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Borrowings - Annual Maturities on Borrowings Outstanding (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
FHLB borrowings |  |
FHLB borrowings, Total | $ 850 | $ 16,700
Other short-term borrowings |  |
Other short-term borrowings, 2025 | 5,541 |
Other short-term borrowings, 2026 | 1,000 |
Net Amounts Presented in the Condensed Consolidated Balance Sheets | 6,541 | $ 5,999
Advance From Federal Home Loan Bank And Other Short-Term Borrowings, Maturity [Abstract] |  |
Total, 2025 | 5,541 |
Total, 2026 | 1,850 |
Total | 7,391 |
Federal Home Loan Bank Advances | Secured Credit Facility |  |
FHLB borrowings |  |
FHLB borrowings, 2025 | 0 |
FHLB borrowings, 2026 | 850 |
FHLB borrowings, Total | $ 850 |

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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 470 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478878/942-470-45-1 + Details
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