Business Combination, Acquisition Related Costs, Abandoned Pursuit Costs

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- Definition

Represents the number of unconsolidated real estate entities in which the entity had investments as of the balance sheet date.

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Long-Term Loan Guarantee, Payment Reimbursement By Partner, Percentage

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Long-Term Loan, Maximum Borrowing Capacity, Guarantee, Percentage

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- Definition

Number Of Development Rights, No Longer Probable

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- Definition

Other Commitment, New

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No definition available.

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- Definition

Other Commitment, Outstanding Funding

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- Definition

Other Commitments, Number of New SIP Commitments

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No definition available.

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- Definition

Other Commitments, Number of Repaid Commitments

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- Definition

Other Commitments, Number of SIP Commitments

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- Definition

Other Commitments, Proceeds from Repayment

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No definition available.

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- Definition

Other Commitments, Weighted Average Rate Of Return

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No definition available.

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- Definition

Amount of expense for acquisition-related cost incurred to effect business combination. Includes, but is not limited to, finder's fee; advisory, legal, accounting, valuation, and other professional and consulting fees; and general administrative cost, including cost of maintaining internal acquisition department.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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- Definition

Amount of interest income earned from interest bearing assets classified as other.

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- Definition

The expense charged against earnings to eliminate the capitalized costs of projects that have been terminated during the reporting period, which is added back to net income when calculating cash provided by (used in) operations using the indirect method.

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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- Definition

The cash inflow from a borrowing supported by a written promise to pay an obligation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Investments - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
Investments - Narrative (Details) $ in Thousands	Jun. 30, 2026 USD ($) developmentRight commitment entity	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) loan commitment developmentRight entity	Jun. 30, 2025 USD ($) developmentRight
Equity method investment
Number of new SIP commitments \| commitment	1
Other commitment, new	$ 15,000
Proceeds from repayment			$ 17,580
Number of repaid commitments \| loan			1
Number of SIP commitments \| commitment	9		9
Other commitment	$ 241,785		$ 241,785
Weighted average rate of return on other commitments	11.80%		11.80%
Other commitment, outstanding funding	$ 237,774		$ 237,774
Long-term construction loan, maximum borrowing capacity, guarantee, percentage	25.00%		25.00%
Loan guarantee, payment reimbursement by partner, percentage	75.00%		75.00%
Abandonment of development pursuits, net of recoveries	$ 7,609	$ 2,493	$ 11,025	$ 7,237
Abandoned pursuit costs	$ 4,545		$ 4,545	$ 3,668
Number of development rights, no longer probable \| developmentRight	1		1	1
Casualty and impairment loss	$ 0	858	$ 4,619	$ 858
Equity Residential Merger
Equity method investment
Acquisition-related cost, expense	12,367		12,367
Structured Investment Program
Equity method investment
Interest income, other	$ 7,806	6,689	15,022	12,820
Emergency Response
Equity method investment
Casualty and impairment loss			$ 4,619
Emergency Response \| New England region
Equity method investment
Casualty and impairment loss		$ 858		$ 858
Unconsolidated real estate entities
Equity method investment
Number of unconsolidated real estate entities \| entity	4		4
AVA Arts District
Equity method investment
Ownership percentage	25.00%		25.00%
Proceeds from notes payable			$ 162,911
Minimum \| Unconsolidated real estate entities
Equity method investment
Ownership percentage	20.00%		20.00%
Maximum \| Unconsolidated real estate entities
Equity method investment
Ownership percentage	28.60%		28.60%