| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Net interest income | ||||||||||||||||
| Interest income | ||||||||||||||||
| Interest expense | ||||||||||||||||
| Net interest income (expense) | ||||||||||||||||
| Provision for (release of) loan loss reserves, net | ||||||||||||||||
| Net interest income (expense) after provision for (release of) loan loss reserves | ||||||||||||||||
| Other income (loss) | ||||||||||||||||
| Real estate operating income | ||||||||||||||||
| Net result from mortgage loan receivables held for sale | ||||||||||||||||
| Gain (loss) on real estate, net | ||||||||||||||||
| Fee and other income | ||||||||||||||||
| Net result from derivative transactions | ||||||||||||||||
| Earnings (loss) from investment in unconsolidated ventures | ||||||||||||||||
| Gain on extinguishment of debt | ||||||||||||||||
| Total other income (loss) | ||||||||||||||||
| Costs and expenses | ||||||||||||||||
| Compensation and employee benefits | ||||||||||||||||
| Operating expenses | ||||||||||||||||
| Real estate operating expenses | ||||||||||||||||
| Investment related expenses | ||||||||||||||||
| Depreciation and amortization | ||||||||||||||||
| Total costs and expenses | ||||||||||||||||
| Income (loss) before taxes | ||||||||||||||||
| Effective income tax rate | ||||||||||||||||
| Net income (loss) | ||||||||||||||||
| Net (income) loss attributable to noncontrolling interests in consolidated ventures | ||||||||||||||||
| Net income (loss) attributable to Class A common shareholders | ||||||||||||||||
| Basic (in dollars per share) | ||||||||||||||||
| Diluted (in dollars per share) |