Summary Consolidated Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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
Quarterly Summary of Income Statement Data [Abstract]
Revenues:									$ 9,994,937	$ 10,275,558	$ 8,790,361
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
Net income	$ 445,536	$ 414,789	$ 320,216	$ 191,530	$ 640,536	$ 273,467	$ 220,593	$ 151,904	$ 1,372,071	$ 1,286,500	$ 833,627
Earnings Per Share [Abstract]
Basic earnings (in dollars per share)	$ 4.15	$ 3.77	$ 2.88	$ 1.72	$ 5.67	$ 2.37	$ 1.87	$ 1.26	$ 12.47	$ 11.02	$ 6.72
Diluted earnings (in dollars per share)	$ 4.11	$ 3.73	$ 2.85	$ 1.70	$ 5.63	$ 2.35	$ 1.85	$ 1.24	$ 12.36	$ 10.90	$ 6.63
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted-average shares	107,465	110,003	111,214	111,397	112,914	115,334	117,839	120,996	110,020	116,771	124,100
Weighted Average Number of Shares Outstanding, Diluted	108,388	111,123	112,184	112,336	113,793	116,326	118,925	122,858	111,008	117,975	125,807
Gain (Loss) Related to Litigation Settlement										$ 148,400
Other Income
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Gain (Loss) Related to Litigation Settlement									$ 27,683	141,234	$ 0
Home Building [Member]
Quarterly Summary of Income Statement Data [Abstract]
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
Gross Profit	810,375	742,653	657,220	448,499	963,038	585,634	527,264	397,825
Land [Member]
Quarterly Summary of Income Statement Data [Abstract]
Revenues:	68,243	13,040	16,881	30,747	131,182	238,465	91,012	103,729	$ 128,911	$ 564,388	$ 358,615
Gross Profit	$ (10,351)	$ 1,462	$ (3,969)	$ (11,688)	$ 1,571	$ 8,904	$ (1,969)	$ 4,112