v3.26.1
Business segments (Detail) - CAD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]          
NumberOfReportableSegmentsNotDisclosedFlag        
Revenues and other income          
Revenues [1] $ 15,981 $ 11,208 $ 28,397 $ 23,674  
Investment and other income 81 24 111 75  
Total revenues and other income 16,062 11,232 28,508 23,749  
Expenses          
Exploration 1 0 4 2  
Purchases of crude oil and products [2] 10,641 7,215 18,819 14,971  
Production and manufacturing [3] 1,819 1,664 3,573 3,350  
Selling and general [3] 144 251 541 510  
Federal excise tax and fuel charge 70 372 418 964  
Depreciation and depletion 511 478 1,031 1,009  
Non-service pension and postretirement benefit 2 6 5 11  
Financing [4] 14 2 25 0  
Total expenses 13,202 9,988 24,416 20,817  
Income (loss) before income taxes 2,860 1,244 4,092 2,932  
Income taxes 670 295 962 695  
Net income (loss) 2,190 949 3,130 2,237  
Cash flows from (used in) operating activities 2,704 1,465 3,460 2,992  
Capital and exploration expenditures 531 473 1,009 871  
Assets 47,863 44,178 47,863 44,178 $ 42,309
Corporate and other          
Revenues and other income          
Revenues 0 0 0 0  
Investment and other income 12 13 22 29  
Total revenues and other income 12 13 22 29  
Expenses          
Exploration 0 0 0 0  
Purchases of crude oil and products 0 0 0 0  
Production and manufacturing 3 9 6 11  
Selling and general (67) 58 130 123  
Federal excise tax and fuel charge 0 0 0 0  
Depreciation and depletion 13 12 26 24  
Non-service pension and postretirement benefit 2 6 5 11  
Financing 9 2 20 12  
Total expenses (40) 87 187 181  
Income (loss) before income taxes 52 (74) (165) (152)  
Income taxes 13 (16) (39) (36)  
Net income (loss) 39 (58) (126) (116)  
Cash flows from (used in) operating activities (76) (63) (70) (137)  
Capital and exploration expenditures 19 29 41 70  
Assets 5,379 4,510 5,379 4,510  
Eliminations          
Revenues and other income          
Revenues (7,745) (5,348) (13,576) (11,696)  
Total revenues and other income (7,745) (5,348) (13,576) (11,696)  
Expenses          
Exploration 0 0 0 0  
Purchases of crude oil and products (7,742) (5,346) (13,571) (11,692)  
Production and manufacturing 0 0 0 0  
Selling and general (3) (2) (5) (4)  
Federal excise tax and fuel charge 0 0 0 0  
Depreciation and depletion 0 0 0 0  
Non-service pension and postretirement benefit 0 0 0 0  
Financing 0 0 0 0  
Total expenses (7,745) (5,348) (13,576) (11,696)  
Income (loss) before income taxes 0 0 0 0  
Income taxes 0 0 0 0  
Net income (loss) 0 0 0 0  
Cash flows from (used in) operating activities 0 0 0 (15)  
Capital and exploration expenditures 0 0 0 0  
Assets (2,277) (2,022) (2,277) (2,022)  
Upstream | Intersegment Eliminations          
Revenues and other income          
Revenues 5,387 3,701 9,282 8,106  
Upstream | Operating Segments          
Revenues and other income          
Revenues 110 87 235 126  
Investment and other income 1 (4) 2 10  
Total revenues and other income 5,498 3,784 9,519 8,242  
Expenses          
Exploration 1 0 4 2  
Purchases of crude oil and products 2,170 1,369 3,889 3,231  
Production and manufacturing 1,220 1,127 2,456 2,303  
Selling and general 0 0 0 0  
Federal excise tax and fuel charge 0 0 0 0  
Depreciation and depletion 409 418 856 888  
Non-service pension and postretirement benefit 0 0 0 0  
Financing 4 0 4 (12)  
Total expenses 3,804 2,914 7,209 6,412  
Income (loss) before income taxes 1,694 870 2,310 1,830  
Income taxes 395 206 541 435  
Net income (loss) 1,299 664 1,769 1,395  
Cash flows from (used in) operating activities 1,707 1,021 1,828 1,222  
Capital and exploration expenditures 359 353 721 619  
Assets 29,834 29,387 29,834 29,387  
Downstream | Intersegment Eliminations          
Revenues and other income          
Revenues 2,230 1,550 4,070 3,387  
Downstream | Operating Segments          
Revenues and other income          
Revenues 15,552 10,862 27,603 23,023  
Investment and other income 68 15 87 36  
Total revenues and other income 17,850 12,427 31,760 26,446  
Expenses          
Exploration 0 0 0 0  
Purchases of crude oil and products 15,936 10,952 27,998 22,939  
Production and manufacturing 542 466 1,005 923  
Selling and general 195 175 375 349  
Federal excise tax and fuel charge 70 370 417 961  
Depreciation and depletion 79 44 135 89  
Non-service pension and postretirement benefit 0 0 0 0  
Financing 1 0 1 0  
Total expenses 16,823 12,007 29,931 25,261  
Income (loss) before income taxes 1,027 420 1,829 1,185  
Income taxes 240 98 431 279  
Net income (loss) 787 322 1,398 906  
Cash flows from (used in) operating activities 1,027 641 1,631 1,997  
Capital and exploration expenditures 125 90 216 178  
Assets 14,337 11,784 14,337 11,784  
Chemical | Intersegment Eliminations          
Revenues and other income          
Revenues 128 97 224 203  
Chemical | Operating Segments          
Revenues and other income          
Revenues 319 259 559 525  
Investment and other income 0 0 0 0  
Total revenues and other income 447 356 783 728  
Expenses          
Exploration 0 0 0 0  
Purchases of crude oil and products 277 240 503 493  
Production and manufacturing 54 62 106 113  
Selling and general 19 20 41 42  
Federal excise tax and fuel charge 0 2 1 3  
Depreciation and depletion 10 4 14 8  
Non-service pension and postretirement benefit 0 0 0 0  
Financing 0 0 0 0  
Total expenses 360 328 665 659  
Income (loss) before income taxes 87 28 118 69  
Income taxes 22 7 29 17  
Net income (loss) 65 21 89 52  
Cash flows from (used in) operating activities 46 (134) 71 (75)  
Capital and exploration expenditures 28 1 31 4  
Assets $ 590 $ 519 $ 590 $ 519  
[1]
(a) Amounts from related parties included in revenues.5,186 3,342 8,846 6,995 
[2]
(b) Amounts to related parties included in purchases of crude oil and products.1,895 1,363 3,145 2,569 
[3]
(c) Amounts to related parties included in production and manufacturing, and selling
and general expenses.
164 130 319 294 
[4]
(d) Amounts to related parties included in financing.22 23 43 49