| Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Net income (loss) | 8 | 30 | -1,419,277 | 53 | 46 | 61 | 75 | 46 | 160 | 203 | 348 | -430 |
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| Net income (loss) from discontinued operations, net of tax | - | - | - | - | - | - | - | - | - | - | -3 | -18 |
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| Net income (loss) from continuing operations | - | - | - | 56 | 46 | 61 | - | - | - | - | 351 | -412 |
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| Amortization of Debt Issuance Costs and Discounts | - | - | - | - | - | - | 14 | 34 | -24 | 3 | 67 | 53 |
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| Stock-based compensation | - | - | - | - | - | - | - | - | 7 | 8 | 8 | 8 |
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| Provision for loan losses | - | - | - | 8 | 2 | 2 | 4 | 35 | 8 | 34 | 7 | 293 |
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| Impairment of Real Estate | - | - | - | - | - | - | 1 | 4 | 2 | 4 | 9 | 57 |
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| Repair and denial reserve (recovery) | - | - | - | - | - | -0 | -0 | 4 | 10 | -9 | -4 | 0 |
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| Paid-in-kind accrued interest | - | - | - | - | - | - | - | - | - | - | - | 78 |
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| Provision for loan losses on purchased future receivables | - | - | - | - | - | - | 5 | 12 | 1 | 3 | 9 | 2 |
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| Loans, held for sale, net | - | - | - | - | - | 2,587 | 2,629 | 5,153 | 5,475 | 281 | 18 | 326 |
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| Loan Held for Sale, Valuation Allowance | - | - | - | - | - | - | - | - | - | - | - | 125 |
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| Net income (loss) of unconsolidated joint ventures, net of distributions | - | - | - | - | - | -1 | 6 | 2 | -1 | 9 | -3 | 8 |
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| Realized (gains) losses, net | - | - | - | - | - | - | 102 | 263 | 183 | 61 | 66 | -54 |
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| Unrealized (gains) losses, net | - | - | - | - | - | - | -19 | -52 | 43 | 70 | 9 | -15 |
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| Bargain purchase gain | - | - | - | - | - | - | - | - | - | - | - | 14 |
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| Derivative instruments | - | - | - | - | - | - | - | - | 63 | -57 | -12 | -5 |
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| Assets of consolidated VIEs (excluding loans, net), accrued interest and due from servicers | - | - | - | - | - | 12 | 21 | -12 | -6 | 32 | 28 | 61 |
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| Receivable from third parties | - | - | - | - | -0 | 2 | -8 | 0 | -10 | -14 | 21 | -2 |
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| Other assets | 1 | -559,791 | -1,614,564 | 13 | 14 | -1 | 26 | -17 | 7 | 5 | 92 | 59 |
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| Accounts payable and other accrued liabilities | - | - | - | 10 | 9 | 0 | 25 | 43 | 30 | -58 | 56 | -22 |
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| Net cash provided by operating activities from continuing operations | 8 | -4,689,880 | -23,081,128 | 16 | 352 | 140 | - | - | - | - | 101 | 286 |
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| Cash Provided by (Used in) Operating Activities, Discontinued Operations | - | - | - | -2 | - | - | - | - | - | - | -50 | -12 |
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| Net cash provided by operating activities | - | - | - | - | - | - | -52 | 69 | -34 | 359 | 51 | 275 |
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| Origination of loans | - | - | - | - | - | 935 | 1,307 | 775 | 3,826 | 3,303 | 1,005 | 826 |
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| Purchase of loans | - | - | - | 99 | 147 | 369 | 739 | 243 | 142 | 678 | - | - |
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| Proceeds from disposition and principal payment of loans | - | - | - | - | - | 746 | 827 | 961 | 977 | 1,475 | 1,780 | 2,274 |
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| Funding of investments held to maturity | - | - | - | - | - | - | - | - | - | 6 | 0 | - |
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| Proceeds from Sale and Maturity of Held-to-Maturity Securities | - | - | - | - | - | - | - | - | - | 27 | - | - |
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| Proceeds from sale and principal payment of mortgage-backed securities | - | - | - | 297 | 10 | 30 | 14 | 12 | 2,016 | 62 | 8 | - |
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| Funding of real estate, held for sale | - | - | - | - | - | - | - | - | - | 11 | 12 | 1 |
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| Proceeds from Sale, Property, Held-for-Sale | - | - | - | - | 5 | 2 | 19 | 17 | 42 | 8 | 78 | 67 |
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| Investment in unconsolidated joint ventures | - | - | - | - | 54 | - | 27 | 24 | 60 | 122 | 25 | 33 |
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| Proceeds from Equity Method Investment, Distribution, Return of Capital | - | - | - | - | - | 21 | 16 | 5 | 18 | 29 | 8 | 14 |
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| Payment of liabilities under participation agreements | - | - | - | 2 | 1 | 1 | - | - | - | 19 | 9 | 15 |
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| Net cash provided by (used for) business acquisitions | - | 50 | - | - | - | - | 16 | - | 12 | -124 | -39 | 44 |
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| Net cash provided by (used for) investing activities from continuing operations | -386,813,283 | -31,482,246 | 46 | 385 | -242 | - | - | - | - | - | 1,021 | 1,435 |
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| Cash Provided by (Used in) Investing Activities, Discontinued Operations | - | - | - | - | - | - | - | - | - | - | -2 | 100 |
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| Net cash provided by (used for) investing activities | - | - | - | - | - | -581 | -1,213 | -59 | -1,718 | -1,556 | 1,019 | 1,535 |
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| Proceeds from Lines of Credit | - | - | - | 164 | 4,556 | 3,604 | 5,399 | 6,871 | 12,201 | 10,317 | 4,127 | 2,102 |
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| Repayment of secured borrowings | - | - | - | 155 | 4,852 | 3,407 | 5,087 | 6,692 | 12,759 | 10,054 | 4,692 | 2,167 |
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| Repayment of the Paycheck Protection Program Liquidity Facility borrowings | - | - | - | - | - | - | - | - | 1,434 | 740 | 165 | 17 |
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| Proceeds from issuance of securitized debt obligations of consolidated VIEs | - | - | - | - | - | 608 | 1,396 | 495 | 1,993 | 2,387 | 1,121 | - |
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| Repayment of securitized debt obligations of consolidated VIEs | - | - | - | - | - | 298 | 477 | 441 | 673 | 676 | 977 | 1,521 |
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| Proceeds from corporate debt | - | - | - | - | - | 50 | - | - | 304 | 220 | - | 126 |
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| Proceeds from senior secured note | - | - | - | - | - | - | - | - | 350 | - | - | 92 |
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| Repayment of convertible note | - | - | - | - | - | - | - | - | - | - | 115 | - |
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| Repayment of guaranteed loan financing | - | - | - | - | - | 75 | 35 | 102 | 70 | 109 | 154 | 153 |
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| Payment of deferred financing costs | - | - | - | 1 | 17 | 19 | 28 | 13 | 47 | 44 | 32 | 12 |
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| Payment of contingent consideration | - | - | - | - | - | 9 | 1 | - | - | 9 | 9 | - |
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| Proceeds from Issuance of Common Stock | 119 | - | - | - | - | 0 | 91 | 13 | 165 | 123 | 0 | - |
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| Common stock repurchased | - | - | - | 0 | - | - | - | 11 | - | 37 | 18 | 82 |
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| Settlement of share-based awards in satisfaction of withholding tax requirements | - | - | - | - | - | - | - | - | 1 | 6 | 4 | 1 |
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| Dividend payments | - | - | - | 47 | 48 | 51 | 63 | 57 | 112 | 188 | 215 | 206 |
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| Distributions, net | - | - | - | - | - | - | 0 | -0 | -0 | -14 | -0 | -0 |
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| Net cash provided by (used for) financing activities from continuing operations | 417 | 13 | -35,852,525 | -381 | - | - | - | - | - | - | -1,133 | -1,839 |
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| Cash Provided by (Used in) Financing Activities, Discontinued Operations | - | - | - | - | - | - | - | - | - | - | 48 | -41 |
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| Net cash provided by (used for) financing activities | - | - | - | - | -106 | 444 | 1,298 | 63 | 1,876 | 1,171 | -1,085 | -1,880 |
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| Net decrease in cash, cash equivalents, and restricted cash including cash classified within assets held for sale | - | - | - | - | - | - | - | - | - | - | - | -70 |
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| Less: Net increase (decrease) in cash and cash equivalents within assets held for sale | - | - | - | - | - | - | - | - | - | - | - | 10 |
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| Net decrease in cash, cash equivalents, and restricted cash | - | - | - | - | - | - | - | - | - | - | - | -80 |
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| Cash paid for interest | - | - | - | - | 62 | 96 | 126 | 156 | 186 | 355 | 661 | 659 |
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| Income Taxes Paid, Net | - | - | - | - | - | - | -3 | -8 | 13 | 29 | 2 | -12 |
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| Loans transferred from loans, held for sale to loans, net | - | - | - | - | 0 | 1 | 1 | 1 | - | 4 | 69 | 13 |
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| Loans transferred from loans, net to loans, held for sale | - | - | - | - | - | 1 | - | - | 1 | 3 | 4 | 729 |
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| Consolidation of assets in securitization trusts | - | - | - | - | - | - | 463 | - | - | - | 689 | - |
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| Real Estate Owned, Transfer to Real Estate Owned | - | - | - | - | - | - | - | 11 | 9 | 2 | 57 | 87 |
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| Investments held to maturity transferred to real estate owned | - | - | - | - | - | - | - | - | - | 30 | - | - |
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| Common Stock Issued During Period, Acquisitions, Value | - | - | - | - | - | - | - | - | 240 | 458 | 637 | - |
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| Retirement of OP units | - | - | - | - | - | - | - | - | - | 2 | - | - |
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| Consolidation of borrowings in securitization trusts | - | - | - | - | - | - | 463 | - | - | - | 689 | - |
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| Stock Issued, Conversion of OP units | - | - | - | - | - | - | - | - | - | - | 3 | 4 |
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