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Deposits (Additional Information About Corporation's Deposits) (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deposit Liability [Line Items] |  |
Deposits from foreign sources (primarily Mexico) | $ 1,048,943 | $ 993,479
Non-interest-bearing public funds deposits | 17,598,234 | 18,423,018
Interest-bearing public funds deposits | 26,355,962 | 24,272,678
Total deposits not covered by deposit insurance | 23,839,797 | 24,125,359
Time deposits not covered by deposit insurance | 430,128 | 238,608
Deposits from certain directors, executive officers and their affiliates | 153,083 | 276,556
Public Funds [Member] |  |
Deposit Liability [Line Items] |  |
Non-interest-bearing public funds deposits | 788,040 | 1,235,026
Interest-bearing public funds deposits | $ 758,761 | $ 810,863

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- Definition Amount of uninsured deposit liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (e) + Details
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- Definition The aggregate of all domestic and foreign interest-bearing deposit liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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- Definition Amount of uninsured time deposit liability in excess of Federal Deposit Insurance Corporation (FDIC) insurance limit or similar state deposit insurance regime in United States of America (US). Excludes time deposit that is otherwise uninsured. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (1) + Details
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