Investments in Unconsolidated Joint Ventures - Schedule of Mortgage Notes and Other Loans Payable Collateralized by the Respective Joint Venture Properties and Assignment of Leases (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 2024	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total fixed rate debt		$ 1,587,474	$ 1,587,474	$ 1,387,386
Total floating rate debt		363,550	363,550	110,000
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate			208,144	(13,368)	$ (131)
115 Spring Street | Private Investors
Debt Instrument [Line Items]
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate			11,700
5 Times Square
Debt Instrument [Line Items]
Impairment charge		146,400
2 Herald Square | Israeli Institutional Investor
Debt Instrument [Line Items]
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate	$ 20,400
100 Park Avenue
Debt Instrument [Line Items]
Total floating rate debt		360,000	360,000	0
Due from joint ventures
Debt Instrument [Line Items]
Total fixed rate debt		11,551,101	11,551,101	12,000,559
Total floating rate debt		780,889	780,889	2,902,780
Total joint venture mortgages and other loans payable		12,331,990	12,331,990	14,903,339
Deferred financing costs, net		(97,729)	(97,729)	(104,062)
Total joint venture mortgages and other loans payable, net		12,234,261	12,234,261	14,799,277
Due from joint ventures | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		5,728,933	5,728,933	6,053,808
Total floating rate debt		298,929	298,929	1,298,467
Total joint venture mortgages and other loans payable		6,027,862	6,027,862	7,352,275
Deferred financing costs, net		(49,058)	(49,058)	(54,865)
Total joint venture mortgages and other loans payable, net		$ 5,978,804	$ 5,978,804	7,297,410
Due from joint ventures | 650 Fifth Avenue | Wharton Properties
Debt Instrument [Line Items]
Economic Interest (as a percent)		50.00%	50.00%
Interest rate, floating rate debt (as a percent)		2.25%	2.25%
Total floating rate debt		$ 210,000	$ 210,000	210,000
Due from joint ventures | 650 Fifth Avenue | Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 105,000	$ 105,000	105,000
Due from joint ventures | 115 Spring Street | Private Investors
Debt Instrument [Line Items]
Economic Interest (as a percent)		51.00%	51.00%
Interest rate, fixed rate debt (as a percent)		5.50%	5.50%
Total fixed rate debt		$ 65,550	$ 65,550	65,550
Due from joint ventures | 115 Spring Street | Private Investors | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 33,431	$ 33,431	33,431
Due from joint ventures | 450 Park Avenue | Korean Institutional Investor / Israeli Institutional Investor
Debt Instrument [Line Items]
Economic Interest (as a percent)		25.10%	25.10%
Interest rate, fixed rate debt (as a percent)		6.10%	6.10%
Total fixed rate debt		$ 284,835	$ 284,835	271,394
Due from joint ventures | 450 Park Avenue | Korean Institutional Investor / Israeli Institutional Investor | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 71,494	$ 71,494	68,120
Due from joint ventures | 11 Madison Avenue | PGIM Real Estate
Debt Instrument [Line Items]
Economic Interest (as a percent)		60.00%	60.00%
Interest rate, fixed rate debt (as a percent)		3.84%	3.84%
Total fixed rate debt		$ 1,400,000	$ 1,400,000	1,400,000
Due from joint ventures | 11 Madison Avenue | PGIM Real Estate | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 840,000	$ 840,000	840,000
Due from joint ventures | 15 Beekman | A fund managed by Meritz Alternative Investment Management
Debt Instrument [Line Items]
Economic Interest (as a percent)		20.00%	20.00%
Interest rate, fixed rate debt (as a percent)		5.99%	5.99%
Total fixed rate debt		$ 120,000	$ 120,000	0
Total floating rate debt		0	0	124,137
Due from joint ventures | 15 Beekman | A fund managed by Meritz Alternative Investment Management | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		24,000	24,000	0
Total floating rate debt		$ 0	$ 0	24,827
Due from joint ventures | 800 Third Avenue | Private Investors
Debt Instrument [Line Items]
Economic Interest (as a percent)		60.52%	60.52%
Interest rate, fixed rate debt (as a percent)		3.37%	3.37%
Total fixed rate debt		$ 177,000	$ 177,000	177,000
Due from joint ventures | 800 Third Avenue | Private Investors | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 107,120	$ 107,120	107,120
Due from joint ventures | 1515 Broadway | Allianz Real Estate of America
Debt Instrument [Line Items]
Economic Interest (as a percent)		56.87%	56.87%
Due from joint ventures | 919 Third Avenue | New York State Teacher's Retirement System
Debt Instrument [Line Items]
Economic Interest (as a percent)		51.00%	51.00%
Interest rate, fixed rate debt (as a percent)		6.11%	6.11%
Total fixed rate debt		$ 500,000	$ 500,000	500,000
Due from joint ventures | 919 Third Avenue | New York State Teacher's Retirement System | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 255,000	$ 255,000	255,000
Due from joint ventures | 280 Park Avenue | Vornado Realty Trust
Debt Instrument [Line Items]
Economic Interest (as a percent)		50.00%	50.00%
Interest rate, fixed rate debt (as a percent)		5.84%	5.84%
Total fixed rate debt		$ 1,075,000	$ 1,075,000	0
Total floating rate debt		0	0	1,200,000
Due from joint ventures | 280 Park Avenue | Vornado Realty Trust | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		537,500	537,500	0
Total floating rate debt		$ 0	$ 0	600,000
Due from joint ventures | 245 Park Avenue | U.S. Affiliate of Mori Trust Co., Ltd
Debt Instrument [Line Items]
Economic Interest (as a percent)		50.10%	50.10%
Interest rate, fixed rate debt (as a percent)		4.30%	4.30%
Total fixed rate debt		$ 1,768,000	$ 1,768,000	1,768,000
Due from joint ventures | 245 Park Avenue | U.S. Affiliate of Mori Trust Co., Ltd | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 885,768	$ 885,768	885,768
Due from joint ventures | One Madison Avenue | National Pension Service of Korea / Hines Interest LP / International Investor
Debt Instrument [Line Items]
Economic Interest (as a percent)		25.50%	25.50%
Interest rate, fixed rate debt (as a percent)		7.10%	7.10%
Interest rate, floating rate debt (as a percent)		3.10%	3.10%
Total fixed rate debt		$ 658,357	$ 658,357	733,103
Total floating rate debt		354,757	354,757	0
Due from joint ventures | One Madison Avenue | National Pension Service of Korea / Hines Interest LP / International Investor | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		167,881	167,881	186,941
Total floating rate debt		$ 90,463	$ 90,463	0
Due from joint ventures | Worldwide Plaza | RXR Realty / New York REIT
Debt Instrument [Line Items]
Economic Interest (as a percent)		24.95%	24.95%
Interest rate, fixed rate debt (as a percent)		3.98%	3.98%
Total fixed rate debt		$ 1,200,000	$ 1,200,000	1,200,000
Due from joint ventures | Worldwide Plaza | RXR Realty / New York REIT | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 299,400	$ 299,400	299,400
Due from joint ventures | 220 East 42nd Street | A fund managed by Meritz Alternative Investment Management
Debt Instrument [Line Items]
Economic Interest (as a percent)		51.00%	51.00%
Interest rate, fixed rate debt (as a percent)		6.77%	6.77%
Total fixed rate debt		$ 496,412	$ 496,412	505,412
Due from joint ventures | 220 East 42nd Street | A fund managed by Meritz Alternative Investment Management | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 253,170	$ 253,170	257,760
Due from joint ventures | One Vanderbilt Avenue | National Pension Service of Korea / Hines Interest LP / Mori Building Co., Ltd
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)		2.95%	2.95%
Total fixed rate debt		$ 3,000,000	$ 3,000,000	3,000,000
Due from joint ventures | One Vanderbilt Avenue | National Pension Service of Korea / Hines Interest LP / Mori Building Co., Ltd | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		1,800,300	1,800,300	2,130,300
Due from joint ventures | 5 Times Square | RXR Realty led investment group
Debt Instrument [Line Items]
Total fixed rate debt		0	0	477,783
Total floating rate debt		0	0	610,010
Due from joint ventures | 5 Times Square | RXR Realty led investment group | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		0	0	150,740
Total floating rate debt		$ 0	$ 0	192,458
Due from joint ventures | 625 Madison Avenue | Private Investors
Debt Instrument [Line Items]
Economic Interest (as a percent)		90.93%	90.93%
Total fixed rate debt		$ 0	$ 0	199,987
Due from joint ventures | 625 Madison Avenue | Private Investors | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		0	0	180,848
Due from joint ventures | 10 East 53rd Street | Canadian Pension Plan Investment Board
Debt Instrument [Line Items]
Total fixed rate debt		0	0	220,000
Due from joint ventures | 10 East 53rd Street | Canadian Pension Plan Investment Board | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		0	0	121,000
Due from joint ventures | 717 Fifth Avenue | Wharton Properties / Private Investor
Debt Instrument [Line Items]
Total fixed rate debt		0	0	655,328
Due from joint ventures | 717 Fifth Avenue | Wharton Properties / Private Investor | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 0	$ 0	71,536
Due from joint ventures | 11 West 34th Street | Private Investor / Wharton Properties
Debt Instrument [Line Items]
Economic Interest (as a percent)		30.00%	30.00%
Interest rate, floating rate debt (as a percent)		1.45%	1.45%
Total floating rate debt		$ 23,000	$ 23,000	23,000
Due from joint ventures | 11 West 34th Street | Private Investor / Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 6,900	$ 6,900	6,900
Due from joint ventures | 1552 Broadway | Wharton Properties
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)		2.75%	2.75%
Total floating rate debt		$ 193,132	$ 193,132	193,133
Due from joint ventures | 1552 Broadway | Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 96,566	$ 96,566	96,567
Due from joint ventures | 2 Herald Square | Israeli Institutional Investor
Debt Instrument [Line Items]
Economic Interest (as a percent)		95.00%	95.00%
Total floating rate debt		$ 0	$ 0	182,500
Due from joint ventures | 2 Herald Square | Israeli Institutional Investor | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 0	$ 0	93,075
Due from joint ventures | 100 Park Avenue | Prudential Real Estate Investors
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)
Total floating rate debt		$ 0	$ 0	360,000
Due from joint ventures | 100 Park Avenue | Prudential Real Estate Investors | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 0	$ 0	179,640
Due from joint ventures | Mortgage loan | 650 Fifth Avenue | Wharton Properties
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)		5.45%	5.45%
Total fixed rate debt		$ 65,000	$ 65,000	65,000
Due from joint ventures | Mortgage loan | 650 Fifth Avenue | Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 32,500	$ 32,500	32,500
Due from joint ventures | Mortgage loan | 1515 Broadway | Allianz Real Estate of America
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)		3.93%	3.93%
Total fixed rate debt		$ 740,947	$ 740,947	762,002
Due from joint ventures | Mortgage loan | 1515 Broadway | Allianz Real Estate of America | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		421,369	421,369	$ 433,344
Due from joint ventures | Construction Loans | One Madison Avenue
Debt Instrument [Line Items]
Maximum facility capacity		$ 1,250,000	$ 1,250,000