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Commitments and Contingencies (Tables)
 9 Months Ended
Jul. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Company land purchase commitments Information regarding our land purchase commitments, as of the dates indicated, is provided in the table below (amounts in thousands):
July 31, 2021October 31, 2020
Aggregate purchase commitments:
Unrelated parties$4,055,246 $2,630,128 
Unconsolidated entities that the Company has investments in10,091 10,097 
Total$4,065,337 $2,640,225 
Deposits against aggregate purchase commitments$311,293 $223,571 
Additional cash required to acquire land3,754,044 2,416,654 
Total
$4,065,337 $2,640,225 
Amount of additional cash required to acquire land included in accrued expenses$21,151 $19,590 
Company mortgage commitments Information regarding our mortgage commitments, as of the dates indicated, is provided in the table below (amounts in thousands):
July 31,
2021		October 31, 2020
Aggregate mortgage loan commitments:
IRLCs$720,256 $381,116 
Non-IRLCs2,534,547 1,688,801 
Total$3,254,803 $2,069,917 
Investor commitments to purchase:
IRLCs$720,256 $381,116 
Mortgage loans held for sale177,845 217,876 
Total$898,101 $598,992