Operating and Reporting Segments (Disclosure of Facilities) (Details) - Financial Services - USD ($) $ in Thousands	9 Months Ended
	Aug. 31, 2022	Nov. 30, 2021
Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,450,000
Residential facilities maturing October 2022 | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	200,000
Residential facilities maturing December 2022 | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	500,000
Residential facilities maturing May 2023 | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	200,000
Residential facilities maturing August 2023 | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	1,000,000
Residential facilities | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	1,900,000
Borrowings under facility	1,289,260	$ 1,482,258
Collateral under facilities	1,343,967	1,539,641
Commercial facilities maturing November 2022 | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100,000
Commercial facilities maturing December 2022 | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	400,000
Commercial Warehouse Repurchase Facility Due in July 2023 | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	50,000
Commercial facilities | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 550,000
Warehouse Repurchase Facility | Warehouse Repurchase Facility
Line of Credit Facility [Line Items]
Facility, term	364 days
Warehouse Repurchase Facility | Commercial facilities
Line of Credit Facility [Line Items]
Borrowings under facility	$ 57,740	$ 96,294