| In millions, except per share items | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| REVENUES: | | | | | | | | |
| Rental revenues | 554.1 | 736.9 | 829.1 | | | | | |
| Management, development and leasing fees | 6.8 | 9.4 | 10.5 | | | | | |
| Total revenues | 18.5 | 25.2 | 25.3 | 927.3 | 1,028.3 | 1,055.0 | 1,060.7 | 1,053.6 |
| Total revenues growth | -26.4% | -0.3% | -97.3% | -9.8% | -2.5% | -0.5% | 0.7% | 5.1% |
| EXPENSES: | | | | | | | | |
| Property operating | -84.1 | -108.9 | -122.0 | -128.0 | | | | |
| Depreciation and amortization | 215.0 | 257.7 | 285.4 | 299.1 | 292.7 | 299.1 | 291.3 | 278.9 |
| Real estate taxes | -69.7 | -75.5 | -82.3 | -83.9 | | | | |
| Maintenance and repairs | -34.1 | -46.3 | -48.3 | -48.6 | | | | |
| General and administrative | 53.4 | 64.2 | 61.5 | 58.5 | 63.3 | 62.1 | 50.3 | 48.9 |
| Loss on impairment | -213.4 | -239.5 | -174.5 | -71.4 | -116.8 | 105.9 | 17.9 | 70.0 |
| Other | -1.0 | -0.1 | -0.8 | -5.2 | -20.3 | 27.0 | 32.3 | 28.8 |
| |
| OTHER INCOME (EXPENSES): | | | | | | | | |
| Interest and other income | 6.4 | 2.8 | 1.9 | 1.7 | | 6.5 | 14.1 | 10.8 |
| Interest expense | -200.7 | -206.3 | -220.0 | -218.7 | -216.3 | -229.3 | -239.8 | -231.9 |
| Gain on extinguishment of debt | 32.5 | 71.7 | | 30.9 | | 0.3 | | -9.1 |
| Gain on deconsolidation | | 67.2 | | -6.2 | 7.5 | 16.6 | 87.9 | 2.4 |
| Income tax benefit (provision) | -16.8 | -3.2 | 1.6 | -1.9 | 2.1 | -2.9 | -4.5 | -1.3 |
| Equity in losses of unconsolidated affiliates | -14.9 | 4.9 | 14.7 | 22.9 | 117.5 | 18.2 | 14.8 | 11.6 |
| Net loss | -335.5 | -131.7 | -99.2 | 159.0 | 195.5 | | 253.0 | 115.3 |
| |
| Net loss attributable to noncontrolling interests in: | | | | | | | | |
| Operating Partnership | 19.8 | 23.7 | 19.7 | -25.4 | | | | |
| Other consolidated subsidiaries/Net loss attributable to noncontrolling interests | 19.8 | 23.7 | 19.7 | -25.4 | | | | |
| Net loss attributable to the Company | -295.1 | -108.8 | -78.6 | 120.9 | | | | 110.4 |
| Preferred dividends undeclared | -37.4 | -11.2 | | | | | | |
| Net loss attributable to common shareholders | -332.5 | -153.7 | -123.5 | 76.0 | 195.5 | | 253.0 | 115.3 |
| |
| Distributions to preferred unitholders undeclared | | | | | | | | |
| Basic and diluted per share data attributable to common shareholders: | | | | | | | | |
| Net loss attributable to common shareholders | ($1.75) | ($0.89) | ($0.72) | $0.44 | | | | $0.24 |
| |
| Weighted-average common and potential dilutive common shares/units outstanding | 190.3 | 173.4 | 172.5 | 171.1 | 370.5 | 370.2 | 369.9 | 363.6 |