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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Related Party Transactions (Details) - USD ($)	1 Months Ended	12 Months Ended
Related Party Transactions (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2017
Related Party Transaction [Line Items]
Payments made for services		$ 5,701,000	$ 12,377,000	$ 12,643,000
Operating lease rent		26,943,000	26,554,000	29,043,000
Total rental revenue		671,500,000	678,176,000	804,423,000
Amounts due from/to related parties
Due from joint ventures		26,812,000	28,204,000
Other		540,000	1,204,000
Related party receivables		27,352,000	29,408,000
One Vanderbilt Avenue
Related Party Transaction [Line Items]
Operating lease rent		3,000,000	2,400,000
SUMMIT One Vanderbilt
Related Party Transaction [Line Items]
Operating lease rent		33,000,000	5,000,000
Total rental revenue		22,800,000
Percentage rent			0
Alliance Building Services
Related Party Transaction [Line Items]
Profit participation from related party		1,400,000	1,700,000	1,400,000
Alliance Building Services \| Affiliated Entity
Related Party Transaction [Line Items]
Payments made for services		8,600,000	14,000,000	13,300,000
Stephen L Green Interest \| Affiliated Entity
Related Party Transaction [Line Items]
Property management fees from related party		$ 600,000	$ 700,000	$ 600,000
Marc Holliday, Chairman And CEO \| One Vanderbilt Avenue \| Affiliated Entity
Related Party Transaction [Line Items]
Due from (to) related party					$ 1,400,000
Marc Holliday, Chairman And CEO \| One Vanderbilt Avenue \| Minimum \| Affiliated Entity
Related Party Transaction [Line Items]
Percentage of profits due to investors	1.50%
Marc Holliday, Chairman And CEO \| One Vanderbilt Avenue \| Maximum \| Affiliated Entity
Related Party Transaction [Line Items]
Percentage of profits due to investors	1.80%
Andrew Mathias, President \| One Vanderbilt Avenue \| Affiliated Entity
Related Party Transaction [Line Items]
Due from (to) related party					$ 1,000,000
Andrew Mathias, President \| One Vanderbilt Avenue \| Minimum \| Affiliated Entity
Related Party Transaction [Line Items]
Percentage of profits due to investors	1.00%
Andrew Mathias, President \| One Vanderbilt Avenue \| Maximum \| Affiliated Entity
Related Party Transaction [Line Items]
Percentage of profits due to investors	1.20%
Holiday And Mathias \| One Vanderbilt Avenue \| Affiliated Entity
Related Party Transaction [Line Items]
Stabilization of property, within three years after stabilization, percent		50.00%
Stabilization period		3 years
Stabilization of property, three years or more after stabilization, percent		100.00%
Stabilization of property, anniversary period		7 years
Holiday \| Affiliated Entity \| One Vanderbilt Avenue \| Property Interest Liquidation
Related Party Transaction [Line Items]
Liquidation values		$ 17,900,000
Mathias \| Affiliated Entity \| One Vanderbilt Avenue \| Property Interest Liquidation
Related Party Transaction [Line Items]
Liquidation values		$ 11,900,000