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Financial Instruments and Fair Value Disclosure (Narrative) (Details) - Financial Services - Mortgage servicing rights - Level 3	Nov. 30, 2024
Mortgage prepayment rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights, key assumptions	0.08
Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights, key assumptions	0.13
Delinquency rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage servicing rights, key assumptions	0.12

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