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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% |  |  |  |  |

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