| In millions, except per share items | 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 |
| Operating activities: | | | | | | | |
| Net loss | -105.4 | -130.8 | -185.5 | -228.0 | -46.0 | 188.9 | 39.6 |
| Adjustments to reconcile net loss to net cash from (used in) operating activities: | | | | | | | |
| Depreciation and amortization | 82.2 | 81.0 | 61.6 | 27.0 | 7.5 | 1.1 | 0.0 |
| Impairment | 4.5 | 12.7 | 40.1 | 57.9 | | | |
| Share-based compensation | 5.9 | 3.0 | 4.1 | 1.3 | 0.2 | 0.2 | 0.2 |
| Amortization of deferred financing costs | 5.4 | 6.1 | 7.4 | 12.5 | 7.3 | 3.4 | 1.1 |
| Insurance recoveries | -0.7 | -0.6 | -3.3 | | | | |
| Change in fair value of interest rate cap derivatives in profit or loss | 5.0 | 1.3 | | | | | |
| Changes in operating assets and liabilities: | | | | | | | |
| Accounts receivable | 5.6 | 2.5 | -2.0 | 1.7 | -22.6 | -3.5 | |
| Deferred leasing costs | -2.8 | -5.0 | -2.8 | | | | |
| Prepaid expenses and other assets | 11.9 | -19.4 | -2.1 | -4.5 | 0.0 | -0.3 | -0.1 |
| Accounts payable and accrued liabilities | -3.6 | 12.7 | -0.6 | 19.4 | 16.6 | 0.5 | 3.2 |
| Payable to AAMC | 1.0 | -0.2 | -1.1 | 5.3 | -33.4 | 27.5 | 5.8 |
| Net cash provided by (used in) operating activities | -2.8 | -35.9 | -48.2 | -113.1 | -217.7 | -173.6 | -22.6 |
| |
| Investing activities: | | | | | | | |
| Investment in real estate | -49.1 | -475.8 | -135.1 | -299.6 | -120.0 | -34.1 | -6.2 |
| Investment in renovations | -30.7 | -32.8 | -38.1 | | | | |
| Payment of real estate tax advances | -0.1 | -0.3 | -4.2 | -23.5 | | | |
| Proceeds from mortgage loan resolutions and dispositions | 4.3 | 6.0 | 527.2 | 543.1 | 468.1 | 334.4 | 39.0 |
| Receipt of mortgage loan payments | 0.2 | 0.3 | 7.2 | | | | |
| Proceeds from dispositions of real estate | 191.0 | 81.7 | 264.2 | 378.0 | | | |
| Net cash (used in) provided by investing activities | 117.4 | -429.6 | 621.2 | 567.5 | 489.9 | -974.9 | -1,206.2 |
| |
| Financing activities: | | | | | | | |
| Proceeds from issuance of common stock, including stock option exercises | | | | | | 491.4 | 684.6 |
| Payment of tax withholdings on share-based compensation plan awards | -0.1 | | -0.1 | 0.0 | -0.1 | -7.7 | -0.1 |
| Dividends on common stock | 32.2 | -32.3 | -32.2 | -38.3 | | | |
| Proceeds from repurchase and loan agreements | 91.5 | 1,116.0 | 112.3 | 793.4 | 347.1 | 1,094.0 | 689.5 |
| Repayments of repurchase and loan agreements | -173.2 | -659.4 | -462.8 | -823.2 | -594.6 | -681.4 | -87.1 |
| Payment of financing costs | -1.6 | -10.7 | -8.1 | -11.3 | -9.8 | -5.4 | -3.3 |
| Principal repayments of finance leases | -1.0 | | | | | | |
| Net cash provided by (used in) financing activities | -117.7 | 385.2 | -540.8 | -462.4 | -214.4 | 1,098.7 | 1,244.8 |
| Net change in cash, cash equivalents and restricted cash | -3.2 | -80.3 | 32.3 | -8.0 | 57.8 | | |
| |
| Supplemental disclosure of cash flow information: | | | | | | | |
| Cash paid for: | | | | | | | |
| Interest | 73.0 | 69.6 | 52.9 | 39.8 | 47.3 | 31.2 | 2.4 |
| Income taxes | | 0.1 | 0.0 | 0.2 | 0.1 | 0.0 | |
| Non-cash transactions: | | | | | | | |
| Transfer of mortgage loans to real estate owned, net | 4.1 | 4.9 | 40.4 | | | | |
| Changes in receivables from real estate owned dispositions | 6.8 | -2.3 | -13.5 | -4.4 | 15.3 | 4.6 | |
| Change in other comprehensive loss from cash flow hedges | -7.3 | -12.7 | | | | | |
| Right-of-use lease assets recognized - operating leases | 1.5 | | | | | | |
| Right-of-use lease assets recognized - finance leases | 2.0 | | | | | | |
| Operating lease liabilities incurred | 1.5 | | | | | | |