Information on Segments (Details) - 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
Revenues
Revenues:									$ 9,994,937	$ 10,275,558	$ 8,790,361
Income (loss) before income taxes
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
Total assets
Total assets	12,527,018				12,288,714				12,527,018	12,288,714
Gain (Loss) Related to Litigation Settlement										148,400
Other Income
Total assets
Gain (Loss) Related to Litigation Settlement									27,683	141,234	0
North [Member]
Revenues
Revenues:									1,494,127	1,853,720	2,011,896
Income (loss) before income taxes
Income before income taxes									197,414	280,829	313,694
Total assets
Total assets	1,281,479				1,464,995				1,281,479	1,464,995
Mid-Atlantic [Member]
Revenues
Revenues:									1,175,348	1,148,966	1,076,900
Income (loss) before income taxes
Income before income taxes									243,464	189,485	128,494
Total assets
Total assets	1,323,381				1,049,043				1,323,381	1,049,043
South [Member]
Revenues
Revenues:									2,204,763	1,519,600	1,183,272
Income (loss) before income taxes
Income before income taxes									416,711	249,665	153,799
Total assets
Total assets	2,399,055				2,137,568				2,399,055	2,137,568
Mountain
Revenues
Revenues:									2,660,746	2,747,783	2,003,045
Income (loss) before income taxes
Income before income taxes									517,080	509,512	276,360
Total assets
Total assets	2,666,874				2,785,603				2,666,874	2,785,603
Pacific
Revenues
Revenues:									2,329,365	2,441,959	2,156,114
Income (loss) before income taxes
Income before income taxes									610,126	572,844	382,855
Total assets
Total assets	2,175,776				2,174,065				2,175,776	2,174,065
Traditional Homebuilding [Member]
Revenues
Revenues:									9,864,349	9,712,028	8,431,227
Income (loss) before income taxes
Income before income taxes									1,984,795	1,802,335	1,255,202
Total assets
Total assets	9,846,565				9,611,274				9,846,565	9,611,274
Corporate and other [Member]
Revenues
Revenues:									1,677	(858)	519
Income (loss) before income taxes
Income before income taxes									(142,424)	(98,609)	(154,887)
Total assets
Total assets	2,680,453				2,677,440				2,680,453	2,677,440
Home Building [Member]
Revenues
Revenues:	2,951,904	2,674,602	2,490,098	1,749,422	3,580,952	2,256,337	2,186,529	1,687,352	9,866,026	9,711,170	8,431,746
Land [Member]
Revenues
Revenues:	$ 68,243	$ 13,040	$ 16,881	$ 30,747	$ 131,182	$ 238,465	$ 91,012	$ 103,729	$ 128,911	$ 564,388	$ 358,615