 1,322 | 1,218 | 3,820 | 3,646
Exploration Expense |  | 1 | 44 | 9 | 56
(Income) Loss From Equity-Accounted Affiliates |  | (9) | (11) | (45) | (48)
Segment Income (Loss) |  | 1,744 | 1,237 | 4,181 | 4,819
General and Administrative |  | 220 | 172 | 570 | 593
Finance Costs, Net |  | 154 | 118 | 404 | 394
Integration, Transaction and Other Costs |  | 44 | 41 | 123 | 113
Foreign Exchange (Gain) Loss, Net |  | 157 | (73) | (196) | 81
(Gain) Loss on Divestiture of Assets |  | (106) | (17) | (109) | (121)
Re-measurement of Contingent Payments |  | 0 | 0 | 0 | 30
Other (Income) Loss, Net |  | (22) | (28) | (54) | (158)
Total Non-operating (Income) Expense |  | 447 | 213 | 738 | 932
Earnings (Loss) Before Income Tax |  | 1,297 | 1,024 | 3,443 | 3,887
Income Tax Expense (Recovery) |  | 11 | 204 | 447 | 891
Net Earnings (Loss) |  | 1,286 | 820 | 2,996 | 2,996
External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 14,053 | 14,748 | 41,198 | 43,999
Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 0 | 0 | 0 | 0
Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 17 | (27) | (14) | 11
Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | (19) | 7 | (65) | 31
Upstream |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 7,562 | 8,259 | 24,208 | 24,838
Less: Royalties |  | (858) | (929) | (2,385) | (2,535)
Revenues |  | 6,704 | 7,330 | 21,823 | 22,303
Expenses |  |  |  |  |
Purchased Product |  | 674 | 1,088 | 2,952 | 2,674
Transportation and Blending |  | 2,543 | 2,661 | 8,411 | 8,515
Operating |  | 885 | 860 | 2,674 | 2,647
Operating Margin |  | 2,590 | 2,731 | 7,775 | 8,451
Depreciation, Depletion and Amortization |  | 1,098 | 1,027 | 3,141 | 3,081
Exploration Expense |  | 1 | 44 | 9 | 56
(Income) Loss From Equity-Accounted Affiliates |  | (9) | (11) | (61) | (47)
Segment Income (Loss) |  | 1,518 | 1,670 | 4,696 | 5,364
Upstream | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 5,774 | 6,052 | 17,981 | 18,590
Upstream | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 1,788 | 2,207 | 6,227 | 6,248
Upstream | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 12 | (10) | 11 | 16
Upstream | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | (18) | 1 | (10) | (3)
Downstream |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 8,435 | 8,798 | 23,883 | 25,781
Less: Royalties |  | 0 | 0 | 0 | 0
Revenues |  | 8,435 | 8,798 | 23,883 | 25,781
Expenses |  |  |  |  |
Purchased Product |  | 7,321 | 8,207 | 21,281 | 22,888
Transportation and Blending |  | 0 | 0 | 0 | 0
Operating |  | 751 | 918 | 2,552 | 2,804
Operating Margin |  | 364 | (323) | 56 | 84
Depreciation, Depletion and Amortization |  | 200 | 164 | 606 | 485
Exploration Expense |  | 0 | 0 | 0 | 0
(Income) Loss From Equity-Accounted Affiliates |  | 0 | 0 | 0 | 0
Segment Income (Loss) |  | 161 | (492) | (545) | (404)
Downstream | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 8,279 | 8,696 | 23,217 | 25,409
Downstream | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 156 | 102 | 666 | 372
Downstream | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 1 | 4 | (6) | 5
Downstream | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | (3) | (5) | (5) | 3
Oil Sands | Upstream |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 6,748 | 7,175 | 21,115 | 21,356
Less: Royalties |  | (831) | (889) | (2,281) | (2,400)
Revenues |  | 5,917 | 6,286 | 18,834 | 18,956
Expenses |  |  |  |  |
Purchased Product |  | 507 | 629 | 1,995 | 1,321
Transportation and Blending |  | 2,452 | 2,579 | 8,138 | 8,265
Operating |  | 655 | 621 | 2,032 | 1,896
Operating Margin |  | 2,293 | 2,467 | 6,659 | 7,451
Depreciation, Depletion and Amortization |  | 867 | 784 | 2,450 | 2,330
Exploration Expense |  | 1 | 2 | 7 | 6
(Income) Loss From Equity-Accounted Affiliates |  | 0 | 0 | (38) | (14)
Segment Income (Loss) |  | 1,437 | 1,682 | 4,243 | 5,142
Oil Sands | Upstream | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 5,177 | 5,456 | 15,874 | 16,525
Oil Sands | Upstream | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 1,571 | 1,719 | 5,241 | 4,831
Oil Sands | Upstream | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 10 | (10) | 10 | 23
Oil Sands | Upstream | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | (12) | (1) | (3) | (13)
Conventional | Upstream |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 429 | 713 | 1,922 | 2,283
Less: Royalties |  | (12) | (15) | (44) | (61)
Revenues |  | 417 | 698 | 1,878 | 2,222
Expenses |  |  |  |  |
Purchased Product |  | 161 | 459 | 951 | 1,353
Transportation and Blending |  | 86 | 80 | 259 | 241
Operating |  | 127 | 147 | 369 | 432
Operating Margin |  | 41 | 12 | 298 | 203
Depreciation, Depletion and Amortization |  | 125 | 109 | 362 | 330
Exploration Expense |  | 0 | 0 | 0 | 0
(Income) Loss From Equity-Accounted Affiliates |  | 0 | 0 | 1 | 1
Segment Income (Loss) |  | (78) | (99) | (58) | (138)
Conventional | Upstream | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 212 | 225 | 936 | 866
Conventional | Upstream | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 217 | 488 | 986 | 1,417
Conventional | Upstream | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 2 | 0 | 1 | (7)
Conventional | Upstream | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | (6) | 2 | (7) | 10
Offshore | Upstream |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 385 | 371 | 1,171 | 1,199
Less: Royalties |  | (15) | (25) | (60) | (74)
Revenues |  | 370 | 346 | 1,111 | 1,125
Expenses |  |  |  |  |
Purchased Product |  | 6 | 0 | 6 | 0
Transportation and Blending |  | 5 | 2 | 14 | 9
Operating |  | 103 | 92 | 273 | 319
Operating Margin |  | 256 | 252 | 818 | 797
Depreciation, Depletion and Amortization |  | 106 | 134 | 329 | 421
Exploration Expense |  | 0 | 42 | 2 | 50
(Income) Loss From Equity-Accounted Affiliates |  | (9) | (11) | (24) | (34)
Segment Income (Loss) |  | 159 | 87 | 511 | 360
Offshore | Upstream | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 385 | 371 | 1,171 | 1,199
Offshore | Upstream | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 0 | 0 | 0 | 0
Offshore | Upstream | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 0 | 0 | 0 | 0
Offshore | Upstream | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 0 | 0 | 0 | 0
Canadian Refining | Downstream |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 1,353 | 1,580 | 3,923 | 4,047
Less: Royalties |  | 0 | 0 | 0 | 0
Revenues |  | 1,353 | 1,580 | 3,923 | 4,047
Expenses |  |  |  |  |
Purchased Product |  | 1,102 | 1,353 | 3,218 | 3,415
Transportation and Blending |  | 0 | 0 | 0 | 0
Operating |  | 140 | 167 | 419 | 759
Operating Margin |  | 111 | 60 | 286 | (127)
Depreciation, Depletion and Amortization |  | 40 | 49 | 139 | 147
Exploration Expense |  | 0 | 0 | 0 | 0
(Income) Loss From Equity-Accounted Affiliates |  | 0 | 0 | 0 | 0
Segment Income (Loss) |  | 71 | 11 | 147 | (274)
Canadian Refining | Downstream | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 1,198 | 1,482 | 3,259 | 3,682
Canadian Refining | Downstream | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 155 | 98 | 664 | 365
Canadian Refining | Downstream | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 0 | 0 | 0 | 0
Canadian Refining | Downstream | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 0 | 0 | 0 | 0
U.S Refining | Downstream |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 7,082 | 7,218 | 19,960 | 21,734
Less: Royalties |  | 0 | 0 | 0 | 0
Revenues |  | 7,082 | 7,218 | 19,960 | 21,734
Expenses |  |  |  |  |
Purchased Product |  | 6,219 | 6,854 | 18,063 | 19,473
Transportation and Blending |  | 0 | 0 | 0 | 0
Operating |  | 611 | 751 | 2,133 | 2,045
Operating Margin |  | 253 | (383) | (230) | 211
Depreciation, Depletion and Amortization |  | 160 | 115 | 467 | 338
Exploration Expense |  | 0 | 0 | 0 | 0
(Income) Loss From Equity-Accounted Affiliates |  | 0 | 0 | 0 | 0
Segment Income (Loss) |  | 90 | (503) | (692) | (130)
U.S Refining | Downstream | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 7,081 | 7,214 | 19,958 | 21,727
U.S Refining | Downstream | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 1 | 4 | 2 | 7
U.S Refining | Downstream | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | (1) | (4) | (6) | 5
U.S Refining | Downstream | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 3 | 5 | (5) | 3
Corporate and Eliminations |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | (1,944) | (2,309) | (6,893) | (6,620)
Less: Royalties |  | 0 | 0 | 0 | 0
Revenues |  | (1,944) | (2,309) | (6,893) | (6,620)
Expenses |  |  |  |  |
Purchased Product |  | (1,855) | (2,169) | (6,133) | (5,756)
Transportation and Blending |  | (138) | (172) | (555) | (586)
Purchased Product, Transportation and Blending |  | (1,993) | (2,341) | (6,688) | (6,342)
Operating |  | (42) | (42) | (255) | (237)
Depreciation, Depletion and Amortization |  | 24 | 27 | 73 | 80
Exploration Expense |  | 0 | 0 | 0 | 0
(Income) Loss From Equity-Accounted Affiliates |  | 0 | 0 | 16 | (1)
Segment Income (Loss) |  | 65 | 59 | 30 | (141)
General and Administrative |  | 220 | 172 | 570 | 593
Finance Costs, Net |  | 154 | 118 | 404 | 394
Integration, Transaction and Other Costs |  | 44 | 41 | 123 | 113
Foreign Exchange (Gain) Loss, Net |  | 157 | (73) | (196) | 81
(Gain) Loss on Divestiture of Assets |  | (106) | (17) | (109) | (121)
Re-measurement of Contingent Payments |  |  |  | 0 | 30
Other (Income) Loss, Net |  | (22) | (28) | (54) | (158)
Total Non-operating (Income) Expense |  | 447 | 213 | 738 | 932
Corporate and Eliminations | External Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | 0 | 0 | 0 | 0
Corporate and Eliminations | Intersegment Sales |  |  |  |  |
Revenues |  |  |  |  |
Gross Sales |  | (1,944) | (2,309) | (6,893) | (6,620)
Corporate and Eliminations | Realized (Gain) Loss |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | 6 | (13) | (19) | (10)
Corporate and Eliminations | Unrealized (Gain) Loss on Risk Management |  |  |  |  |
Expenses |  |  |  |  |
(Gain) Loss on Risk Management |  | $ (4) | $ 1 | $ (50) | $ 31
[1] | Comparative periods reflect certain revisions. See Note 23.

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