Commitments and Contingent Liabilities (Details)		12 Months Ended
	Apr. 08, 2024	Dec. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($)
Other Commitments [Abstract]
The Net Asset Value of Units in Mutual Funds (per unit)		1.00
Assets Purchased from Mutual Funds Managed | $		$ 0	$ 0
Minimum Average Cash Balance Required to be Maintained at Federal Reserve by Subsidiary Bank | $		631,000,000	$ 717,000,000
Misuse of Revenues Pledged to Municipal Bonds [Member] | Judicial Ruling [Member]
Gain (Loss) from Litigation Settlement [Abstract]
Disgorged fees | $		1,067,721
Litigation Settlement, Expense | $		$ 600,000
Misuse of Revenues Pledged to Municipal Bonds [Member] | Pending Litigation [Member]
Gain (Loss) from Litigation Settlement [Abstract]
Loss Contingency, Number of Plaintiffs		2
Bank Participation in Fraudulent Sale of Securities by Principals [Member] | Pending Litigation [Member]
Gain (Loss) from Litigation Settlement [Abstract]
Principal amount of entered judgment against the principal individual and his wife | $		$ 36,805,051
Pre-judgment interest amount of entered judgment against the principal individual and his wife | $		10,937,831
Outstanding principal accrued interest and other amounts upon sale of facilities securing payment of the bonds | $		$ 31,000,000
Bank Participation in Fraudulent Sale of Securities by Principals [Member] | Settled Litigation
Gain (Loss) from Litigation Settlement [Abstract]
Loss Contingency, Number of Plaintiffs		19
Visa Membership [Member]
Loss Contingencies [Line Items]
Common Stock Class B-2 Shares Owned | shares		126,116
Number of Visa Class A Shares Visa Class B Shares Are Convertible To (in shares) | shares		194,597
Potential Exchange Offer Program Conversion Percentage	50.00%
Common Stock Class B-1 Shares Tendered | shares		252,233
Visa Class C Shares owned | shares		50,053
Visa Class C Stock Sold | shares		41,148
Visa Class C Shares Common Stock Donated | shares		8,905
Visa Class B-2 Conversion Rate | shares		1.543