Consolidations and Transfers of Financial Assets - Transfers of Financial Assets (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Transfers of Financial Assets [Line Items] | |||
| Portfolio securitizations: unpaid principal balance | $ 140,600 | $ 139,700 | $ 131,600 |
| Unconsolidated VIEs | |||
| Transfers of Financial Assets [Line Items] | |||
| Retained interests: principal and interest received | 242 | 253 | $ 282 |
| Unconsolidated VIEs | Single Class MBS, REMIC & Megas | |||
| Transfers of Financial Assets [Line Items] | |||
| Retained interests: unpaid principal balance | 1,000 | 661 | |
| Retained interest: fair value | $ 1,300 | $ 1,000 | |