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Investment in Joint Venture, Number Of Partners In Joint Venture

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Area of a real estate property.

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Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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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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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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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 in Unconsolidated Joint Ventures - Information about Joint Ventures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Apr. 30, 2022 USD ($)	Mar. 31, 2022 USD ($) ft² unit partner	Dec. 31, 2021 USD ($)
General information on each joint venture
Company's investments in unconsolidated joint ventures \| $			$ 3,000,986	$ 2,997,934
Net equity investment in VIEs in which the entity is not primary beneficiary \| $			$ 86,200	85,600
Unaudited Approximate Square Feet (sqft)			27,549,252
One Madison Avenue
General information on each joint venture
Ownership percentage deconsolidated	50.50%
Investment fair value adjustment \| $	$ 187,500
Stonehenge Properties \| Subsequent Event
General information on each joint venture
Gross Asset Valuation \| $		$ 1,000
One Madison Avenue
General information on each joint venture
Investment in joint venture aggregate equity committed by partner \| $	$ 492,200			$ 259,300
Investment in joint venture aggregate maximum ownership percentage	49.50%			25.00%
Investment in joint venture, number of partners \| partner			2
Investment in joint venture, ownership percentage			39.20%
21 East 66th Street \| Three Retail and Two Residential Units
General information on each joint venture
Ownership Interest			32.28%
Number of stores \| unit			3
Number of residential units \| unit			1
21 East 66th Street \| Three Residential Units
General information on each joint venture
Ownership Interest			16.14%
Number of residential units \| unit			2
Joint venture
General information on each joint venture
Company's investments in unconsolidated joint ventures \| $			$ 3,000,986
Equity method investments with negative book value \| $			$ 105,600
Joint venture \| 100 Park Avenue
General information on each joint venture
Ownership Interest			49.90%
Economic Interest			49.90%
Unaudited Approximate Square Feet (sqft)			834,000
Joint venture \| 717 Fifth Avenue
General information on each joint venture
Ownership Interest			10.92%
Economic Interest			10.92%
Unaudited Approximate Square Feet (sqft)			119,500
Joint venture \| 800 Third Avenue
General information on each joint venture
Ownership Interest			60.52%
Economic Interest			60.52%
Unaudited Approximate Square Feet (sqft)			526,000
Joint venture \| 919 Third Avenue
General information on each joint venture
Ownership Interest			51.00%
Economic Interest			51.00%
Unaudited Approximate Square Feet (sqft)			1,454,000
Joint venture \| 11 West 34th Street
General information on each joint venture
Ownership Interest			30.00%
Economic Interest			30.00%
Unaudited Approximate Square Feet (sqft)			17,150
Joint venture \| 280 Park Avenue
General information on each joint venture
Ownership Interest			50.00%
Economic Interest			50.00%
Unaudited Approximate Square Feet (sqft)			1,219,158
Joint venture \| 1552-1560 Broadway
General information on each joint venture
Ownership Interest			50.00%
Economic Interest			50.00%
Unaudited Approximate Square Feet (sqft)			57,718
Joint venture \| 10 East 53rd Street
General information on each joint venture
Ownership Interest			55.00%
Economic Interest			55.00%
Unaudited Approximate Square Feet (sqft)			354,300
Joint venture \| 21 East 66th Street
General information on each joint venture
Ownership Interest			32.28%
Economic Interest			32.28%
Unaudited Approximate Square Feet (sqft)			13,069
Joint venture \| 650 Fifth Avenue
General information on each joint venture
Ownership Interest			50.00%
Economic Interest			50.00%
Unaudited Approximate Square Feet (sqft)			69,214
Joint venture \| 121 Greene Street
General information on each joint venture
Ownership Interest			50.00%
Economic Interest			50.00%
Unaudited Approximate Square Feet (sqft)			7,131
Joint venture \| Stonehenge Properties
General information on each joint venture
Unaudited Approximate Square Feet (sqft)			1,439,016
Joint venture \| 11 Madison Avenue
General information on each joint venture
Ownership Interest			60.00%
Economic Interest			60.00%
Unaudited Approximate Square Feet (sqft)			2,314,000
Joint venture \| One Vanderbilt Avenue
General information on each joint venture
Ownership Interest			71.01%
Economic Interest			71.01%
Unaudited Approximate Square Feet (sqft)			1,657,198
Joint venture \| Worldwide Plaza
General information on each joint venture
Ownership Interest			24.95%
Economic Interest			24.95%
Unaudited Approximate Square Feet (sqft)			2,048,725
Joint venture \| 1515 Broadway
General information on each joint venture
Ownership Interest			56.87%
Economic Interest			56.87%
Unaudited Approximate Square Feet (sqft)			1,750,000
Joint venture \| 2 Herald Square
General information on each joint venture
Ownership Interest			51.00%
Economic Interest			51.00%
Unaudited Approximate Square Feet (sqft)			369,000
Joint venture \| 115 Spring Street
General information on each joint venture
Ownership Interest			51.00%
Economic Interest			51.00%
Unaudited Approximate Square Feet (sqft)			5,218
Joint venture \| 15 Beekman
General information on each joint venture
Ownership Interest			20.00%
Economic Interest			20.00%
Unaudited Approximate Square Feet (sqft)			221,884
Joint venture \| 85 Fifth Avenue
General information on each joint venture
Ownership Interest			36.27%
Economic Interest			36.27%
Unaudited Approximate Square Feet (sqft)			12,946
Joint venture \| One Madison Avenue
General information on each joint venture
Ownership Interest			25.50%
Economic Interest			25.50%
Unaudited Approximate Square Feet (sqft)			1,048,700
Joint venture \| 220 East 42nd Street
General information on each joint venture
Ownership Interest			51.00%
Economic Interest			51.00%
Unaudited Approximate Square Feet (sqft)			1,135,000