v3.25.4
Additional cash flow information (Details) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Changes in liabilities arising from financing activities [abstract]    
Beginning balance $ 40,467 $ 37,012
Cash flows used in financing activities    
Increase in notes payable 452 1,945
Issue of long-term debt 7,809 3,834
Repayment of supplier finance arrangements (79) (78)
Repayment of long-term debt (10,013) (3,225)
Cash dividends paid on common and preferred shares (2,177) (3,800)
Cash dividends paid by subsidiaries to non-controlling interests (51) (68)
Other financing activities (189) (31)
Total cash flows used in financing activities excluding equity (4,248) (1,423)
Non-cash changes arising from    
Increase in lease liabilities 850 774
Dividends declared on common and preferred shares 2,305 3,827
Dividends declared by subsidiaries to non-controlling interests 51 68
Effect of changes in foreign exchange rates 0 0
Business acquisitions 2,757 120
Common shares issued under dividend reinvestment plan (633)  
Net early redemption (gains) losses on U.S. and CAD debentures (361)  
Additions to supplier finance arrangements 47 58
Reclassification to liabilities held for sale (7) (10)
Other 70 41
Total non-cash changes 5,079 4,878
Ending balance 41,298 40,467
Debt due within one year and long-term debt    
Changes in liabilities arising from financing activities [abstract]    
Beginning balance 40,504 36,177
Cash flows used in financing activities    
Increase in notes payable 475 1,817
Issue of long-term debt 7,809 3,834
Repayment of supplier finance arrangements (79) (78)
Repayment of long-term debt (10,013) (3,289)
Cash dividends paid on common and preferred shares 0 0
Cash dividends paid by subsidiaries to non-controlling interests 0 0
Other financing activities (74) (27)
Total cash flows used in financing activities excluding equity (1,882) 2,257
Non-cash changes arising from    
Increase in lease liabilities 850 774
Dividends declared on common and preferred shares 0 0
Dividends declared by subsidiaries to non-controlling interests 0 0
Effect of changes in foreign exchange rates (664) 987
Business acquisitions 2,757 120
Common shares issued under dividend reinvestment plan 0  
Net early redemption (gains) losses on U.S. and CAD debentures (599)  
Additions to supplier finance arrangements 47 58
Reclassification to liabilities held for sale (7) (10)
Other 53 141
Total non-cash changes 2,437 2,070
Ending balance 41,059 40,504
Derivative to hedge foreign currency on debt    
Changes in liabilities arising from financing activities [abstract]    
Beginning balance (975) (153)
Cash flows used in financing activities    
Increase in notes payable (23) 128
Issue of long-term debt 0 0
Repayment of supplier finance arrangements 0 0
Repayment of long-term debt 64
Cash dividends paid on common and preferred shares 0 0
Cash dividends paid by subsidiaries to non-controlling interests 0 0
Other financing activities 0 0
Total cash flows used in financing activities excluding equity (23) 192
Non-cash changes arising from    
Increase in lease liabilities 0 0
Dividends declared on common and preferred shares 0 0
Dividends declared by subsidiaries to non-controlling interests 0 0
Effect of changes in foreign exchange rates 664 (987)
Business acquisitions 0 0
Common shares issued under dividend reinvestment plan 0  
Net early redemption (gains) losses on U.S. and CAD debentures 122  
Additions to supplier finance arrangements 0 0
Reclassification to liabilities held for sale 0 0
Other 20 (27)
Total non-cash changes 806 (1,014)
Ending balance (192) (975)
Dividends payable    
Changes in liabilities arising from financing activities [abstract]    
Beginning balance 933 910
Cash flows used in financing activities    
Increase in notes payable 0 0
Issue of long-term debt 0 0
Repayment of supplier finance arrangements 0 0
Repayment of long-term debt 0 0
Cash dividends paid on common and preferred shares (2,177) (3,800)
Cash dividends paid by subsidiaries to non-controlling interests (51) (68)
Other financing activities 0 0
Total cash flows used in financing activities excluding equity (2,228) (3,868)
Non-cash changes arising from    
Increase in lease liabilities 0 0
Dividends declared on common and preferred shares 2,305 3,827
Dividends declared by subsidiaries to non-controlling interests 51 68
Effect of changes in foreign exchange rates 0 0
Business acquisitions 0 0
Common shares issued under dividend reinvestment plan (633)  
Net early redemption (gains) losses on U.S. and CAD debentures 0  
Additions to supplier finance arrangements 0 0
Reclassification to liabilities held for sale 0 0
Other (3) (4)
Total non-cash changes 1,720 3,891
Ending balance 425 933
Other liabilities    
Changes in liabilities arising from financing activities [abstract]    
Beginning balance 5 78
Cash flows used in financing activities    
Increase in notes payable 0 0
Issue of long-term debt 0 0
Repayment of supplier finance arrangements 0 0
Repayment of long-term debt 0 0
Cash dividends paid on common and preferred shares 0 0
Cash dividends paid by subsidiaries to non-controlling interests 0 0
Other financing activities (115) (4)
Total cash flows used in financing activities excluding equity (115) (4)
Non-cash changes arising from    
Increase in lease liabilities 0 0
Dividends declared on common and preferred shares 0 0
Dividends declared by subsidiaries to non-controlling interests 0 0
Effect of changes in foreign exchange rates 0 0
Business acquisitions 0 0
Common shares issued under dividend reinvestment plan 0  
Net early redemption (gains) losses on U.S. and CAD debentures 116  
Additions to supplier finance arrangements 0 0
Reclassification to liabilities held for sale 0 0
Other 0 (69)
Total non-cash changes 116 (69)
Ending balance $ 6 $ 5