Information on Segments (Details) - 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
Revenues
Revenue from Contract with Customer, Including Assessed Tax									$ 10,275,558	$ 8,790,361	$ 7,077,659
Income (loss) before income taxes
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
Total assets
Total assets	12,288,714				11,537,850				12,288,714	11,537,850
Gain (Loss) Related to Litigation Settlement									148,400
Other Income
Total assets
Gain (Loss) Related to Litigation Settlement									141,234	0	0
North [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax									1,853,720	2,011,896	1,480,187
Income (loss) before income taxes
Income before income taxes									280,829	313,694	87,576
Total assets
Total assets	1,464,995				1,624,420				1,464,995	1,624,420
Mid-Atlantic [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax									1,148,966	1,076,900	851,106
Income (loss) before income taxes
Income before income taxes									189,485	128,494	52,024
Total assets
Total assets	1,049,043				995,852				1,049,043	995,852
South [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax									1,519,600	1,183,272	1,041,204
Income (loss) before income taxes
Income before income taxes									249,665	153,799	108,396
Total assets
Total assets	2,137,568				1,421,612				2,137,568	1,421,612
Mountain
Revenues
Revenue from Contract with Customer, Including Assessed Tax									2,747,783	2,003,045	1,535,757
Income (loss) before income taxes
Income before income taxes									509,512	276,360	167,554
Total assets
Total assets	2,785,603				2,397,484				2,785,603	2,397,484
Pacific
Revenues
Revenue from Contract with Customer, Including Assessed Tax									2,441,959	2,156,114	2,029,851
Income (loss) before income taxes
Income before income taxes									572,844	382,855	351,493
Total assets
Total assets	2,174,065				2,221,752				2,174,065	2,221,752
Traditional Homebuilding [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax									9,712,028	8,431,227	6,938,105
Income (loss) before income taxes
Income before income taxes									1,802,335	1,255,202	767,043
Total assets
Total assets	9,611,274				8,661,120				9,611,274	8,661,120
Corporate and other [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax									(858)	519	(748)
Income (loss) before income taxes
Income before income taxes									(98,609)	(154,887)	(180,142)
Total assets
Total assets	2,677,440				2,876,730				2,677,440	2,876,730
Home Building [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax	3,580,952	2,256,337	2,186,529	1,687,352	2,950,417	2,234,365	1,836,260	1,410,704	9,711,170	8,431,746	6,937,357
Land [Member]
Revenues
Revenue from Contract with Customer, Including Assessed Tax	$ 131,182	$ 238,465	$ 91,012	$ 103,729	$ 90,963	$ 21,116	$ 93,864	$ 152,672	$ 564,388	$ 358,615	$ 140,302