Summary Consolidated Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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
Quarterly Summary of Income Statement Data [Abstract]
Revenue from Contract with Customer, Including Assessed Tax									$ 10,275,558	$ 8,790,361	$ 7,077,659
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
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
Earnings Per Share [Abstract]
Basic earnings (in dollars per share)	$ 5.67	$ 2.37	$ 1.87	$ 1.26	$ 3.06	$ 1.90	$ 1.03	$ 0.77	$ 11.02	$ 6.72	$ 3.43
Diluted earnings (in dollars per share)	$ 5.63	$ 2.35	$ 1.85	$ 1.24	$ 3.02	$ 1.87	$ 1.01	$ 0.76	$ 10.90	$ 6.63	$ 3.40
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted-average shares	112,914	115,334	117,839	120,996	122,218	123,826	124,295	126,060	116,771	124,100	130,095
Weighted Average Number of Shares Outstanding, Diluted	113,793	116,326	118,925	122,858	124,057	125,610	125,999	127,562	117,975	125,807	131,247
Gain (Loss) Related to Litigation Settlement									$ 148,400
Other Income
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Gain (Loss) Related to Litigation Settlement									141,234	$ 0	$ 0
Home Building [Member]
Quarterly Summary of Income Statement Data [Abstract]
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
Gross Profit	963,038	585,634	527,264	397,825	694,373	508,241	401,767	288,911
Land [Member]
Quarterly Summary of Income Statement Data [Abstract]
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
Gross Profit	$ 1,571	$ 8,904	$ (1,969)	$ 4,112	$ 4,490	$ 2,407	$ 1,773	$ 40,938