Significant Accounting Policies - Real Estate Assets and Liabilities Held for Sale (Details) $ in Thousands	Oct. 31, 2025 USD ($) joint_venture unconsolidatedEntity	Oct. 31, 2024 USD ($) joint_venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate and related assets held for sale	$ 420,969	$ 0
Liabilities related to assets held for sale	$ 172,186	$ 0
Number of unconsolidated entities | joint_venture	45	60
Company's remaining funding commitment to unconsolidated entities	$ 331,165	$ 312,837
Number of joint ventures with debt financing | joint_venture	37	50
Rental Property Joint Ventures
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of unconsolidated entities | joint_venture	21	40
Disposal Group, Held-for-Sale, Not Discontinued Operations | 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 unconsolidated entities | joint_venture	18
Company's remaining funding commitment to unconsolidated entities	$ 1,240,000
Number of joint ventures with funding commitment | unconsolidatedEntity	6
Number of joint ventures with debt financing | joint_venture	16
Maximum estimated exposure under repayment and carry cost guarantees	$ 171,100
Maximum estimated exposure on outstanding amount	134,900
Disposal Group, Held-for-Sale, Not Discontinued Operations | 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
Disposal Group, Held-for-Sale, Not Discontinued Operations | 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