| Line Item | Jun 30, 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 investment income | |||||||||||||||
| Contractually specified | |||||||||||||||
| Other | |||||||||||||||
| Net mortgage loan servicing fees | |||||||||||||||
| Change in fair value of mortgage servicing rights | |||||||||||||||
| Mortgage servicing rights hedging results | |||||||||||||||
| From PennyMac Financial Services, Inc. | |||||||||||||||
| Net loan servicing fees | |||||||||||||||
| Net gains on loans held for sale at fair value | |||||||||||||||
| Loan origination fees | |||||||||||||||
| Net gains (losses) on investments and financings | — | — | |||||||||||||
| Interest income | |||||||||||||||
| Interest expense | |||||||||||||||
| Net interest expense | |||||||||||||||
| Results of real estate acquired in settlement of loans | |||||||||||||||
| Net investment income | |||||||||||||||
| YoY growth | +63.6% | -13.3% | +22.7% | ||||||||||||
| Expenses | |||||||||||||||
| Loan servicing fees | |||||||||||||||
| Management fees | |||||||||||||||
| Loan fulfillment fees | |||||||||||||||
| Professional services | |||||||||||||||
| Compensation | |||||||||||||||
| Loan collection and liquidation | |||||||||||||||
| Safekeeping | |||||||||||||||
| Loan origination | |||||||||||||||
| Other | |||||||||||||||
| Total expenses | |||||||||||||||
| % of revenue | 76.9% | 61.4% | 52.6% | ||||||||||||
| Income before (benefit from) provision for income taxes | |||||||||||||||
| (Benefit from) provision for income taxes | |||||||||||||||
| Net income | |||||||||||||||
| % of revenue | 42.5% | 56.0% | 58.7% | ||||||||||||
| Dividends on preferred shares of beneficial interest | |||||||||||||||
| Net income (loss) attributable to common shareholders | |||||||||||||||
| Basic | |||||||||||||||
| Diluted | — |