v3.26.1
LONG-TERM DEBT - Other loans (Details) - USD ($)
$ in Millions
6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Oct. 31, 2025
Debt Instrument      
Long-term debt $ 3,051   $ 3,050
Repayments of Long-Term Debt (3) $ (1)  
Other Loans      
Debt Instrument      
Long-term debt $ 18   $ 20
Strategic Innovation Fund      
Debt Instrument      
Weighted Average Interest Rate 4.70%    
Atlantic Canada Opportunities Agency (ACOA)      
Debt Instrument      
Weighted Average Interest Rate 4.50%