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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
Apr. 30, 2018
Oct. 31, 2017
Company's land purchase commitments    
Purchase Obligation $ 2,678,070 $ 2,235,077
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 456,762 481,758
Land Purchase Commitment To Unrelated Party [Member]    
Company's land purchase commitments    
Purchase Obligation 2,443,177 1,986,276
Land Purchase Commitment To JV [Member]    
Company's land purchase commitments    
Purchase Obligation 234,893 248,801
Land Parcel Purchase Commitment [Member]    
Company's land purchase commitments    
Deposits against Aggregate Purchase Commitments 175,234 97,706
Additional cash required to acquire land 2,378,851 2,002,741
Amount of Additional Cash Required to Acquire Land Included in Accrued Expenses 3,028 4,329
Land Development Joint Venture, Irvine, California [Member] | Land Parcel Purchase Commitment [Member]    
Company's land purchase commitments    
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures $ 123,985 $ 134,630