Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Maximum refinement period of fair values after closing date of acquisition	1 year
Loan minimum balance included in specific reserve analysis	$ 1
Tax credit carry back period	1 year
Tax credit carry forward period	20 years
Weighted-average anti-dilutive potential common shares	16,338	100,391	3,116	0
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	Chief Operating Decision Maker [Member]
Segment reporting, CODM, profit (loss) measure, description	The amendments in this update improve reportable segment disclosure requirements primarily through enhanced disclosures about significant segment expenses and other information, including disclosure of the title and position of the chief operating decision maker (CODM) and an explanation of how the CODM uses reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources.
Low Income Housing Credit Investments [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Tax credit earning period	10 years
Buildings [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Estimated useful lives of assets	30 years
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Estimated useful lives of assets	3 years
Furniture, Fixtures and Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Estimated useful lives of assets	10 years
Software [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Amortization Expense Charged Off Period	3 years
Core Systems [Member]
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Line Items]
Amortization Expense Charged Off Period	7 years