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LONG-TERM DEBT - Other loans (Details) - USD ($) $ in Millions	Jul. 31, 2025	Oct. 31, 2024
Debt Instrument
Long-term debt	$ 3,350	$ 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%

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