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Fair Value - Level III (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | $ 38,156,506 | $ 42,980,382
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | (6,337,379) | (6,113,566)
Net accretion | $ 4,582 | $ 4,449
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] | Available-for-sale securities | Available-for-sale securities
Included in OCI | $ (2,034) | $ (1,758)
Purchases / Originations | 1,147,227 | 1,736,065
Sales | (1,198,805) | (1,496,638)
Cash repayments / receipts | (324,632) | (235,432)
Transfers into Level III | (109,804) | (2,013,681)
Transfers out of Level III | 1,306,325 | 1,319,562
Consolidation of VIEs | 2,278,350 | 2,808,141
Deconsolidation of VIEs | (62,423) | (818,095)
Balance at the end of the period | 34,857,913 | 38,156,506
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | (6,412,167) | (6,194,298)
Included in OCI | (2,034) | (1,758)
Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | (12,923)
Loans at Fair Value |  |
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | 2,516,008 | 2,645,637
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | 184,440 | 75,880
Net accretion | 0 | 0
Included in OCI | 0 | 0
Purchases / Originations | 1,147,227 | 1,736,065
Sales | (1,198,805) | (1,496,638)
Cash repayments / receipts | (224,490) | (210,884)
Transfers into Level III | 0 | 0
Transfers out of Level III | (100,837) | (234,052)
Consolidation of VIEs | 0 | 0
Deconsolidation of VIEs | 0 | 0
Balance at the end of the period | 2,323,543 | 2,516,008
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | 105,013 | (9,645)
Included in OCI | 0 | 0
Loans at Fair Value | Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | 0
RMBS |  |
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | 93,806 | 102,368
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | 0 | 0
Net accretion | 4,582 | 4,449
Included in OCI | (2,034) | (1,758)
Purchases / Originations | 0 | 0
Sales | 0 | 0
Cash repayments / receipts | (8,071) | (11,253)
Transfers into Level III | 0 | 0
Transfers out of Level III | 0 | 0
Consolidation of VIEs | 0 | 0
Deconsolidation of VIEs | 0 | 0
Balance at the end of the period | 88,283 | 93,806
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | 4,582 | 4,449
Included in OCI | (2,034) | (1,758)
RMBS | Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | 0
CMBS |  |
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | 27,345 | 18,600
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | 1,724 | 439
Net accretion | 0 | 0
Included in OCI | 0 | 0
Purchases / Originations | 0 | 0
Sales | 0 | 0
Cash repayments / receipts | (872) | (186)
Transfers into Level III | 0 | 7,908
Transfers out of Level III | 0 | 0
Consolidation of VIEs | 0 | 0
Deconsolidation of VIEs | 0 | 584
Balance at the end of the period | 28,197 | 27,345
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | 1,781 | 783
Included in OCI | 0 | 0
CMBS | Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | 0
Woodstar Fund investments |  |
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | 2,073,533 | 2,012,833
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | (346,034) | 60,700
Net accretion | 0 | 0
Included in OCI | 0 | 0
Purchases / Originations | 0 | 0
Sales | 0 | 0
Cash repayments / receipts | 0 | 0
Transfers into Level III | 0 | 0
Transfers out of Level III | 0 | 0
Consolidation of VIEs | 0 | 0
Deconsolidation of VIEs | 0 | 0
Balance at the end of the period | 1,727,499 | 2,073,533
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | (346,034) | 60,700
Included in OCI | 0 | 0
Woodstar Fund investments | Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | 0
Domestic servicing rights, at fair value |  |
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | 22,390 | 19,384
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | 5,890 | 3,006
Net accretion | 0 | 0
Included in OCI | 0 | 0
Purchases / Originations | 0 | 0
Sales | 0 | 0
Cash repayments / receipts | 0 | 0
Transfers into Level III | 0 | 0
Transfers out of Level III | 0 | 0
Consolidation of VIEs | 0 | 0
Deconsolidation of VIEs | 0 | 0
Balance at the end of the period | 28,280 | 22,390
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | 5,890 | 3,006
Included in OCI | 0 | 0
Domestic servicing rights, at fair value | Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | 0
VIE assets |  |
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | 38,937,576 | 43,786,356
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | (6,660,301) | (6,765,427)
Net accretion | 0 | 0
Included in OCI | 0 | 0
Purchases / Originations | 0 | 0
Sales | 0 | 0
Cash repayments / receipts | 0 | 0
Transfers into Level III | 0 | 0
Transfers out of Level III | 0 | 0
Consolidation of VIEs | 2,278,350 | 2,808,141
Deconsolidation of VIEs | (62,461) | (891,494)
Balance at the end of the period | 34,493,164 | 38,937,576
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | (6,660,301) | (6,765,427)
Included in OCI | 0 | 0
VIE assets | Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | 0
VIE liabilities |  |
Changes in financial assets classified as Level III |  |
Balance at the beginning of the period | (5,514,152) | (5,604,796)
Total realized and unrealized gains (losses): |  |
Change in fair value / gain on sale | 476,902 | 511,836
Net accretion | 0 | 0
Included in OCI | 0 | 0
Purchases / Originations | 0 | 0
Sales | 0 | 0
Cash repayments / receipts | (91,199) | (13,109)
Transfers into Level III | (109,804) | (2,021,589)
Transfers out of Level III | 1,407,162 | 1,553,614
Consolidation of VIEs | 0 | 0
Deconsolidation of VIEs | 38 | 72,815
Balance at the end of the period | (3,831,053) | (5,514,152)
Amount of Unrealized Gains (Losses) Attributable to Assets Still Held [Abstract] |  |
Included in earnings | 476,902 | 511,836
Included in OCI | $ 0 | 0
VIE liabilities | Level III |  |
Total realized and unrealized gains (losses): |  |
Issuances |  | $ (12,923)

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