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Significant Accounting Policies (Details) $ in Millions					6 Months Ended
Significant Accounting Policies (Details) $ in Millions	May 20, 2026 USD ($) property	Apr. 30, 2026 USD ($)	Apr. 02, 2026 USD ($)	Mar. 13, 2026 USD ($) property	Jun. 30, 2026 note segment	Jul. 17, 2026 property	Mar. 27, 2026 property
Disposal Group, Including Discontinued Operations [Line Items]
Number of reportable segments \| segment					2
Notes receivable outstanding \| note					3
Constellation Loan
Disposal Group, Including Discontinued Operations [Line Items]
Contribution requirement	$ 3.7
Principal	$ 3.7
Interest rate	3.00%
Multifamily
Disposal Group, Including Discontinued Operations [Line Items]
Assets sold \| property	9			11			2
Assets \| property				14
Cash consideration from sale of real estate	$ 485.0			$ 562.0
Nonrefundable deposit				$ 15.0
Multifamily \| Subsequent event
Disposal Group, Including Discontinued Operations [Line Items]
Assets sold \| property						2
Retail
Disposal Group, Including Discontinued Operations [Line Items]
Assets sold \| property	5
Office
Disposal Group, Including Discontinued Operations [Line Items]
Assets sold \| property	1
AH Construction Holdings, LLC \| Construction Loans
Disposal Group, Including Discontinued Operations [Line Items]
Principal		$ 0.8
Interest rate		2.00%
Financing receivable, term		3 years
Noninterest bearing period		24 months
Harbor Point Parcel 3 \| Harbor Point Parcel 3 \| Beatty Development Group
Disposal Group, Including Discontinued Operations [Line Items]
Contribution requirement			$ 10.6
Principal			$ 5.3
Interest rate			3.00%
Financing receivable, term			3 years