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Borrowed Funds - Breakdown of Borrowed Funds (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Instrument |  |
Federal Home Loan Bank and Federal Reserve Bank advances | $ 27,750 | $ 20,250
Total wholesale borrowings | 27,871 | 20,250
Junior subordinated debentures | 580 | 579
Subordinated notes | 441 | 438
Total borrowed funds | 28,892 | 21,267
Total wholesale borrowings |  |
Debt Instrument |  |
Total wholesale borrowings | 27,871 | 20,250
FHLB advances |  |
Debt Instrument |  |
Federal Home Loan Bank and Federal Reserve Bank advances | 22,750 | 19,250
Federal Reserve Bank term funding |  |
Debt Instrument |  |
Fed funds purchased | 1,000 | 1,000
Federal Reserve Bank Discount Window |  |
Debt Instrument |  |
Fed funds purchased | 4,000 | 0
Repurchase agreements |  |
Debt Instrument |  |
Fed funds purchased | 121 | 0
Junior subordinated debentures |  |
Debt Instrument |  |
Junior subordinated debentures | 580 | 579
Subordinated notes |  |
Debt Instrument |  |
Subordinated notes | $ 441 | $ 438

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