Investments in Unconsolidated Entities Investments in Unconsolidated Entities (Details 2) $ in Thousands	12 Months Ended
Oct. 31, 2020 USD ($) joint_ventures	Oct. 31, 2019 USD ($) joint_ventures
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,850,272
Amounts borrowed under commitments	1,366,638
Assets related to consolidated VIEs	11,065,733	$ 10,828,138
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 430,701	366,252
Number of joint ventures with loan commitments \| joint_ventures	28
Land Development Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Assets related to consolidated VIEs	$ 436,579	368,137
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 127,690	$ 110,306
Land Development Joint Venture [Member] \| Newly Formed Joint Ventures
Schedule of Equity Method Investments [Line Items]
Number of JVs formed in the period \| joint_ventures	1	1
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 24,602	$ 5,913
Rental Joint Ventures, including the Trust [Member] \| Newly Formed Joint Ventures
Schedule of Equity Method Investments [Line Items]
Number of JVs formed in the period \| joint_ventures	7	10
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 80,448	$ 49,691
Rental Joint Ventures, including the Trust [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Schedule of Equity Method Investments [Line Items]
Assets related to consolidated VIEs	163,000	145,800
Noncontrolling Interest in Variable Interest Entity	46,200	$ 41,000
Rental Joint Ventures, including the Trust [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Newly Formed Joint Ventures
Schedule of Equity Method Investments [Line Items]
Number of JVs formed in the period \| joint_ventures		4
Assets related to consolidated VIEs		$ 124,988
Noncontrolling Interest in Variable Interest Entity		$ 37,832
Land Development Joint Venture [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Newly Formed Joint Ventures
Schedule of Equity Method Investments [Line Items]
Number of JVs formed in the period \| joint_ventures		0
Assets related to consolidated VIEs		$ 0
Noncontrolling Interest in Variable Interest Entity		$ 0
Land Development Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	158,823
Amounts borrowed under commitments	$ 118,071
Number of joint ventures with loan commitments \| joint_ventures	4
Home Building Joint Ventures, Total [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 30,953
Amounts borrowed under commitments	$ 30,953
Number of joint ventures with loan commitments \| joint_ventures	1
Rental Joint Ventures, including Trusts i and II [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,660,496
Amounts borrowed under commitments	$ 1,217,614
Number of joint ventures with loan commitments \| joint_ventures	23

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Number of joint ventures with loan commitments [Member]

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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