Segments - Schedule of Paramount's Share of Net Operating Income for Each Reportable Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Property-related revenues		$ 172,825	$ 183,104	$ 354,819	$ 365,733
Less property-related operating expenses:
Real estate related taxes		(37,837)	(37,873)	(76,705)	(74,424)
Other operating expenses	[1]	(37,047)	(36,319)	(76,229)	(71,508)
NOI attributable to noncontrolling interests in consolidated joint ventures		(20,616)	(23,901)	(42,699)	(46,809)
NOI from unconsolidated joint ventures		5,036	5,625	9,963	11,227
Paramount's share of NOI	[2]	82,361	90,636	169,149	184,219
New York [Member]
Segment Reporting Information [Line Items]
Property-related revenues		109,290	113,482	223,857	231,286
Less property-related operating expenses:
Real estate related taxes		(29,065)	(28,875)	(58,856)	(57,751)
Other operating expenses	[1]	(22,046)	(22,191)	(48,081)	(43,629)
NOI attributable to noncontrolling interests in consolidated joint ventures		(3,462)	(2,500)	(6,708)	(5,176)
NOI from unconsolidated joint ventures		3,306	3,480	6,464	7,035
Paramount's share of NOI	[2]	58,023	63,396	116,676	131,765
San Francisco [Member]
Segment Reporting Information [Line Items]
Property-related revenues		62,953	69,624	129,941	134,814
Less property-related operating expenses:
Real estate related taxes		(8,772)	(8,998)	(17,849)	(16,673)
Other operating expenses	[1]	(12,605)	(13,130)	(23,567)	(26,220)
NOI attributable to noncontrolling interests in consolidated joint ventures		(17,154)	(21,401)	(35,991)	(41,633)
NOI from unconsolidated joint ventures		1,680	2,063	3,390	4,110
Paramount's share of NOI	[2]	26,102	28,158	55,924	54,398
Other [Member]
Segment Reporting Information [Line Items]
Property-related revenues		582	(2)	1,021	(367)
Less property-related operating expenses:
Real estate related taxes		0	0	0	0
Other operating expenses	[1]	(2,396)	(998)	(4,581)	(1,659)
NOI attributable to noncontrolling interests in consolidated joint ventures		0	0	0	0
NOI from unconsolidated joint ventures		50	82	109	82
Paramount's share of NOI	[2]	$ (1,764)	$ (918)	$ (3,451)	$ (1,944)

[1] Primarily comprised of cleaning, security, repairs and maintenance, and utilities.

[2] NOI is used to measure the operating performance of our properties. NOI consists of rental revenue (which includes property rentals, tenant reimbursements and lease termination income) and certain other property-related revenue less operating expenses (which includes property-related expenses such as cleaning, security, repairs and maintenance, utilities, property administration and real estate taxes). We present Paramount’s share of NOI which represents our share of NOI of consolidated and unconsolidated joint ventures, based on our percentage ownership in the underlying assets. We use NOI internally as a performance measure and believe it provides useful information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. Other real estate companies may use different methodologies for calculating NOI and, accordingly, our presentation of NOI may not be comparable to other real estate companies.