v3.26.3
COMMITMENTS AND CONTINGENCIES - Future Payments for Commitments (Details)
$ in Millions
Sep. 30, 2026
CAD ($)
Disclosure Of Commitments And Contingent Liabilities [Line Items]  
Transportation and storage $ 45,893
Real Estate 763
Obligation to Fund HCML 326
Other Long-Term Commitments 1,621
Total Commitments 48,603
Remainder of Year  
Disclosure Of Commitments And Contingent Liabilities [Line Items]  
Transportation and storage 670
Real Estate 16
Obligation to Fund HCML 26
Other Long-Term Commitments 447
Total Commitments 1,159
2 Years  
Disclosure Of Commitments And Contingent Liabilities [Line Items]  
Transportation and storage 2,596
Real Estate 65
Obligation to Fund HCML 97
Other Long-Term Commitments 206
Total Commitments 2,964
3 Years  
Disclosure Of Commitments And Contingent Liabilities [Line Items]  
Transportation and storage 2,714
Real Estate 68
Obligation to Fund HCML 56
Other Long-Term Commitments 175
Total Commitments 3,013
4 Years  
Disclosure Of Commitments And Contingent Liabilities [Line Items]  
Transportation and storage 3,349
Real Estate 70
Obligation to Fund HCML 43
Other Long-Term Commitments 128
Total Commitments 3,590
5 Years  
Disclosure Of Commitments And Contingent Liabilities [Line Items]  
Transportation and storage 3,069
Real Estate 70
Obligation to Fund HCML 43
Other Long-Term Commitments 125
Total Commitments 3,307
Thereafter  
Disclosure Of Commitments And Contingent Liabilities [Line Items]  
Transportation and storage 33,495
Real Estate 474
Obligation to Fund HCML 61
Other Long-Term Commitments 540
Total Commitments $ 34,570