| Fiscal period | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 |
|---|
| Period End Date | 12/31/2020 | 12/31/2019 | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 | 12/31/2014 | 12/31/2013 | 12/31/2012 | 12/31/2011 |
|---|
| Rental Revenue | -- | -- | -- | -- | 417.71 | 420.34 | 386.40 | 377.61 | 353.08 | 332.86 |
| Tenant recoveries and other real estate operations revenue | -- | -- | -- | -- | 108.25 | 98.72 | 93.33 | 83.39 | 81.22 | 75.76 |
| Lease revenue | 536.13 | 522.47 | 512.33 | 504.89 | -- | -- | -- | -- | -- | -- |
| Construction contract and other service revenues | 70.64 | 113.76 | 60.86 | 102.84 | 48.36 | 106.40 | 106.75 | 62.36 | 73.84 | 84.35 |
| Other service operations revenues | 2.60 | 4.99 | 4.93 | 5.09 | -- | -- | -- | -- | -- | -- |
| Total Revenues | 609.37 | 641.23 | 578.11 | 612.82 | 574.33 | 625.47 | 586.47 | 523.36 | 508.14 | 492.96 |
| Property operating expenses | 203.84 | 198.14 | 201.04 | 190.96 | 197.53 | 194.49 | 179.93 | 167.20 | 159.21 | 154.38 |
| Construction contract expenses | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Other service operations expenses | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Construction contract and other service expenses | 67.62 | 109.96 | 58.33 | 99.62 | 45.48 | 102.70 | 100.06 | 58.88 | 70.58 | 81.64 |
| Depreciation and other amortization associated with real estate operations | 138.19 | 137.07 | 137.12 | 134.23 | 132.72 | 140.03 | 136.09 | 113.21 | 108.00 | 107.00 |
| General and administrative expenses | 33.00 | 35.40 | 28.90 | 30.84 | 36.55 | 31.36 | 31.79 | 30.87 | 31.90 | 30.31 |
| Impairment loss | (1.53) | (0.33) | (2.37) | (15.12) | (101.39) | (23.29) | (1.42) | (5.86) | (43.68) | (83.21) |
| Business development expenses | (4.47) | (4.24) | (5.84) | (6.21) | (8.24) | (13.51) | (5.57) | (5.44) | (5.71) | (6.12) |
| Total operating expenses | 448.65 | 485.14 | 433.58 | 476.98 | 521.92 | 505.37 | 454.86 | 381.45 | 419.07 | 462.66 |
| Operating Income (Loss) | -- | -- | -- | -- | -- | 120.09 | 131.61 | 141.91 | 89.07 | 30.30 |
| Interest expense | 67.94 | 71.05 | 75.39 | 76.98 | 83.16 | 89.07 | 92.39 | 82.01 | 86.40 | 90.04 |
| Gain on sale of non-real estate investment | 29.42 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| (Loss) gain on sales of real estate | 30.21 | 105.23 | 2.34 | 9.89 | 59.68 | -- | -- | -- | -- | -- |
| Equity in loss of unconsolidated Service Companies | -- | -- | -- | -- | -- | -- | -- | -- | (0.55) | (0.33) |
| Equity in income (loss) of unconsolidated real estate joint ventures | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interests : Common units in the Operating Partnership | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interests : Preferred units in the Operating Partnership | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interests : Other consolidated entities | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Interest and other income | 8.57 | 7.89 | 4.36 | 6.32 | 5.44 | 4.52 | 4.92 | 3.83 | 7.17 | 5.60 |
| Amortization of deferred financing costs | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain on early extinguishment of debt | (7.31) | -- | (0.26) | (0.51) | (1.11) | 85.28 | (9.55) | (27.03) | (0.94) | (1.64) |
| Loss on interest rate derivatives | (53.20) | -- | -- | -- | -- | -- | -- | -- | -- | (29.81) |
| Credit loss expense | 0.93 | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income from continuing operations before income taxes and minority interests | 101.41 | 198.15 | 75.58 | 74.55 | 33.26 | 120.81 | 34.59 | 36.70 | 8.35 | (85.91) |
| Income tax expense | 0.35 | (0.22) | (0.36) | 1.10 | 0.24 | 0.20 | 0.31 | 1.98 | 0.38 | (6.71) |
| Deferred Tax : Federal | -- | -- | -- | -- | -- | -- | -- | -- | 0.31 | 5.51 |
| Deferred Tax : State | -- | -- | -- | -- | -- | -- | -- | -- | 0.07 | 1.22 |
| Current Tax : Federal | -- | -- | -- | -- | -- | -- | -- | -- | -- | (0.02) |
| Current Tax : State | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.00 |
| Reported on line entitled gain on sales of real estate, net | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interests in income from continuing operations : Common units in the Operating Partnership | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interests in income from continuing operations : Preferred units in the Operating Partnership | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Minority interests in income from continuing operations : Other consolidated entities | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Equity in loss of unconsolidated entities | 1.83 | 1.63 | 2.70 | 1.49 | 0.75 | 0.06 | 0.23 | 2.11 | -- | -- |
| Gain (loss) on sales of real estate | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Income from continuing operations | -- | -- | -- | -- | -- | 120.68 | 34.51 | 36.84 | 7.97 | (79.20) |
| Income from discontinued operations, net of minority interests | -- | -- | -- | -- | -- | 0.16 | 0.03 | 55.69 | 12.35 | (51.11) |
| Income before extraordinary item and cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Extraordinary item-loss on early retirement of debt, net of minority interests | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Gain (loss) on sales of real estate | -- | -- | -- | -- | -- | 68.05 | 10.67 | 9.02 | 0.02 | 2.73 |
| Cumulative effect of accounting change, net of minority interests | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income (loss) | 102.88 | 200.00 | 78.64 | 74.94 | 33.77 | 188.88 | 45.21 | 101.54 | 20.34 | (127.58) |
| Net income attributable to noncontrolling interests : Common units in the Operating Partnership | 1.18 | 2.36 | 1.74 | 1.89 | 0.51 | 6.40 | 1.01 | 3.28 | (0.09) | (8.44) |
| Net income attributable to noncontrolling interests : Preferred units in the Operating Partnership | 0.30 | 0.56 | 0.66 | 0.66 | 0.66 | 0.66 | 0.66 | 0.66 | 0.66 | 0.66 |
| Net income attributable to noncontrolling interests : Other | 4.02 | 5.39 | 3.94 | 3.65 | 3.71 | 3.52 | 3.29 | 3.89 | (1.21) | (0.37) |
| Net income (loss) attributable to Corporate Office Properties Trust | -- | -- | -- | 68.75 | 28.89 | 178.30 | 40.26 | 93.71 | -- | -- |
| Preferred Share dividends | -- | -- | -- | 6.22 | 14.30 | 14.21 | 15.94 | 19.97 | 20.84 | 16.10 |
| Issuance costs associated with redeemed preferred shares | -- | -- | -- | 6.85 | 0.02 | -- | 1.77 | 2.90 | 1.83 | -- |
| Repurchase of preferred units in excess of recorded book value | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net income available to common shareholders | 97.37 | 191.69 | 72.30 | 55.68 | 14.58 | 164.09 | 22.55 | 70.83 | (1.69) | (135.53) |
| Income from continuing operations | -- | -- | -- | -- | -- | 1.74 | 0.25 | 0.21 | (0.19) | (1.28) |
| EPS (Basic) : Income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | 0.62 | 0.16 | (0.69) |
| Extraordinary item | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Basic) | 0.87 | 1.72 | 0.69 | 0.56 | 0.15 | 1.74 | 0.25 | 0.83 | (0.03) | (1.97) |
| Income from continuing operations | -- | -- | -- | -- | -- | 1.74 | 0.25 | 0.21 | (0.19) | (1.28) |
| EPS (Diluted) : Income from discontinued operations | -- | -- | -- | -- | -- | -- | -- | 0.62 | 0.16 | (0.69) |
| Extraordinary item | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Cumulative effect of accounting change | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Net Earnings Per Share (Diluted) | 0.87 | 1.71 | 0.69 | 0.56 | 0.15 | 1.74 | 0.25 | 0.83 | (0.03) | (1.97) |
| Weighted Average Share Outstanding (Basic) | 111.79 | 111.20 | 103.95 | 98.97 | 94.50 | 93.91 | 88.09 | 85.17 | 73.45 | 69.38 |
| Weighted Average Share Outstanding (Diluted) | 112.08 | 111.62 | 104.13 | 99.16 | 94.59 | 97.67 | 88.26 | 85.22 | 73.45 | 69.38 |
| Funds from operations (FFO) | 186.31 | 234.88 | 218.04 | 217.45 | 198.29 | 268.95 | 177.55 | 242.31 | 191.96 | 72.75 |