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Investments in Unconsolidated Joint Ventures (Statements of Operations of the Joint Ventures) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Total revenue |  | $ 859,227 | $ 824,283 |  | $ 2,549,148 | $ 2,444,636 |
Expenses |  |  |  |  |  |  |
Transaction costs |  | 188 | 751 |  | 890 | 1,970 |
Depreciation and amortization |  | 222,890 | 207,435 |  | 661,148 | 618,746 |
Total expenses |  | 597,809 | 552,714 |  | 1,790,774 | 1,672,241 |
Other income (expense) |  |  |  |  |  |  |
Interest expense |  | (163,194) | (147,812) |  | (474,727) | (424,492) |
Net Loss |  | 108,452 | (103,543) |  | 322,005 | 138,269 |
Income (Loss) from Equity Method Investments |  | (7,011) | (247,556) |  | 6,376 | (261,793) |
Unconsolidated Joint Ventures [Member] |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Total revenue | [1] | 128,435 | 153,551 |  | 378,981 | 469,745 |
Expenses |  |  |  |  |  |  |
Operating |  | 53,280 | 65,119 |  | 148,929 | 183,348 |
Transaction costs |  | 53 | 78 |  | 61 | 179 |
Depreciation and amortization |  | 41,082 | 49,840 |  | 118,901 | 151,051 |
Total expenses |  | 94,415 | 115,037 |  | 267,891 | 334,578 |
Other income (expense) |  |  |  |  |  |  |
Losses from early extinguishment of debt |  | 0 | 0 |  | 0 | (3) |
Interest expense |  | (45,244) | (60,737) |  | (132,106) | (176,786) |
Unrealized gain (loss) on derivative instruments |  | (19,172) | 10,242 |  | (8,212) | 14,089 |
Net Loss |  | (30,396) | (11,981) |  | (29,228) | (27,533) |
Company's share of net income (loss) |  | (9,319) | (4,476) |  | (9,105) | (10,739) |
Gain on Unconsolidated Joint Venture Investment |  | 0 | 35,756 | [2] | 0 | 35,756 | [2]
Gain on sale / consolidation |  | 0 | 0 |  | 21,696 | 0 |
Impairment loss on investment |  | 0 | (272,603) | [3] | 0 | (272,603) | [3]
Basis differential | [4] | 2,308 | (6,233) |  | (6,215) | (14,207) |
Income (Loss) from Equity Method Investments |  | (7,011) | (247,556) |  | 6,376 | (261,793) |
Straight Line Rent Adjustments |  | 2,600 | 7,700 |  | 16,500 | 20,900 |
Unconsolidated Joint Ventures [Member] | Basis Differential |  |  |  |  |  |  |
Expenses |  |  |  |  |  |  |
Depreciation and amortization |  | 3,900 | 4,100 |  | 6,800 | 7,800 |
Other income (expense) |  |  |  |  |  |  |
Straight Line Rent Adjustments |  | 300 | 400 |  | 1,000 | 1,100 |
Above and below market rent adjustments, net |  | 200 | 200 |  | 600 | 600 |
Derivative, Gain (Loss) on Derivative, Net |  | $ 5,100 | 2,700 |  | $ 4,900 | 6,600 |
Unconsolidated Joint Ventures [Member] | Impairment Losses on Investments |  |  |  |  |  |  |
Other income (expense) |  |  |  |  |  |  |
Impairment loss on investment |  |  | $ 272,600 |  |  | $ 272,600 |
[1] | Includes straight-line rent adjustments of approximately $2.6 million and $7.7 million for the three months ended September 30, 2024 and 2023, respectively, and approximately $16.5 million and $20.9 million for the nine months ended September 30, 2024 and 2023, respectively.
[2] | During the three months ended September 30, 2023, the Company completed a restructuring of its ownership in Metropolitan Square.
[3] | During the three and nine months ended September 30, 2023, the Company recognized an other-than-temporary impairment loss on its investments in Platform 16, 360 Park Avenue South, 200 Fifth Avenue and Safeco Plaza aggregating approximately $272.6 million.
[4] | Includes depreciation and amortization of approximately $3.9 million and $4.1 million for the three months ended September 30, 2024 and 2023, respectively, and approximately $6.8 million and $7.8 million for the nine months ended September 30, 2024 and 2023, respectively. Includes unrealized loss on derivative instruments of approximately $5.1 million and $2.7 million for the three months ended September 30, 2024 and 2023, respectively, and approximately $4.9 million and $6.6 million for the nine months ended September 30, 2024 and 2023, respectively. Includes straight-line rent adjustments of approximately $0.3 million and $0.4 million for the three months ended September 30, 2024 and 2023, respectively, and approximately $1.0 million and $1.1 million for the nine months ended September 30, 2024 and 2023, respectively. Also includes net above-/below-market rent adjustments of approximately $0.2 million for the three months ended September 30, 2024 and 2023, and approximately $0.6 million for the nine months ended September 30, 2024 and 2023.

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