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v3.26.1

Fair value measurements - Carrying Amounts and Estimated Fair Value for Financial Instrument Assets (Liabilities) (Detail) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Cash and due from banks |  |  |
Interest-bearing deposits at banks |  | $ 15,499,000 | $ 17,068,000
Investment securities held to maturity |  | 38,374,000 | 36,649,000
Net loans |  | 141,017,000 | 136,586,000
Financial liabilities: |  |  |
Short-term borrowings |  | 64,000 | 49,000
Loan facility carrying amount | [1] | 13,568,000 | 10,911,000
Time deposits above US insurance limit |  | 2,900,000 | 2,800,000
Level 1 |  |  |
Cash and due from banks |  |  |
Cash and due from banks |  | 1,746,000 | 1,588,000
Interest-bearing deposits at banks |  | 0 | 0
Investment securities held to maturity |  | 0 | 0
Net loans |  | 0 | 0
Financial liabilities: |  |  |
Time deposits |  | 0 | 0
Short-term borrowings |  | 0 | 0
Loan facility carrying amount |  | 0 | 0
Level 2 |  |  |
Cash and due from banks |  |  |
Cash and due from banks |  | 193,000 | 113,000
Interest-bearing deposits at banks |  | 15,499,000 | 17,068,000
Investment securities held to maturity |  | 11,084,000 | 11,671,000
Net loans |  | 4,316,000 | 7,427,000
Financial liabilities: |  |  |
Time deposits |  | 14,946,000 | 13,208,000
Short-term borrowings |  | 4,614,000 | 2,149,000
Loan facility carrying amount |  | 13,785,000 | 11,179,000
Level 3 |  |  |
Cash and due from banks |  |  |
Cash and due from banks |  | 0 | 0
Interest-bearing deposits at banks |  | 0 | 0
Investment securities held to maturity |  | 39,000 | 44,000
Net loans |  | 136,477,000 | 128,842,000
Financial liabilities: |  |  |
Time deposits |  | 0 | 0
Short-term borrowings |  | 0 | 0
Loan facility carrying amount |  | 0 | 0
Carrying Amount |  |  |
Cash and due from banks |  |  |
Cash and due from banks |  | 1,939,000 | 1,701,000
Interest-bearing deposits at banks |  | 15,499,000 | 17,068,000
Investment securities held to maturity |  | 11,908,000 | 12,430,000
Net loans |  | 141,017,000 | 136,586,000
Financial liabilities: |  |  |
Time deposits |  | 14,988,000 | 13,227,000
Short-term borrowings |  | 4,614,000 | 2,149,000
Loan facility carrying amount |  | 13,568,000 | 10,911,000
Estimated Fair Value |  |  |
Cash and due from banks |  |  |
Cash and due from banks |  | 1,939,000 | 1,701,000
Interest-bearing deposits at banks |  | 15,499,000 | 17,068,000
Investment securities held to maturity |  | 11,123,000 | 11,715,000
Net loans |  | 140,793,000 | 136,269,000
Financial liabilities: |  |  |
Time deposits |  | 14,946,000 | 13,208,000
Short-term borrowings |  | 4,614,000 | 2,149,000
Loan facility carrying amount |  | $ 13,785,000 | $ 11,179,000
[1] | Loans of $3.1 billion and $2.1 billion at June 30, 2026 and December 31, 2025, respectively, were held in special purpose trusts to settle the respective obligations of asset-backed notes issued by those trusts. The outstanding balances of those asset-backed notes issued to third party investors were included in Long-term borrowings and were $2.8 billion at June 30, 2026 and $1.7 billion at December 31, 2025.

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