Other Income - Net (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jan. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Other Nonoperating Income By Component [Line Items]
Interest income	$ 869	$ 3,770		$ 7,667	$ 13,980
Income from Ancillary Businesses	1,548	3,536		16,652	21,622
Management fee income from home building unconsolidated entities, net	1,651,489	1,765,691		4,531,992	4,844,966
Interest Expense, Debt	0	0		(2,440)	0
Other	(46)	(232)		(930)	(1,109)
Total other income - net	4,786	8,721		24,917	40,867
Revenues and expenses of non-core ancillary businesses
Revenue	27,434	37,541		81,276	102,670
Expense	25,886	34,005		77,594	94,379
Gain (Loss) on Disposition of Business	0	0	$ 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	$ 2,415	$ 1,647		$ 3,968	$ 6,374