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 ($)	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Debt Instrument [Line Items]
Total fixed rate debt	$ 1,667,249,000		$ 1,667,249,000	$ 1,587,474,000
Total floating rate debt	376,153,000		376,153,000	363,550,000
Allowance for loan Loss	0		0		$ 0
Additional amount of financing receivables included in other assets	31,500,000		31,500,000
Financing receivable, excluding accrued interest, initial credit loss expense (reversal)	66,000,000	$ 99,000,000	165,037,000	0
Due from joint venture
Debt Instrument [Line Items]
Total fixed rate debt	11,542,915,000		11,542,915,000	11,551,101,000
Total floating rate debt	863,650,000		863,650,000	780,889,000
Total fixed rate and floating rate debt	12,406,565,000		12,406,565,000	12,331,990,000
Deferred financing costs, net	(87,590,000)		(87,590,000)	(97,729,000)
Total joint venture mortgages and other loans payable, net	12,318,975,000		12,318,975,000	12,234,261,000
Additional amount of financing receivables included in other assets	63,000,000.0		63,000,000.0
Financing receivable, excluding accrued interest, initial credit loss expense (reversal)	132,000,000
Due from joint venture | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	5,723,399,000		5,723,399,000	5,728,933,000
Total floating rate debt	320,033,000		320,033,000	298,929,000
Total fixed rate and floating rate debt	6,043,432,000		6,043,432,000	6,027,862,000
Deferred financing costs, net	(43,647,000)		(43,647,000)	(49,058,000)
Total joint venture mortgages and other loans payable, net	5,999,785,000		5,999,785,000	5,978,804,000
Due from joint venture | One Madison Avenue | Construction Loans
Debt Instrument [Line Items]
Maximum facility capacity	$ 1,250,000,000		$ 1,250,000,000
Wharton Properties | Due from joint venture | 650 Fifth Avenue
Debt Instrument [Line Items]
Economic interest (as a percent)	50.00%		50.00%
Interest rate, fixed rate debt (as a percent)	5.45%		5.45%
Interest rate, floating rate debt (as a percent)	2.25%		2.25%
Total fixed rate debt	$ 65,000,000		$ 65,000,000	65,000,000
Total floating rate debt	210,000,000		210,000,000	210,000,000
Wharton Properties | Due from joint venture | 650 Fifth Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	32,500,000		32,500,000	32,500,000
Total floating rate debt	$ 105,000,000		$ 105,000,000	105,000,000
Wharton Properties | Due from joint venture | 1552 Broadway
Debt Instrument [Line Items]
Economic interest (as a percent)	50.00%		50.00%
Interest rate, floating rate debt (as a percent)	2.75%		2.75%
Total floating rate debt	$ 193,132,000		$ 193,132,000	193,132,000
Wharton Properties | Due from joint venture | 1552 Broadway | Common Stock
Debt Instrument [Line Items]
Total floating rate debt	$ 96,566,000		$ 96,566,000	96,566,000
Private Investors | Due from joint venture | 115 Spring Street
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	$ 65,550,000		$ 65,550,000	65,550,000
Private Investors | Due from joint venture | 115 Spring Street | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 33,431,000		$ 33,431,000	33,431,000
Private Investors | Due from joint venture | 800 Third Avenue
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	$ 177,000,000		$ 177,000,000	177,000,000
Private Investors | Due from joint venture | 800 Third Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 107,120,000		$ 107,120,000	107,120,000
PGIM Real Estate | Due from joint venture | 11 Madison Avenue
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	$ 1,400,000,000		$ 1,400,000,000	1,400,000,000
PGIM Real Estate | Due from joint venture | 11 Madison Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 840,000,000		$ 840,000,000	840,000,000
A fund managed by Meritz Alternative Investment Management | Due from joint venture | 15 Beekman
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	$ 120,000,000		$ 120,000,000	120,000,000
A fund managed by Meritz Alternative Investment Management | Due from joint venture | 15 Beekman | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 24,000,000		$ 24,000,000	24,000,000
A fund managed by Meritz Alternative Investment Management | Due from joint venture | 220 East 42nd Street
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	$ 496,412,000		$ 496,412,000	496,412,000
A fund managed by Meritz Alternative Investment Management | Due from joint venture | 220 East 42nd Street | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 253,170,000		$ 253,170,000	253,170,000
Allianz Real Estate of America | Due from joint venture | 1515 Broadway
Debt Instrument [Line Items]
Economic interest (as a percent)	56.87%		56.87%
Interest rate, fixed rate debt (as a percent)	3.93%		3.93%
Total fixed rate debt	$ 730,017,000		$ 730,017,000	740,947,000
Allianz Real Estate of America | Due from joint venture | 1515 Broadway | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 415,154,000		$ 415,154,000	421,369,000
New York State Teacher's Retirement System | Due from joint venture | 919 Third Avenue
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	$ 500,000,000		$ 500,000,000	500,000,000
New York State Teacher's Retirement System | Due from joint venture | 919 Third Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 255,000,000		$ 255,000,000	255,000,000
Korean Institutional Investor / Israeli Institutional Investor | Due from joint venture | 450 Park Avenue
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	$ 289,257,000		$ 289,257,000	284,835,000
Korean Institutional Investor / Israeli Institutional Investor | Due from joint venture | 450 Park Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 72,603,000		$ 72,603,000	71,494,000
Vornado Realty Trust | Due from joint venture | 280 Park Avenue
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%
Vornado Realty Trust | Due from joint venture | 280 Park Avenue | Mortgage loan
Debt Instrument [Line Items]
Total fixed rate debt	$ 1,075,000,000		$ 1,075,000,000	1,075,000,000
Vornado Realty Trust | Due from joint venture | 280 Park Avenue | Common Stock | Mortgage loan
Debt Instrument [Line Items]
Total fixed rate debt	$ 537,500,000		$ 537,500,000	537,500,000
U.S. Affiliate of Mori Trust Co., Ltd | Due from joint venture | 245 Park Avenue
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	$ 1,768,000,000		$ 1,768,000,000	1,768,000,000
U.S. Affiliate of Mori Trust Co., Ltd | Due from joint venture | 245 Park Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 885,768,000		$ 885,768,000	885,768,000
National Pension Service of Korea / Hines Interest LP / International Investor | Due from joint venture | One Madison Avenue
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	$ 656,679,000		$ 656,679,000	658,357,000
Total floating rate debt	437,518,000		437,518,000	354,757,000
National Pension Service of Korea / Hines Interest LP / International Investor | Due from joint venture | One Madison Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	167,453,000		167,453,000	167,881,000
Total floating rate debt	$ 111,567,000		$ 111,567,000	90,463,000
RXR Realty / New York REIT | Due from joint venture | Worldwide Plaza
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	$ 1,200,000,000		$ 1,200,000,000	1,200,000,000
RXR Realty / New York REIT | Due from joint venture | Worldwide Plaza | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 299,400,000		$ 299,400,000	299,400,000
National Pension Service of Korea / Hines Interest LP | Due from joint venture | One Vanderbilt Avenue
Debt Instrument [Line Items]
Economic interest (as a percent)	60.01%		60.01%
Interest rate, fixed rate debt (as a percent)	2.95%		2.95%
Total fixed rate debt	$ 3,000,000,000		$ 3,000,000,000	3,000,000,000
National Pension Service of Korea / Hines Interest LP | Due from joint venture | One Vanderbilt Avenue | Common Stock
Debt Instrument [Line Items]
Total fixed rate debt	$ 1,800,300,000		$ 1,800,300,000	1,800,300,000
Wharton Properties / Private Investor | Due from joint venture | 11 West 34th Street
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	$ 23,000,000		$ 23,000,000	23,000,000
Wharton Properties / Private Investor | Due from joint venture | 11 West 34th Street | Common Stock
Debt Instrument [Line Items]
Total floating rate debt	$ 6,900,000		$ 6,900,000	$ 6,900,000