Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Aug. 31, 2024	Apr. 30, 2024	Mar. 29, 2024
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	50.00%					50.00%
55 Second Street [Member]
Schedule Of Equity Method Investments [Line Items]
Proportionate share of real estate impairment loss	$ 38,429	$ 52,590				$ 38,429	$ 52,590
Equity method paramount ownership percentage	44.10%					44.10%
Recognized real estate impairment loss	$ 29,818					$ 29,818
Real estate impairment loss	$ 87,160	119,279				$ 87,160	119,279
Market Center [Member]
Schedule Of Equity Method Investments [Line Items]
Proportionate share of real estate impairment loss		$ 229,054					$ 229,054
Equity method paramount ownership percentage	67.00%	67.00%				67.00%	67.00%		67.00%
Recognized real estate impairment loss		$ 148,906					$ 148,906
Real estate impairment loss		$ 341,872					341,872
111 Sutter Street [Member]
Schedule Of Equity Method Investments [Line Items]
Proportionate share of real estate impairment loss					$ 31,685			$ 31,685
Equity method paramount ownership percentage	49.00%					49.00%				49.00%
Real estate impairment loss					$ 64,663			$ 64,663
1600 Broadway [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity	$ 299					$ 299
Equity method paramount ownership percentage	9.20%					9.20%
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Proportionate share of real estate impairment loss				$ 24,734			24,734
Equity method paramount ownership percentage	5.00%					5.00%					5.00%
Real estate impairment loss				$ 455,893			455,893
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Difference between carrying amount of investment and equity	$ 511					$ 511
Equity method paramount ownership percentage	35.00%					35.00%
Equity method economic interest percentage	2.60%					2.60%
Impairment loss on for sale condominium units	$ 32,366		$ 68,407			$ 32,366	68,407
One Steuart Lane [Member] | Residential Development Fund's [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	7.40%					7.40%
Proportionate share of impairment loss on for sale condominium units	$ 11,328		$ 23,942			$ 11,328	$ 23,942
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Proportionate share of real estate impairment loss	$ 3,915					$ 3,915
Equity method paramount ownership percentage	9.50%					9.50%