Significant Accounting Policies - Real Estate Assets and Liabilities Held for Sale (Details) $ in Thousands	Apr. 30, 2026 USD ($) joint_venture	Oct. 31, 2025 USD ($) joint_venture unconsolidatedEntity
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate and related assets held for sale	$ 0	$ 420,969
Liabilities related to assets held for sale	$ 0	$ 172,186
Number of Joint Venture VIEs that the Company is the primary beneficiary and consolidates \| joint_venture	45	45
Number of joint ventures with debt financing \| joint_venture	39	37
Company's remaining funding commitment to unconsolidated entities	$ 278,013	$ 331,165
Mortgage Loans Held for Sale \| Apartment Living Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents		773
Property, construction and office equipment - net		187,482
Receivables, prepaid expenses and other assets		111,483
Investments in unconsolidated entities		121,231
Real estate and related assets held for sale		420,969
Loans payable		114,254
Accrued expenses		57,932
Liabilities related to assets held for sale		$ 172,186
Number of Joint Venture VIEs that the Company is the primary beneficiary and consolidates \| joint_venture		18
Number of joint ventures with funding commitment \| unconsolidatedEntity		6
Number of joint ventures with debt financing \| joint_venture		16
Company's remaining funding commitment to unconsolidated entities		$ 1,240,000
Maximum estimated exposure under repayment and carry cost guarantees		171,100
Maximum estimated exposure on outstanding amount		134,900
Mortgage Loans Held for Sale \| Apartment Living Assets \| Remaining Funding Commitment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Company's remaining funding commitment to unconsolidated entities		23,500
Mortgage Loans Held for Sale \| Apartment Living Assets \| Outstanding Commitment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Company's remaining funding commitment to unconsolidated entities		$ 1,030,000

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