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Compensation Plans - Schedule Of Nonvested Restricted Stock Units And Performance Based Units Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2021
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value	$ 18.0	$ 11.7	$ 13.1	$ 16.4
Vesting period (in years)	3 years	3 years	3 years	3 years
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value	$ 18.0	$ 8.8	$ 13.1	$ 16.4
Service period (in years)	3 years	3 years	3 years	3 years
Target level of ROTE	10.00%	10.00%	10.00%	10.00%
PSUs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target level of ROTE	7.50%	7.50%	7.50%	7.50%
ROTE threshold level	7.50%
PSUs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target level of ROTE	15.00%	15.00%	15.00%	15.00%
Percentage of target PSUs	150.00%

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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