Operating and Reporting Segments (Fair Value Inputs for Commercial Mortgage-Backed Securities) (Details) - Commercial Mortgage-Backed Securities - Financial Services	12 Months Ended
	Nov. 30, 2022
Minimum
Segment Reporting Information [Line Items]
Discount rate	6.00%
Coupon rate	2.00%
Maximum
Segment Reporting Information [Line Items]
Discount rate	84.00%
Coupon rate	5.30%