Information on Segments (Details 1) - USD ($) $ in Thousands	Oct. 31, 2020	Oct. 31, 2019
Inventory
Inventory	$ 7,658,906	$ 7,873,048
Land controlled for future communities [Member]
Inventory
Inventory	223,525	182,929
Land Owned for Future Communities [Member]
Inventory
Inventory	1,036,843	868,201
Operating communities [Member]
Inventory
Inventory	6,398,538	6,821,918
North [Member]
Inventory
Inventory	1,337,323	1,365,893
North [Member] | Land controlled for future communities [Member]
Inventory
Inventory	40,753	32,712
North [Member] | Land Owned for Future Communities [Member]
Inventory
Inventory	155,737	99,947
North [Member] | Operating communities [Member]
Inventory
Inventory	1,140,833	1,233,234
Mid-Atlantic [Member]
Inventory
Inventory	821,249	832,979
Mid-Atlantic [Member] | Land controlled for future communities [Member]
Inventory
Inventory	31,572	50,534
Mid-Atlantic [Member] | Land Owned for Future Communities [Member]
Inventory
Inventory	142,196	76,682
Mid-Atlantic [Member] | Operating communities [Member]
Inventory
Inventory	647,481	705,763
South [Member]
Inventory
Inventory	983,995	974,746
South [Member] | Land controlled for future communities [Member]
Inventory
Inventory	13,964	10,326
South [Member] | Land Owned for Future Communities [Member]
Inventory
Inventory	122,671	118,830
South [Member] | Operating communities [Member]
Inventory
Inventory	847,360	845,590
Mountain
Inventory
Inventory	1,888,011	1,704,930
Mountain | Land controlled for future communities [Member]
Inventory
Inventory	8,811	18,973
Mountain | Land Owned for Future Communities [Member]
Inventory
Inventory	38,370	34,165
Mountain | Operating communities [Member]
Inventory
Inventory	1,840,830	1,651,792
Pacific
Inventory
Inventory	2,165,023	2,539,101
Pacific | Land controlled for future communities [Member]
Inventory
Inventory	128,425	70,384
Pacific | Land Owned for Future Communities [Member]
Inventory
Inventory	379,916	353,186
Pacific | Operating communities [Member]
Inventory
Inventory	1,656,682	2,115,531
Traditional Homebuilding [Member]
Inventory
Inventory	7,195,601	7,417,649
Traditional Homebuilding [Member] | Land controlled for future communities [Member]
Inventory
Inventory	223,525	182,929
Traditional Homebuilding [Member] | Land Owned for Future Communities [Member]
Inventory
Inventory	838,890	682,810
Traditional Homebuilding [Member] | Operating communities [Member]
Inventory
Inventory	6,133,186	6,551,910
City Living [Member]
Inventory
Inventory	463,305	455,399
City Living [Member] | Land controlled for future communities [Member]
Inventory
Inventory	0	0
City Living [Member] | Land Owned for Future Communities [Member]
Inventory
Inventory	197,953	185,391
City Living [Member] | Operating communities [Member]
Inventory
Inventory	$ 265,352	$ 270,008