Investments in Unconsolidated Entities (Details 5) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022	Jul. 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Condensed Statements of Operations:
Income before income taxes	$ 604,966	$ 553,017	$ 430,592	$ 253,796	$ 841,144	$ 365,951	$ 295,815	$ 200,816	$ 1,842,371	$ 1,703,726	$ 1,100,315
Income tax provision									470,300	417,226	266,688
Income (loss) attributable to noncontrolling interest									(666)	64	(6,770)
Net income	$ 445,536	$ 414,789	$ 320,216	$ 191,530	$ 640,536	$ 273,467	$ 220,593	$ 151,904	1,372,071	1,286,500	833,627
Income from unconsolidated entities									50,098	23,723	74,035
Land Development Joint Venture [Member]
Condensed Statements of Operations:
Revenues									240,365	207,179	110,330
Cost of revenues									196,924	172,921	81,207
Other expenses									13,261	8,911	2,622
Total expenses									210,185	181,832	83,829
Gain on disposition of loans and REO										0	0
Income before income taxes									30,180	25,347	26,501
Other income (expense)									2,500	23,292	8,807
Income tax provision									214	348	258
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										48,291
Net income									32,466		35,050
Net Income Before Noncontrolling Interest									32,680	48,639	35,308
Home Building Joint Ventures, Total [Member]
Condensed Statements of Operations:
Revenues									38,124	60,902	88,534
Cost of revenues									26,583	45,087	105,436
Other expenses									7,201	4,717	4,887
Total expenses									33,784	49,804	110,323
Gain on disposition of loans and REO										0	0
Income before income taxes									4,340	11,098	(21,789)
Other income (expense)									205	804	317
Income tax provision									367	508	(875)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										11,394
Net income									4,178		(20,597)
Income from unconsolidated entities											(241)
Net Income Before Noncontrolling Interest									4,545	11,902	(21,472)
Rental Joint Ventures, including Trusts i and II [Member]
Condensed Statements of Operations:
Revenues									238,651	192,901	141,373
Cost of revenues									85,328	65,387	61,278
Other expenses									233,734	165,447	143,050
Total expenses									319,062	230,834	204,328
Gain on disposition of loans and REO										0	0
Income before income taxes									(80,411)	(37,933)	(62,955)
Other income (expense)									102,865	36,805	177,777
Income tax provision									(940)	(607)	(824)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										(521)
Net income									23,394		115,646
Net Income Before Noncontrolling Interest									22,454	(1,128)	114,822
Equity Method Investment, Realized Gain (Loss) on Disposal									106,200	29,900	177,600
Gibraltar Joint Ventures [Member]
Condensed Statements of Operations:
Revenues									28,221	37,705	21,357
Cost of revenues									21,031	26,229	10,506
Other expenses									1,053	1,436	1,947
Total expenses									22,084	27,665	12,453
Gain on disposition of loans and REO										(113)	(4,109)
Income before income taxes									6,137	9,927	4,795
Other income (expense)									241	0	0
Income tax provision									0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										9,927
Net income									6,378		4,795
Net Income Before Noncontrolling Interest									6,378	9,927	4,795
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Condensed Statements of Operations:
Revenues									545,361	498,687	361,594
Cost of revenues									329,866	309,624	258,427
Other expenses									255,249	180,511	152,506
Total expenses									585,115	490,135	410,933
Gain on disposition of loans and REO										(113)	4,109
Income before income taxes									(39,754)	8,439	(53,448)
Other income (expense)									105,811	60,901	186,901
Income tax provision									(359)	249	(1,441)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										69,091
Net income									66,416		134,894
Net Income Before Noncontrolling Interest									66,057	69,340	133,453
Land Development Joint Venture [Member]
Condensed Statements of Operations:
Income from unconsolidated entities									13,178	20,402	18,155
Home Building Joint Ventures, Total [Member]
Condensed Statements of Operations:
Income from unconsolidated entities									972	1,068
Rental Joint Ventures, including Trusts i and II [Member]
Condensed Statements of Operations:
Income from unconsolidated entities									34,327	(335)	53,792
Equity Method Investment, Realized Gain (Loss) on Disposal									50,900	21,000	74,800
Gibraltar Joint Ventures [Member]
Condensed Statements of Operations:
Income from unconsolidated entities									1,621	2,588	2,329
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Condensed Statements of Operations:
Income from unconsolidated entities									$ 50,098	$ 23,723	$ 74,035