| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| REVENUE | | | | | | | |
| Property rental | 499.6 | 459.0 | 493.3 | 513.4 | | | |
| Third-party real estate services, including reimbursements | 114.0 | 113.9 | 120.9 | 98.7 | 63.2 | 33.9 | |
| Other revenue | 20.8 | 29.8 | 33.6 | 32.0 | | 5.4 | 10.9 |
| Total revenue | 634.4 | 602.7 | 647.8 | 644.2 | 543.0 | 478.5 | 470.6 |
| Total revenue growth | 5.2% | -7.0% | 0.6% | 18.6% | 13.5% | 1.7% | |
| EXPENSES | | | | | | | |
| Depreciation and amortization | 236.3 | 221.8 | 191.6 | 211.4 | 161.7 | 133.3 | 145.0 |
| Property operating | 150.6 | 145.6 | 137.6 | 148.1 | 118.8 | 100.3 | 101.5 |
| Real estate taxes | 70.8 | 71.0 | 70.5 | 71.1 | 66.4 | 57.8 | 58.9 |
| |
| General and administrative: | | | | | | | |
| Corporate and other | 53.8 | 46.6 | 46.8 | 33.7 | 39.4 | 48.8 | 44.4 |
| Third-party real estate services | 107.2 | 114.8 | 113.5 | 89.8 | 51.9 | 19.1 | 18.2 |
| Share-based compensation related to Formation Transaction and special equity awards | 16.3 | 31.7 | 42.2 | 36.0 | 29.3 | | |
| Transaction and other costs | 10.4 | 8.7 | 23.2 | 27.7 | 127.7 | | |
| Total expenses | 645.5 | 640.2 | 625.4 | 617.9 | | | |
| |
| OTHER INCOME (EXPENSE) | | | | | | | |
| Income (loss) from unconsolidated real estate ventures, net | -2.1 | -20.3 | -1.4 | 39.4 | -4.1 | -0.9 | -4.3 |
| Interest and other income, net | 8.8 | 0.6 | 5.4 | 15.2 | 1.8 | 3.0 | 2.6 |
| Interest expense | -68.0 | -62.3 | -52.7 | -74.4 | -58.1 | -51.8 | -50.8 |
| Loss on the extinguishment of debt | | -0.1 | -5.8 | -5.2 | -0.7 | | |
| Total other income (expense) | -75.1 | -34.1 | 50.5 | 19.6 | -36.8 | -49.7 | |
| INCOME (LOSS) BEFORE INCOME TAX EXPENSE | -86.2 | -71.5 | 72.8 | 45.9 | -89.0 | 63.1 | 50.0 |
| Income tax expense | -3.5 | 4.3 | 1.3 | 0.7 | 9.9 | -1.1 | -0.4 |
| NET INCOME (LOSS) | -89.7 | -67.3 | 74.1 | 46.6 | -79.1 | 62.0 | 49.6 |
| |
| Net (income) loss attributable to redeemable noncontrolling interests | | | | | | | |
| Net loss attributable to noncontrolling interests | | | | | | | |
| NET INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS | -79.3 | -62.3 | 65.6 | 39.9 | -71.8 | 62.0 | 49.6 |
| |
| EARNINGS (LOSS) PER COMMON SHARE: | | | | | | | |
| EARNINGS (LOSS) PER COMMON SHARE - BASIC | ($0.63) | ($0.49) | $0.48 | $0.31 | ($0.70) | $0.62 | $0.49 |
| EARNINGS (LOSS) PER COMMON SHARE - DILUTED | ($0.63) | ($0.49) | $0.48 | $0.31 | ($0.70) | $0.62 | $0.49 |
| |
| WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING - BASIC | 130.8 | 133.5 | 130.7 | 119.2 | 105.4 | 100.6 | 100.6 |
| WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING - DILUTED | 130.8 | 133.5 | 130.7 | 119.2 | 105.4 | 100.6 | |