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Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Aug. 31, 2024	Apr. 30, 2024	Mar. 29, 2024
Schedule Of Equity Method Investments [Line Items]
Investments in unconsolidated joint ventures	$ 85,952	$ 132,239
Loss from unconsolidated joint ventures	$ (47,359)	$ (270,298)	$ (53,251)
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	50.00%
Market Center [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	67.00%	67.00%		67.00%
Loss from unconsolidated joint ventures		$ (161,514)	(10,405)
55 Second Street [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	44.10%
Investments in unconsolidated joint ventures		30,322
Loss from unconsolidated joint ventures	$ (30,221)	(55,018)	(2,943)
111 Sutter Street [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	49.00%				49.00%
Loss from unconsolidated joint ventures			(35,190)
1600 Broadway [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	9.20%
Investments in unconsolidated joint ventures	$ 8,161	8,646
Loss from unconsolidated joint ventures	$ 1		(9)
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	5.00%					5.00%
Investments in unconsolidated joint ventures	$ 1,212
Loss from unconsolidated joint ventures	$ (1,525)	(25,001)	(89)
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	35.00%
Investments in unconsolidated joint ventures	$ 76,579	89,949
Loss from unconsolidated joint ventures	$ (11,577)	(28,727)	(4,696)
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method paramount ownership percentage	9.50%
Investments in unconsolidated joint ventures		3,322
Loss from unconsolidated joint ventures	$ (4,037)	$ (38)	$ 81