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)	1 Months Ended	12 Months Ended
	Jan. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) extension	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Total fixed rate debt		$ 1,387,386,000	$ 3,165,814,000
Total floating rate debt		110,000,000	70,148,000
Repayments of mortgages		25,826,000	292,364,000	$ 375,044,000
245 Park Avenue
Debt Instrument [Line Items]
Total fixed rate debt		0	1,712,750,000
Due from joint ventures
Debt Instrument [Line Items]
Total fixed rate debt		12,000,559,000	10,855,657,000
Total floating rate debt		2,902,780,000	1,629,980,000
Total joint venture mortgages and other loans payable		14,903,339,000	12,485,637,000
Deferred financing costs, net		(104,062,000)	(136,683,000)
Total joint venture mortgages and other loans payable, net		14,799,277,000	12,348,954,000
Due from joint ventures | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		6,053,808,000	5,478,032,000
Total floating rate debt		1,298,467,000	694,887,000
Total joint venture mortgages and other loans payable		7,352,275,000	6,172,919,000
Deferred financing costs, net		(54,865,000)	(66,910,000)
Total joint venture mortgages and other loans payable, net		$ 7,297,410,000	6,106,009,000
Due from joint ventures | 717 Fifth Avenue | Wharton Properties / Private Investor
Debt Instrument [Line Items]
Economic Interest (as a percent)		10.92%
Due from joint ventures | 650 Fifth Avenue | Wharton Properties
Debt Instrument [Line Items]
Economic Interest (as a percent)		50.00%
Interest rate, floating rate debt (as a percent)		2.25%
Total floating rate debt		$ 210,000,000	210,000,000
Maturity date of the loan, extended		2 months
Due from joint ventures | 650 Fifth Avenue | Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 105,000,000	105,000,000
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%
Interest rate, fixed rate debt (as a percent)		5.86%
Total fixed rate debt		$ 505,412,000	510,000,000
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		$ 257,760,000	260,100,000
Due from joint ventures | 5 Times Square (4) | RXR Realty led investment group
Debt Instrument [Line Items]
Economic Interest (as a percent)		31.55%
Interest rate, fixed rate debt (as a percent)		7.13%
Interest rate, floating rate debt (as a percent)		5.65%
Total fixed rate debt		$ 477,783,000	400,000,000
Total floating rate debt		610,010,000	495,924,000
Due from joint ventures | 5 Times Square (4) | RXR Realty led investment group | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		150,740,000	126,200,000
Total floating rate debt		$ 192,458,000	156,464,000
Due from joint ventures | 10 East 53rd Street | Canadian Pension Plan Investment Board
Debt Instrument [Line Items]
Economic Interest (as a percent)		55.00%
Interest rate, fixed rate debt (as a percent)		5.45%
Total fixed rate debt		$ 220,000,000	220,000,000
Due from joint ventures | 10 East 53rd Street | Canadian Pension Plan Investment Board | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 121,000,000	121,000,000
Due from joint ventures | 1515 Broadway | Allianz Real Estate of America
Debt Instrument [Line Items]
Economic Interest (as a percent)		56.87%
Interest rate, fixed rate debt (as a percent)		3.93%
Total fixed rate debt		$ 762,002,000	782,321,000
Due from joint ventures | 1515 Broadway | Allianz Real Estate of America | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		433,344,000	444,898,000
Due from joint ventures | 115 Spring Street (2) | RXR Realty led investment group
Debt Instrument [Line Items]
Total floating rate debt		0	65,550,000
Due from joint ventures | 115 Spring Street (2) | RXR Realty led investment group | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 0	33,431,000
Due from joint ventures | 115 Spring Street (2) | Private Investors
Debt Instrument [Line Items]
Economic Interest (as a percent)		51.00%
Interest rate, fixed rate debt (as a percent)		5.50%
Total fixed rate debt		$ 65,550,000	0
Due from joint ventures | 115 Spring Street (2) | Private Investors | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 33,431,000	0
Due from joint ventures | 450 Park Avenue | Korean Institutional Investor / Israeli Institutional Investor
Debt Instrument [Line Items]
Economic Interest (as a percent)		25.10%
Interest rate, fixed rate debt (as a percent)		6.10%
Total fixed rate debt		$ 271,394,000	267,000,000
Due from joint ventures | 450 Park Avenue | Korean Institutional Investor / Israeli Institutional Investor | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 68,120,000	67,017,000
Due from joint ventures | 11 Madison Avenue | PGIM Real Estate
Debt Instrument [Line Items]
Economic Interest (as a percent)		60.00%
Interest rate, fixed rate debt (as a percent)		3.84%
Total fixed rate debt		$ 1,400,000,000	1,400,000,000
Due from joint ventures | 11 Madison Avenue | PGIM Real Estate | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 840,000,000	840,000,000
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%
Interest rate, fixed rate debt (as a percent)		3.59%
Total fixed rate debt		$ 733,103,000	467,008,000
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		$ 186,941,000	119,087,000
Due from joint ventures | 800 Third Avenue | Private Investors
Debt Instrument [Line Items]
Economic Interest (as a percent)		60.52%
Interest rate, fixed rate debt (as a percent)		3.37%
Total fixed rate debt		$ 177,000,000	177,000,000
Due from joint ventures | 800 Third Avenue | Private Investors | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 107,120,000	107,120,000
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%
Interest rate, fixed rate debt (as a percent)		6.11%
Total fixed rate debt		$ 500,000,000	500,000,000
Due from joint ventures | 919 Third Avenue | New York State Teacher's Retirement System | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 255,000,000	255,000,000
Due from joint ventures | 625 Madison Avenue | Private Investors
Debt Instrument [Line Items]
Economic Interest (as a percent)		90.43%
Debt instrument, face amount		$ 168,900,000
Debt Instrument, Increase, Accrued Interest		$ 31,100,000
Due from joint ventures | 625 Madison Avenue | New York State Teacher's Retirement System
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)		5.11%
Total fixed rate debt		$ 199,987,000	0
Due from joint ventures | 625 Madison Avenue | New York State Teacher's Retirement System | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 180,848,000	0
Due from joint ventures | 245 Park Avenue | New York State Teacher's Retirement System
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)		4.30%
Total fixed rate debt		$ 1,768,000,000	0
Due from joint ventures | 245 Park Avenue | New York State Teacher's Retirement System | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 885,768,000	0
Due from joint ventures | Worldwide Plaza (4) | RXR Realty / New York REIT
Debt Instrument [Line Items]
Economic Interest (as a percent)		24.95%
Interest rate, fixed rate debt (as a percent)		3.98%
Total fixed rate debt		$ 1,200,000,000	1,200,000,000
Due from joint ventures | Worldwide Plaza (4) | RXR Realty / New York REIT | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 299,400,000	299,400,000
Due from joint ventures | One Vanderbilt Avenue | National Pension Service of Korea / Hines Interest LP
Debt Instrument [Line Items]
Economic Interest (as a percent)		71.01%
Interest rate, fixed rate debt (as a percent)		2.95%
Total fixed rate debt		$ 3,000,000,000	3,000,000,000
Due from joint ventures | One Vanderbilt Avenue | National Pension Service of Korea / Hines Interest LP | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 2,130,300,000	2,130,300,000
Due from joint ventures | 280 Park Avenue | RXR Realty led investment group
Debt Instrument [Line Items]
Interest rate, floating rate debt (as a percent)		2.03%
Due from joint ventures | 280 Park Avenue | Vornado Realty Trust
Debt Instrument [Line Items]
Economic Interest (as a percent)		50.00%
Total fixed rate debt		$ 0	1,200,000,000
Total floating rate debt		1,200,000,000	0
Due from joint ventures | 280 Park Avenue | Vornado Realty Trust | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		0	600,000,000
Total floating rate debt		600,000,000	0
Due from joint ventures | 21 East 66th Street | RXR Realty led investment group
Debt Instrument [Line Items]
Total floating rate debt		0	586,000
Due from joint ventures | 21 East 66th Street | RXR Realty led investment group | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		0	188,000
Due from joint ventures | 21 East 66th Street | Vornado Realty Trust
Debt Instrument [Line Items]
Total fixed rate debt		0	12,000,000
Due from joint ventures | 21 East 66th Street | Vornado Realty Trust | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 0	3,874,000
Due from joint ventures | 11 West 34th Street (2) | Private Investor / Wharton Properties
Debt Instrument [Line Items]
Economic Interest (as a percent)		30.00%
Interest rate, floating rate debt (as a percent)		1.45%
Total floating rate debt		$ 23,000,000	23,000,000
Due from joint ventures | 11 West 34th Street (2) | Private Investor / Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 6,900,000	6,900,000
Due from joint ventures | 2 Herald Square | Subsequent Event
Debt Instrument [Line Items]
Repayments of mortgages	$ 7,000,000
Due from joint ventures | 2 Herald Square | Israeli Institutional Investor
Debt Instrument [Line Items]
Economic Interest (as a percent)		51.00%
Interest rate, floating rate debt (as a percent)		2.06%
Total floating rate debt		$ 182,500,000	182,500,000
Due from joint ventures | 2 Herald Square | Israeli Institutional Investor | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 93,075,000	93,075,000
Due from joint ventures | 100 Park Avenue | Prudential Real Estate Investors
Debt Instrument [Line Items]
Economic Interest (as a percent)		49.90%
Interest rate, floating rate debt (as a percent)		2.36%
Total floating rate debt		$ 360,000,000	360,000,000
Due from joint ventures | 100 Park Avenue | Prudential Real Estate Investors | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 179,640,000	179,640,000
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%
Interest rate, floating rate debt (as a percent)		1.61%
Total floating rate debt		$ 124,137,000	86,738,000
Due from joint ventures | 15 Beekman | A fund managed by Meritz Alternative Investment Management | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 24,827,000	17,348,000
Due from joint ventures | 1552 Broadway | Wharton Properties
Debt Instrument [Line Items]
Economic Interest (as a percent)		50.00%
Interest rate, floating rate debt (as a percent)		2.75%
Total floating rate debt		$ 193,133,000	193,132,000
Due from joint ventures | 1552 Broadway | Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		96,567,000	96,566,000
Due from joint ventures | 121 Greene Street | Wharton Properties
Debt Instrument [Line Items]
Total floating rate debt		0	12,550,000
Due from joint ventures | 121 Greene Street | Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total floating rate debt		$ 0	6,275,000
Due from joint ventures | Mortgage loan | 717 Fifth Avenue | Wharton Properties / Private Investor
Debt Instrument [Line Items]
Interest rate, fixed rate debt (as a percent)		5.02%
Total fixed rate debt		$ 655,328,000	655,328,000
Due from joint ventures | Mortgage loan | 717 Fifth Avenue | Wharton Properties / Private Investor | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		$ 71,536,000	71,536,000
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%
Total fixed rate debt		$ 65,000,000	65,000,000
Due from joint ventures | Mortgage loan | 650 Fifth Avenue | Wharton Properties | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt		32,500,000	$ 32,500,000
Due from joint ventures | Construction Loans | One Madison Avenue
Debt Instrument [Line Items]
Maximum facility capacity		$ 1,250,000,000
Term		5 years
Number of extension options | extension		1
Period of extension option		1 year
Due from joint ventures | Construction Loans | 15 Beekman
Debt Instrument [Line Items]
Maximum facility capacity		$ 125,000,000