| In millions, except per share items | Mar-31-18 | Dec-31-17 | Sep-30-17 | Jun-30-17 | Mar-31-17 | Dec-31-16 | Sep-30-16 | Jun-30-16 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Revenues: | | | | | | | | |
| Tenant recoveries | 11.8 | 11.5 | 11.6 | 11.7 | 11.7 | 1.5 | 1.5 | 1.5 |
| Total revenues | 280.2 | 328.7 | 361.7 | 429.4 | 473.7 | 471.2 | 509.4 | 531.7 |
| Total revenues growth | -40.8% | -30.2% | -29.0% | -19.2% | | | | |
| Costs and expenses: | | | | | | | | |
| Depreciation and amortization | 127.2 | 131.6 | 136.0 | 140.4 | 140.6 | 165.6 | 188.4 | 214.5 |
| Operating | 13.0 | 12.6 | 13.0 | 13.4 | 13.5 | 3.7 | 3.9 | 3.9 |
| General and administrative | 27.9 | 27.2 | 26.2 | 26.3 | 23.4 | 22.1 | 20.7 | 17.6 |
| Restructuring costs | 25.6 | 18.5 | 13.4 | 7.9 | 3.2 | | | |
| Interest | -142.3 | -140.5 | -104.8 | -69.7 | -34.2 | | | |
| Impairments | 448.6 | 445.7 | 537.9 | 549.1 | | 167.1 | 201.4 | |
| Total costs and expenses | 784.7 | 776.2 | 856.2 | 831.8 | 407.1 | 383.4 | 414.4 | 416.2 |
| |
| Other income: | | | | | | | | |
| Gain on sales of real estate | | | | 4.1 | 0.9 | 4.1 | | 39.1 |
| Other income, net | 5.7 | 2.8 | 0.4 | 0.4 | 0.3 | 0.3 | 0.3 | 0.1 |
| Total other income, net | 5.7 | 6.1 | 7.8 | 7.8 | 7.7 | 10.9 | 45.2 | 45.7 |
| (Loss) income before income taxes | -20.3 | | | | 37.1 | | | |
| Income tax expense | 2.2 | 2.1 | 34.2 | 29.8 | 29.8 | 17.5 | -17.8 | -12.4 |
| Tax rate | | -5.6% | -92.2% | -80.4% | -80.4% | | | |
| Net (loss) income and comprehensive (loss) income | -500.7 | -443.5 | -487.4 | -399.8 | 69.2 | 81.1 | 185.9 | 132.4 |
| Noncontrolling interests' share in earnings | -0.1 | -0.1 | -0.1 | 0.0 | 0.0 | | | |
| Net (loss) income and comprehensive (loss) income attributable to the Company | -500.8 | -443.5 | -487.5 | -399.9 | 69.2 | 81.1 | 97.2 | 118.7 |
| Less: preferred share dividends | -0.1 | -0.2 | -0.2 | -0.2 | -0.1 | | | |
| Net (loss) income and comprehensive (loss) income attributable to common shareholders | -501.0 | -443.8 | -487.7 | -400.1 | 69.1 | 81.1 | 185.9 | 132.4 |
| |
| (Loss) earnings per common share, basic and diluted | ($5.35) | ($4.74) | ($5.21) | ($4.28) | $0.73 | $0.86 | $1.98 | $1.41 |