Information on Segments - Schedule of Revenue and Income (Loss) Before Income Taxes and Total Assets (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024	Oct. 31, 2024
Revenues
Revenues:		$ 2,945,117	$ 2,727,944	$ 7,543,325	$ 7,513,278
Income (loss) before income taxes:
Income (loss) before income taxes:		499,500	503,627	1,198,385	1,464,567
Total assets
Assets		14,396,821		14,396,821		$ 13,367,932
Corporate and other
Revenues
Revenues:		361	1,007	(442)	(161)
Income (loss) before income taxes:
Income (loss) before income taxes:		(59,668)	(55,331)	(167,543)	(144,420)
Total assets
Assets		2,280,167		2,280,167		2,765,162
Traditional Homebuilding | Operating Segments
Revenues
Revenues:		2,880,614	2,723,465	7,428,646	7,303,489
Income (loss) before income taxes:
Income (loss) before income taxes:		559,168	558,958	1,365,928	1,608,987
Total assets
Assets		12,116,654		12,116,654		10,602,770
North | Traditional Homebuilding
Revenues
Revenues:		438,698	375,119	1,071,899	982,991
Income (loss) before income taxes:
Income (loss) before income taxes:		97,016	64,615	207,377	149,058
Total assets
Assets		1,576,499		1,576,499		1,425,738
Mid-Atlantic | Traditional Homebuilding
Revenues
Revenues:		400,718	335,721	958,715	975,985
Income (loss) before income taxes:
Income (loss) before income taxes:		71,328	73,470	167,985	377,513
Total assets
Assets		1,669,253		1,669,253		1,444,951
South | Traditional Homebuilding
Revenues
Revenues:		757,881	776,262	2,022,789	1,967,522
Income (loss) before income taxes:
Income (loss) before income taxes:		146,869	161,177	400,127	386,072
Total assets
Assets		2,907,732		2,907,732		2,514,446
Mountain | Traditional Homebuilding
Revenues
Revenues:		730,250	670,027	2,042,828	1,726,976
Income (loss) before income taxes:
Income (loss) before income taxes:		137,949	113,785	356,617	275,899
Total assets
Assets		3,198,153		3,198,153		2,950,806
Pacific | Traditional Homebuilding
Revenues
Revenues:		553,067	566,336	1,332,415	1,650,015
Income (loss) before income taxes:
Income (loss) before income taxes:		106,006	145,911	233,822	420,445
Total assets
Assets		2,765,017		2,765,017		$ 2,266,829
Home sales
Revenues
Revenues:		2,880,975	2,724,472	7,428,204	7,303,328
Land sales and other
Revenues
Revenues:		64,142	3,472	115,121	209,950
Income (loss) before income taxes:
Net cash proceeds from land parcel sale	$ 180,700
Land sales and other | Traditional Homebuilding
Revenues
Revenues:		63,889	2,272	106,311	206,346
Land sales and other | North
Revenues
Revenues:		0	0	17,156	140
Land sales and other | Mid-Atlantic
Revenues
Revenues:		8,791	1,245	32,475	194,217
Income (loss) before income taxes:
Net cash proceeds from land parcel sale					185,000
Land sales and other | South
Revenues
Revenues:		9,301	1,027	10,777	7,412
Land sales and other | Mountain
Revenues
Revenues:		44,410	0	44,410	4,577
Land sales and other | Pacific
Revenues
Revenues:		1,387	0	1,493	0
Land sales and other | Corporate and other
Revenues
Revenues:		$ 253	$ 1,200	$ 8,810	$ 3,604