Other Income - Net (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Jan. 31, 2019	Apr. 30, 2020	Apr. 30, 2019
Other Nonoperating Income By Component [Line Items]
Interest income	$ 1,896	$ 4,338		$ 6,798	$ 10,210
Income from Ancillary Businesses	14,582	4,242		15,104	18,086
Management fee income from home building unconsolidated entities, net	1,549,072	1,716,094		2,880,503	3,079,275
Interest Expense, Debt	(2,440)			(2,440)
Other	(409)	(414)		(884)	(877)
Total other income - net	13,836	11,285		20,131	32,146
Revenues and expenses of non-core ancillary businesses
Revenue	27,432	32,846		53,842	65,129
Expense	25,820	29,749		51,708	60,374
Gain (Loss) on Disposition of Business	12,970	1,145	$ 12,200	12,970	13,331
Management Fee [Member]
Other Nonoperating Income By Component [Line Items]
Management fee income from home building unconsolidated entities, net	$ 207	$ 3,119		$ 1,553	$ 4,727