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LONG-TERM DEBT - Other loans (Details) - USD ($)
$ in Millions
Apr. 30, 2025
Oct. 31, 2024
Debt Instrument    
Long-term debt $ 3,349 $ 3,345
Other Loans    
Debt Instrument    
Long-term debt $ 21 $ 19
Strategic Innovation Fund    
Debt Instrument    
Debt, Weighted Average Interest Rate 4.70%  
Atlantic Canada Opportunities Agency (ACOA)    
Debt Instrument    
Debt, Weighted Average Interest Rate 4.50%