The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

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Carrying amount of the equity interests owned by noncontrolling partners of a limited partnership included in the entity's consolidated financial statements.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Noncontrolling Interests (Property Partnerships) (Narrative) (Details) - USD ($) $ in Thousands	Aug. 27, 2025	Aug. 26, 2025	Sep. 30, 2025	Dec. 31, 2024
Noncontrolling Interest [Line Items]
Noncontrolling Interest in Limited Partnerships			$ 1,954,777	$ 1,933,545
343 Madison Avenue
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	$ 43,500
Gain on Sale of Investments	$ 0
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage		55.00%
343 Madison Avenue \| Minority Interest
Noncontrolling Interest [Line Items]
Subsidiary, Ownership Percentage, Noncontrolling Owner	45.00%