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Borrowings - Schedule of Borrowings (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Short-term borrowings |  |
Federal funds purchased and repurchase agreements | $ 264 | $ 316
FHLB advances | 4,500 | 5,000
Total short-term borrowings | 4,764 | 5,316
Long-term borrowings |  |
Senior notes | 3,743 | 3,741
FHLB advances | 2,005 | 5
Subordinated notes | 867 | 873
Asset-backed notes | 822 | 474
Other | 10 | 10
Total long-term borrowings | 11,319 | 8,201
M&T |  |
Long-term borrowings |  |
Senior notes | 3,256 | 2,482
Subordinated notes | 75 | 76
Junior subordinated debentures — M&T | $ 541 | $ 540

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