v3.25.4
Debt due within one year - Summary of Total Bank Credit Facilities (Details) - Dec. 31, 2025
$ in Millions, $ in Millions
CAD ($)
USD ($)
Unsecured revolving and expansion credit facilities    
Disclosure of detailed information about borrowings [line items]    
Total available $ 4,000  
Drawn 0  
Letters of credit 0  
Commercial paper outstanding 2,550 $ 1,861
Net available 1,450  
Unsecured committed term loan facility    
Disclosure of detailed information about borrowings [line items]    
Total available 960  
Drawn 668  
Letters of credit 0  
Commercial paper outstanding 0  
Net available 292  
Unsecured term loan facility    
Disclosure of detailed information about borrowings [line items]    
Total available 686  
Drawn 686  
Letters of credit 0  
Commercial paper outstanding 0  
Net available 0  
Unsecured non-revolving credit facilities    
Disclosure of detailed information about borrowings [line items]    
Total available 641  
Drawn 55  
Letters of credit 0  
Commercial paper outstanding 0  
Net available 586  
Other    
Disclosure of detailed information about borrowings [line items]    
Total available 106  
Drawn 0  
Letters of credit 71  
Commercial paper outstanding 0  
Net available 35  
Total committed credit facilities    
Disclosure of detailed information about borrowings [line items]    
Total available 6,393  
Drawn 1,409  
Letters of credit 71  
Commercial paper outstanding 2,550  
Net available 2,363  
Total non-committed credit facilities    
Disclosure of detailed information about borrowings [line items]    
Total available 1,840  
Drawn 0  
Letters of credit 604  
Commercial paper outstanding 0  
Net available 1,236  
Total non-committed credit facilities | Bell Canada    
Disclosure of detailed information about borrowings [line items]    
Total available 1,840  
Drawn 0  
Letters of credit 604  
Commercial paper outstanding 0  
Net available 1,236  
Total committed and non-committed credit facilities    
Disclosure of detailed information about borrowings [line items]    
Total available 8,233  
Drawn 1,409  
Letters of credit 675  
Commercial paper outstanding 2,550  
Net available 3,599  
Unsecured revolving credit facility    
Disclosure of detailed information about borrowings [line items]    
Total available 2,700  
Unsecured expansion facility    
Disclosure of detailed information about borrowings [line items]    
Total available $ 1,300