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Adoption Of New Accounting Pronouncements, Percent Phased In During Year

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Period Of Deferment For Adoption Of New Accounting Pronouncements

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Regulatory Capital - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 01, 2020	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest		$ 1,443,715	$ 1,350,058	$ 1,435,920	$ 1,339,772
Off-Balance-Sheet, Credit Loss, Liability		23,890	32,034	84,568	$ 112,962
Retained earnings		4,386,169		4,114,446
Unrealized gain (loss)		(68,000)		(83,000)
Unrealized loss, tax benefit		22,000		$ 27,000
Dividends		$ 100,000	$ 160,000
Adjustments
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Period of deferment	2 years
Percentage amount deferred per year	25.00%
Percentage amount phased in during year	25.00%
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	$ 1,100,000
Off-Balance-Sheet, Credit Loss, Liability	116,000
Deferred Tax Assets, Net	306,000
Retained earnings	$ 953,000