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Inventory (Details) - USD ($)
$ in Thousands
Jul. 31, 2017
Oct. 31, 2016
Total Inventory    
Inventory $ 7,633,568 $ 7,353,967
Land controlled for future communities [Member]    
Total Inventory    
Inventory 81,512 71,729
Land Owned for Future Communities [Member]    
Total Inventory    
Inventory 1,153,712 1,884,146
Operating communities [Member]    
Total Inventory    
Inventory $ 6,398,344 $ 5,398,092