Borrowed Funds - Schedule of Interest Expense (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Debt Disclosure [Abstract] | |||
| Interest expense on short-term borrowings | $ 110 | $ 449 | $ 370 |
| Interest expense on long-term debt | 496 | 768 | 278 |
| Total interest expense | 606 | 1,217 | 648 |
| Amortization expense | $ 7 | $ 8 | $ 8 |
| X | ||||||||||
- Definition Amount of amortization expense attributable to debt issuance costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Aggregate amount of interest expense on all borrowings. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Interest expense incurred during the reporting period on long-term borrowings associated with Federal Home Loan Bank and Federal Reserve Bank advances. No definition available.
|
| X | ||||||||||
- Definition The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|