International Activities [Line Items]

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- Definition

Amount of revenues related to international trust related services, including wealth management services, offered internationally.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

The aggregate of all foreign interest-bearing and noninterest-bearing deposit liabilities.

+ References

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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International Activities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
International Activities [Line Items]
Revenues from international trust-related services	$ 38,000,000	$ 36,000,000	$ 32,000,000
Loans to foreign borrowers	91,443,226,000	96,799,480,000
Deposits at foreign office		652,104,000
Cayman Islands [Member]
International Activities [Line Items]
Deposits at foreign office	0	652,000,000
Canada [Member]
International Activities [Line Items]
Deposits at foreign office	32,000,000	32,000,000
Geographic Distribution, Foreign [Member]
International Activities [Line Items]
Loans to foreign borrowers	$ 197,000,000	$ 170,000,000
Geographic Concentration Risk [Member] \| Assets, Total [Member]
International Activities [Line Items]
Concentration risk percentage	1.00%
Geographic Concentration Risk [Member] \| Sales Revenue, Net [Member]
International Activities [Line Items]
Concentration risk percentage	1.00%