Investments in Unconsolidated Entities (Details 5) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2022	Jul. 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Oct. 31, 2021	Jul. 31, 2021	Apr. 30, 2021	Jan. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Condensed Statements of Operations:
Income before income taxes	$ 841,144	$ 365,951	$ 295,815	$ 200,816	$ 499,689	$ 303,395	$ 169,826	$ 127,405	$ 1,703,726	$ 1,100,315	$ 586,901
Income tax provision									417,226	266,688	140,277
Income (loss) attributable to noncontrolling interest									64	(6,770)	(10)
Net income	$ 640,536	$ 273,467	$ 220,593	$ 151,904	$ 374,330	$ 234,932	$ 127,866	$ 96,499	1,286,500	833,627	446,624
Income from unconsolidated entities									23,723	74,035	948
Land Development Joint Venture [Member]
Condensed Statements of Operations:
Revenues									207,179	110,330	87,174
Cost of revenues									172,921	81,207	64,810
Other expenses									8,911	2,622	2,948
Total expenses									181,832	83,829	67,758
Gain on disposition of loans and REO									0	0	0
Income before income taxes									25,347	26,501	19,416
Other income (expense)									23,292	8,807	3,061
Income tax provision									348	258	188
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										35,050	22,289
Income (loss) attributable to noncontrolling interest											0
Net income									48,291		22,289
Income from unconsolidated entities									20,402	18,155	11,412
Net Income Before Noncontrolling Interest									48,639	35,308	22,477
Home Building Joint Ventures, Total [Member]
Condensed Statements of Operations:
Revenues									60,902	88,534	139,587
Cost of revenues									45,087	105,436	124,899
Other expenses									4,717	4,887	15,731
Total expenses									49,804	110,323	140,630
Gain on disposition of loans and REO									0	0	0
Income before income taxes									11,098	(21,789)	(1,043)
Other income (expense)									804	317	536
Income tax provision									508	(875)	(254)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										(20,597)	(253)
Income (loss) attributable to noncontrolling interest											0
Net income									11,394		(253)
Income from unconsolidated entities									1,068	(241)	(3,424)
Net Income Before Noncontrolling Interest									11,902	(21,472)	(507)
Rental Joint Ventures, including Trusts i and II [Member]
Condensed Statements of Operations:
Revenues									192,901	141,373	111,122
Cost of revenues									65,387	61,278	37,770
Other expenses									165,447	143,050	117,419
Total expenses									230,834	204,328	155,189
Gain on disposition of loans and REO									0	0	0
Income before income taxes									(37,933)	(62,955)	(44,067)
Other income (expense)									36,805	177,777	(448)
Income tax provision									(607)	(824)	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										115,646	(44,515)
Income (loss) attributable to noncontrolling interest											0
Net income									(521)		(44,515)
Income from unconsolidated entities									(335)	53,792	(9,389)
Net Income Before Noncontrolling Interest									(1,128)	114,822	(44,515)
Gibraltar Joint Ventures [Member]
Condensed Statements of Operations:
Revenues									37,705	21,357	26,781
Cost of revenues									26,229	10,506	15,762
Other expenses									1,436	1,947	1,505
Total expenses									27,665	12,453	17,267
Gain on disposition of loans and REO									(113)	(4,109)	1,053
Income before income taxes									9,927	4,795	10,567
Other income (expense)									0	0
Income tax provision									0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										4,795	10,567
Income (loss) attributable to noncontrolling interest											48
Net income									9,927		10,615
Income from unconsolidated entities									2,588	2,329	2,349
Net Income Before Noncontrolling Interest									9,927	4,795	10,567
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Condensed Statements of Operations:
Revenues									498,687	361,594	364,664
Cost of revenues									309,624	258,427	243,241
Other expenses									180,511	152,506	137,603
Total expenses									490,135	410,933	380,844
Gain on disposition of loans and REO									(113)	(4,109)	(1,053)
Income before income taxes									8,439	(53,448)	(15,127)
Other income (expense)									60,901	186,901	3,149
Income tax provision									249	(1,441)	(66)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest										134,894	(11,912)
Income (loss) attributable to noncontrolling interest											48
Net income									69,091		(11,864)
Income from unconsolidated entities									23,723	74,035	948
Net Income Before Noncontrolling Interest									$ 69,340	$ 133,453	$ (11,978)