| In millions, except per share items | Dec-31-22 | 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 | 10-K |
| Revenues [Abstract] | | | | | | | | |
| Rental income | 388.2 | 219.9 | 254.6 | 229.2 | 162.5 | 156.5 | | |
| |
| Expenses: | | | | | | | | |
| Real estate taxes | 50.6 | 30.1 | 35.2 | 30.4 | 19.3 | 17.9 | 17.2 | |
| Other operating expenses | 30.9 | 18.7 | 20.7 | 17.6 | 13.0 | 10.9 | 10.6 | |
| Depreciation and amortization | 161.0 | 50.6 | 70.5 | 61.9 | 28.6 | 27.3 | 27.1 | 25.3 |
| General and administrative | 32.9 | 16.7 | 0.2 | 17.2 | 11.3 | 16.8 | 9.2 | 8.7 |
| Acquisition and other transaction related costs | 0.6 | 1.1 | 19.6 | | | 1.0 | 0.0 | |
| Loss on impairment of real estate | 100.7 | | | | | | | |
| Total expenses | 376.7 | 117.3 | 146.2 | 127.1 | 72.2 | 73.9 | 64.1 | 74.1 |
| Interest and other income | 2.7 | | 0.1 | 0.7 | 0.2 | | | |
| Interest expense | -280.1 | -35.6 | -51.6 | -50.8 | -16.1 | -2.4 | -2.3 | |
| (Loss) gain on sale of real estate | 0.0 | 12.1 | 24.0 | | | | | |
| Loss on equity securities | -5.8 | | | | | | | |
| (Loss) gain on early extinguishment of debt | -22.2 | | 0.1 | | | | | |
| (Loss) income before income tax expense and equity in earnings of unconsolidated joint venture | -293.9 | 79.0 | 81.0 | 52.0 | 74.4 | 80.1 | 86.9 | 71.7 |
| Income tax expense | 0.0 | -0.3 | -0.3 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 |
| Tax rate | | 0.3% | 0.3% | | 0.0% | 0.1% | 0.1% | 0.1% |
| Equity in earnings of unconsolidated joint venture | 7.1 | 40.9 | 0.5 | 0.7 | | | | |
| Net (loss) income | -286.8 | 119.7 | 81.2 | | | | | |
| Net loss attributable to noncontrolling interest | 60.1 | | 0.9 | | | | | |
| Net (loss) income attributable to common shareholders | -226.7 | 119.7 | 82.1 | 52.5 | 74.4 | 80.1 | 86.9 | 71.6 |
| |
| Other comprehensive income: | | | | | | | | |
| Unrealized gain on derivatives | 30.2 | | | | | | | |
| Less: unrealized gain on derivatives attributable to noncontrolling interest | -8.3 | | | | | | | |
| Other comprehensive income attributable to common shareholders | 21.9 | | | | | | | |
| Comprehensive (loss) income attributable to common shareholders | -204.8 | 119.7 | 82.1 | | | | | |
| |
| Weighted average common shares outstanding - basic (in shares) | 65.2 | 65.2 | 65.1 | 65.0 | 64.1 | 45.0 | 45.0 | 45.0 |
| Weighted average common shares outstanding - diluted (in shares) | 65.2 | 65.2 | 65.1 | 65.1 | 64.1 | 45.0 | 45.0 | |
| |
| Per common share data (basic and diluted): | | | | | | | | |
| Net (loss) income attributable to common shareholders, basic (in usd per share) | ($3.47) | $1.83 | $1.26 | $0.81 | $1.16 | $1.78 | $1.93 | $1.59 |
| Net | ($3.47) | $1.83 | $1.26 | $0.81 | $1.16 | $1.78 | $1.93 | $1.59 |