Investments in Unconsolidated Joint Ventures - Schedule of General Information on Joint Ventures (Details)	1 Months Ended				3 Months Ended	12 Months Ended
	Nov. 30, 2024 USD ($)	Jan. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jun. 30, 2023 USD ($) ft²	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) ft²	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2023	Dec. 31, 2021 USD ($)
General information on each joint venture
Depreciable real estate reserves and impairments						$ (104,071,000)	$ (382,374,000)	$ (6,313,000)
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate						208,144,000	(13,368,000)	(131,000)
Mortgages and other loans payable, net			$ 1,491,319,000			1,944,635,000	1,491,319,000
Repayments of mortgages						68,977,000	25,826,000	292,364,000
Ownership percentage deconsolidated				50.10%
Investment fair value adjustment				$ 17,000,000			17,000,000
Carrying value of investment in leasehold interest			6,102,864,000			6,607,741,000	6,102,864,000	$ 9,198,799,000		$ 7,650,907,000
Carrying Value			346,745,000			303,726,000	346,745,000
Preferred Equity
General information on each joint venture
Carrying Value						136,720,000
245 Park Avenue
General information on each joint venture
Approximate Square Feet | ft²				1,782,793
Ownership interest disposed				49.90%
1552-1560 Broadway
General information on each joint venture
Depreciable real estate reserves and impairments			8,100,000
2 Herald Square
General information on each joint venture
Depreciable real estate reserves and impairments			101,700,000
625 Madison Avenue
General information on each joint venture
Depreciable real estate reserves and impairments					$ 5,900,000		23,100,000
625 Madison Avenue | Preferred Equity
General information on each joint venture
Carrying value of investment in leasehold interest						235,400,000
Carrying Value						$ 214,700,000
Average yield (as a percent)						8.86%
Due from joint ventures
General information on each joint venture
Mortgages and other loans payable, net			$ 14,799,277,000			$ 12,234,261,000	$ 14,799,277,000
Due from joint ventures | 2 Herald Square
General information on each joint venture
Consideration transferred		$ 0
Investment in joint venture, ownership percentage		95.00%
Mortgages and other loans payable, net		$ 182,500,000
Repayments of mortgages		$ 7,000,000
Private Investors | 115 Spring Street
General information on each joint venture
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate						$ 11,700,000
Private Investors | Due from joint ventures | 800 Third Avenue
General information on each joint venture
Economic Interest (as a percent)						60.52%
Approximate Square Feet | ft²						526,000
Private Investors | Due from joint ventures | 115 Spring Street
General information on each joint venture
Economic Interest (as a percent)						51.00%
Approximate Square Feet | ft²						5,218
Private Investors | Due from joint ventures | 625 Madison Avenue
General information on each joint venture
Economic Interest (as a percent)						90.93%
Approximate Square Feet | ft²						563,000
Ownership Interest									90.43%
New York State Teacher's Retirement System | Due from joint ventures | 919 Third Avenue
General information on each joint venture
Economic Interest (as a percent)						51.00%
Approximate Square Feet | ft²						1,454,000
Private Investor / Wharton Properties | Due from joint ventures | 11 West 34th Street
General information on each joint venture
Economic Interest (as a percent)						30.00%
Approximate Square Feet | ft²						17,150
Vornado Realty Trust | Due from joint ventures | 280 Park Avenue
General information on each joint venture
Economic Interest (as a percent)						50.00%
Approximate Square Feet | ft²						1,219,158
Wharton Properties | Due from joint ventures | 1552-1560 Broadway
General information on each joint venture
Economic Interest (as a percent)						50.00%
Approximate Square Feet | ft²						57,718
Wharton Properties | Due from joint ventures | 650 Fifth Avenue
General information on each joint venture
Economic Interest (as a percent)						50.00%
Approximate Square Feet | ft²						69,214
PGIM Real Estate | Due from joint ventures | 11 Madison Avenue
General information on each joint venture
Economic Interest (as a percent)						60.00%
Approximate Square Feet | ft²						2,314,000
National Pension Service of Korea / Hines Interest LP / Mori Building Co., Ltd | One Vanderbilt Avenue
General information on each joint venture
Investment in joint venture aggregate maximum ownership percentage										11.00%
Investment In Joint Venture, Retained Ownership Percentage	60.01%
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate	$ 72,600,000
National Pension Service of Korea / Hines Interest LP / Mori Building Co., Ltd | Due from joint ventures | One Vanderbilt Avenue
General information on each joint venture
Economic Interest (as a percent)						60.01%
Approximate Square Feet | ft²						1,657,198
RXR Realty / New York REIT | Due from joint ventures | Worldwide Plaza
General information on each joint venture
Economic Interest (as a percent)						24.95%
Approximate Square Feet | ft²						2,048,725
Allianz Real Estate of America | Due from joint ventures | 1515 Broadway
General information on each joint venture
Economic Interest (as a percent)						56.87%
Approximate Square Feet | ft²						1,750,000
Israeli Institutional Investor | 2 Herald Square
General information on each joint venture
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate	$ 20,400,000
Israeli Institutional Investor | Due from joint ventures | 2 Herald Square
General information on each joint venture
Economic Interest (as a percent)						95.00%
Approximate Square Feet | ft²						369,000
A fund managed by Meritz Alternative Investment Management | Due from joint ventures | 15 Beekman
General information on each joint venture
Economic Interest (as a percent)						20.00%
Approximate Square Feet | ft²						221,884
A fund managed by Meritz Alternative Investment Management | Due from joint ventures | 220 East 42nd Street
General information on each joint venture
Economic Interest (as a percent)						51.00%
Approximate Square Feet | ft²						1,135,000
Wells Fargo | 85 Fifth Avenue
General information on each joint venture
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate						$ 12,000,000
Wells Fargo | Due from joint ventures | 85 Fifth Avenue
General information on each joint venture
Economic Interest (as a percent)						36.27%
Approximate Square Feet | ft²						12,946
National Pension Service of Korea / Hines Interest LP / International Investor | One Madison Avenue
General information on each joint venture
Investment in joint venture aggregate maximum ownership percentage						25.00%				25.00%
National Pension Service of Korea / Hines Interest LP / International Investor | Due from joint ventures | One Madison Avenue
General information on each joint venture
Economic Interest (as a percent)						25.50%
Approximate Square Feet | ft²						1,048,700
Korean Institutional Investor / Israeli Institutional Investor | 450 Park Avenue | Third-Party
General information on each joint venture
Investment in joint venture, partners' ownership percentage						25.00%
Ownership Interest						49.90%
Korean Institutional Investor / Israeli Institutional Investor | Due from joint ventures | 450 Park Avenue
General information on each joint venture
Economic Interest (as a percent)						25.10%
Approximate Square Feet | ft²						337,000
Investment in joint venture, ownership percentage						25.10%
Ownership Interest						50.10%
U.S. Affiliate of Mori Trust Co., Ltd | Due from joint ventures | 245 Park Avenue
General information on each joint venture
Economic Interest (as a percent)						50.10%
Approximate Square Feet | ft²						1,782,793