| Fiscal period | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|
| Period End Date | 12/31/2024 | 12/31/2023 | 12/31/2022 | 12/31/2021 | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
|---|
| Rental revenue, net | 606.00 | 683.34 | 671.50 | 678.18 | 804.42 | 983.56 | 864.98 | 1,100.99 | 1,323.77 | 1,245.98 |
| Signage rent | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Preferred equity and investment income | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Investment income | 24.35 | 34.71 | 81.11 | 80.34 | 120.16 | 195.59 | 201.49 | 193.87 | 213.01 | 181.13 |
| Interest income from real estate loans held by consolidated securitization vehicles | 18.98 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other Revenue | 103.73 | 77.41 | 74.13 | 85.48 | 128.16 | 59.85 | 47.33 | 43.67 | 130.35 | 57.21 |
| Escalation and reimbursement | -- | -- | -- | -- | -- | -- | 113.60 | 172.94 | 196.86 | 178.51 |
| SUMMIT Operator revenue | 133.21 | 118.26 | -- | -- | -- | -- | -- | -- | -- | -- |
| Total Revenues | 886.27 | 913.71 | 826.74 | 843.99 | 1,052.74 | 1,239.00 | 1,227.39 | 1,511.47 | 1,863.98 | 1,662.83 |
| Ground rent | -- | -- | -- | -- | -- | 33.19 | 32.97 | 33.23 | 33.26 | 32.83 |
| Operating lease rent | 24.42 | 27.29 | 26.94 | 26.55 | 29.04 | -- | -- | -- | -- | -- |
| Real estate taxes | 128.19 | 143.76 | 138.23 | 152.84 | 176.32 | 190.76 | 186.35 | 244.32 | 248.39 | 232.70 |
| Operating expenses | 189.60 | 196.70 | 174.06 | 167.15 | 183.20 | 234.68 | 229.35 | 293.36 | 312.86 | 301.62 |
| SUMMIT Operator expenses | 111.74 | 101.21 | -- | -- | -- | -- | -- | -- | -- | -- |
| Depreciation and amortization | 207.44 | 247.81 | 215.31 | 216.87 | 313.67 | 272.36 | 279.51 | 403.32 | 821.04 | 560.89 |
| Amortization of deferred financing costs | 6.62 | 7.84 | 7.82 | 11.42 | 11.79 | 11.65 | 12.41 | 16.50 | 24.56 | 27.35 |
| Marketing, general and administrative | 85.19 | 111.39 | 93.80 | 94.91 | 91.83 | 100.88 | 92.63 | 100.50 | 99.76 | 94.87 |
| Loan loss and other investment reserves | -- | (6.89) | -- | (2.93) | 35.30 | -- | (6.84) | -- | -- | -- |
| Transaction related costs | (0.40) | (1.10) | (0.41) | (3.77) | 0.50 | (0.73) | (1.10) | 1.83 | (7.53) | (11.43) |
| SUMMIT Operator tax expense | (0.73) | (9.20) | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest expense on senior obligations of consolidated securitization vehicles | (14.63) | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Total operating expenses | -- | 990.30 | 746.04 | 747.34 | 958.33 | 1,034.76 | 1,049.82 | 1,346.45 | 1,868.60 | 1,585.57 |
| Interest | 147.22 | 137.11 | 89.47 | 70.89 | 116.68 | 190.52 | 208.67 | 257.05 | 321.20 | 323.87 |
| Gain (loss) on investment in marketable securities | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Equity in net income of unconsolidated joint ventures | -- | -- | -- | -- | -- | (34.52) | 7.31 | 21.89 | 11.87 | 13.03 |
| Equity in net (loss) income from affiliates | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Loss on equity investment in marketable securities | -- | -- | -- | -- | -- | -- | -- | 3.26 | (0.08) | 0.00 |
| Equity in net gain on sale of interest in unconsolidated joint ventures | 208.14 | (13.37) | (0.13) | (32.76) | 2.96 | -- | -- | 16.17 | 44.01 | 15.84 |
| Loss on early extinguishment of debt | -- | (0.87) | 0.00 | (1.55) | -- | -- | -- | -- | -- | -- |
| Gain on early extinguishment of debt | 43.76 | -- | -- | -- | -- | -- | (17.08) | -- | -- | (0.05) |
| Purchase price fair value adjustment | 88.97 | (17.26) | (8.12) | 210.07 | 187.52 | 69.39 | 57.39 | -- | -- | 40.08 |
| Depreciable real estate reserves | (104.07) | (382.37) | (6.31) | (23.79) | (60.45) | (7.05) | (227.54) | (178.52) | (10.39) | (19.23) |
| Income from continuing operations before minority interest and discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interest in other partnerships | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interest in Operating partnership attributable to continuing operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interest in partially-owned entities | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Equity in net gain on sale of joint venture property | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on sale of real estate | 3.03 | (32.37) | (84.49) | 287.42 | 215.51 | (16.75) | (30.76) | 73.24 | 238.12 | 175.97 |
| Gain on sale of partial interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on sale of rental properties/preferred investment, net of transaction and deferred compensation costs | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Equity in net gain on sale of interest in unconsolidated joint ventures/ real estate | (179.70) | (76.51) | (57.96) | (55.40) | (25.20) | 76.18 | 303.97 | -- | -- | -- |
| Income from continuing operations | -- | -- | -- | -- | -- | -- | -- | 101.07 | 278.91 | 302.91 |
| Net income from discontinued operations, net of minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.43 |
| Gain on sale of discontinued operations, net of minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | 14.12 |
| Income before extraordinary items and cumulative effect adjustment | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Extraordinary item, net of minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income (loss) | 30.22 | (599.34) | (76.30) | 480.63 | 414.76 | 291.49 | 270.86 | 101.07 | 278.91 | 317.46 |
| Net income attributable to noncontrolling interests in other partnerships | (0.93) | (4.57) | 1.12 | (1.88) | 14.94 | (3.16) | (0.01) | (15.70) | 7.64 | 15.84 |
| Net income attributable to noncontrolling interests in the Operating Partnership | 0.50 | (37.47) | (5.79) | 25.46 | 20.02 | 13.30 | 12.22 | 4.00 | 10.14 | 10.57 |
| Preferred Unit Distributions | 8.64 | 7.26 | 6.44 | 7.31 | 8.75 | 10.91 | 11.38 | 11.40 | 11.24 | 6.97 |
| Less: Preferred stock dividends | 14.95 | 14.95 | 14.95 | 14.95 | 14.95 | 14.95 | -- | -- | -- | -- |
| Preferred stock redemption costs | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Preferred stock accretion | -- | -- | 2.22 | 2.40 | 1.69 | -- | -- | -- | -- | -- |
| Dividends on perpetual preferred shares | -- | -- | -- | 0.19 | 0.08 | -- | 14.95 | 14.95 | 14.95 | 14.95 |
| Net income available to common stockholders | 7.06 | (579.51) | (95.24) | 432.21 | 354.34 | 255.48 | 232.31 | 86.42 | 234.95 | 269.13 |
| Income attributable to SL Green common stockholders | -- | -- | (101.04) | 459.90 | 376.12 | -- | -- | -- | -- | -- |
| Net income from continuing operations before gain on sale and discontinued operations | -- | -- | -- | -- | -- | -- | -- | 1.85 | (0.28) | 0.54 |
| Net income before gain on sale and extraordinary items | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Basic) : Gain on sale of discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on sale of joint venture property/ partial interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on sale | -- | -- | -- | -- | -- | -- | -- | 0.75 | 2.43 | 1.81 |
| Gain on sale of discontinued operations, net of minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.15 |
| Extraordinary items | -- | -- | -- | -- | -- | -- | -- | -- | (0.11) | (0.20) |
| Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate | -- | -- | -- | -- | -- | -- | -- | 0.17 | 0.45 | 0.16 |
| Depreciable real estate reserves | -- | -- | -- | -- | -- | -- | -- | (1.84) | -- | -- |
| Cumulative effect of chance in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Purchase price fair value adjustment | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.41 |
| Net Earnings Per Share (Basic) | 0.08 | (9.12) | (1.49) | 6.57 | 5.03 | 3.29 | 2.83 | 0.93 | 2.49 | 2.87 |
| Net income from continuing operations before gain on sale and discontinued operations | -- | -- | -- | -- | -- | -- | -- | 1.85 | (0.27) | 0.54 |
| Net income before gain on sale and extraordinary items | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| EPS (Diluted) : Gain on sale of discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on sale of joint venture property/ partial interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on sale | -- | -- | -- | -- | -- | -- | -- | 0.75 | 2.41 | 1.80 |
| Gain on sale of discontinued operations, net of minority interest | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.15 |
| Extraordinary items | -- | -- | -- | -- | -- | -- | -- | -- | (0.11) | (0.20) |
| Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate | -- | -- | -- | -- | -- | -- | -- | 0.17 | 0.45 | 0.16 |
| Depreciable real estate reserves | -- | -- | -- | -- | -- | -- | -- | (1.85) | -- | -- |
| Cumulative effect of change in accounting principle | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Purchase price fair value adjustment | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.41 |
| Net Earnings Per Share (Diluted) | 0.08 | (9.12) | (1.49) | 6.50 | 5.02 | 3.29 | 2.83 | 0.92 | 2.48 | 2.86 |
| Weighted Average Shares Outstanding (Basic) | 65.06 | 63.81 | 63.92 | 65.74 | 70.40 | 77.05 | 81.79 | 92.93 | 94.45 | 93.66 |
| Weighted Average Shares Outstanding (Diluted) | 65.69 | 67.97 | 67.93 | 70.77 | 74.95 | 81.61 | 86.29 | 97.48 | 98.88 | 97.79 |
| Funds From operations | 569.82 | 341.34 | 458.83 | 481.23 | 562.73 | 605.70 | 605.72 | 667.29 | 869.86 | 661.83 |