Borrowings - Schedule of Borrowings (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Short-term borrowings | ||||
| Repurchase agreements | $ 64,000 | $ 49,000 | ||
| Advances from FHLB | 4,550,000 | 2,100,000 | ||
| Total short-term borrowings | 4,614,000 | 2,149,000 | ||
| Long-term borrowings | ||||
| Senior notes | 3,142,000 | 1,946,000 | ||
| Advances from FHLB | 3,000 | 3,000 | ||
| Subordinated notes | 489,000 | 489,000 | ||
| Other | 10,000 | 10,000 | ||
| Total long-term borrowings | [1] | 13,568,000 | 10,911,000 | |
| M&T | ||||
| Long-term borrowings | ||||
| Senior notes | 5,497,000 | 5,583,000 | ||
| Subordinated notes | 1,245,000 | 747,000 | ||
| Junior subordinated debentures — M&T (a) | 403,000 | 403,000 | ||
| Asset-backed notes (a) | $ 2,779,000 | $ 1,730,000 | ||
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- References No definition available.
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- Definition Amount after offset of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of long-term debt classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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