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v3.20.4

Commitments and Contingencies (Detail) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) shares | Jan. 01, 2020 USD ($) | Dec. 31, 2019 USD ($)
Loss Contingencies [Line Items] |  |  |
Loan commitments | $ 3,720,000,000 |  | $ 2,779,000,000
Standby letters of credit | 86,900,000 |  | 87,800,000
Fixed rate loan commitment | 3,463,000,000 |  |
Floating rate loan commitment | $ 257,800,000 |  |
Loan commitments floating rate, minimum | 0.00% |  |
Loan commitments floating rate, maximum | 14.00% |  |
Allowance for unfunded loan commitments | $ 11,700,000 |  | 2,700,000
Extended credit | 7,900,000 |  | 8,700,000
Credit extensions with collateral | $ 7,500,000 |  | $ 7,700,000
Class B Restricted Shares | Visa |  |  |
Loss Contingencies [Line Items] |  |  |
Restricted stock conversion ratio | 1.6228 |  |
Investment owned, balance (in shares) | shares | 65,466 |  |
Investment owned, at cost | $ 0 |  |
Adjustment |  |  |
Loss Contingencies [Line Items] |  |  |
Increase in allowance for credit losses on unfunded loan |  | $ 4,549,000 |

X
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- Definition Amount of credit extended with unaffiliated banks related to letter of credit commitments issued on behalf of our clients. + References No definition available. + Details
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- Definition Amount of collateral provided to secure credit extended with unaffiliated banks related to letter of credit commitments issued on behalf of our clients. + References No definition available. + Details
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- Definition Minimum floating rate percentage charged on loan commitments. + References No definition available. + Details
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