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Operating and Reporting Segments (Fair Value Inputs for Commercial Mortgage-Backed Securities) (Details) - CMBS - Financial Services	9 Months Ended
	Aug. 31, 2021
Minimum
Segment Reporting Information [Line Items]
Discount rates at purchase	6.00%
Coupon rates	2.00%
Maximum
Segment Reporting Information [Line Items]
Discount rates at purchase	84.00%
Coupon rates	5.30%

X

- Definition

Held to Maturity Securities, Coupon Rate

+ References

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+ Details

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- Definition

Held to Maturity Securities, Discount Rate as a Percent of Face Value

+ References

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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X

- Details

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- Details

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