Segment Information (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Segment Reporting Information [Line Items]
Interest expense	$ 21,160	$ 23,138	$ 42,714	$ 46,156
Reportable Segments | Merchant Banking
Segment Reporting Information [Line Items]
Interest expense	8,300	8,400	17,100	16,600
Parent Company interest
Segment Reporting Information [Line Items]
Interest expense	$ 12,900	$ 14,800	$ 25,700	$ 29,500