Derivative and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary Of Other Derivative Instruments Not Designated As Hedging Instruments [Table Text Block]

	December 31, 2025								December 31, 2024
	Asset				Liability				Asset				Liability
(in thousands)	Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value		Notional Amount		Fair Value
Designated as hedging instruments:
Interest rate-related instruments(a)	$	2,425,000	$	10,517	$	25,000	$	1	$	1,950,000	$	2,960	$	1,150,000	$	2,976
Foreign currency exchange forwards	280,159		757		38,384		194		127,518		2,457		216,665		563
Total designated as hedging instruments			11,274				195				5,418				3,539
Not designated as hedging instruments:
Interest rate-related and other instruments	4,775,818		66,787		7,072,274		108,631		3,858,867		88,541		6,992,894		170,928
Foreign currency exchange forwards	48,904		1,731		43,787		1,517		68,028		4,315		74,199		4,106
Mortgage banking(b)	39,998		814		107,000		444		28,580		580		85,000		—
Total not designated as hedging instruments			69,332				110,592				93,436				175,034
Gross derivatives before netting			80,606				110,787				98,854				178,573
Less: Legally enforceable master netting agreements			12,839				12,839				12,667				12,667
Less: Cash collateral pledged/received			10,343				8,334				35,190				250
Total derivative instruments, after netting			$	57,424			$	89,614			$	50,997			$	165,656

(a) The notional amounts of the interest rate-related instruments designated as hedging instruments include forward starting interest rate swaps. As of December 31, 2025, the Corporation did not have any forward starting interest rate-related swaps. As of December 31, 2024 such swaps with effective dates ranging from February 1, 2025 to March 1, 2025 had an asset notional amount and fair value of $100.0 million and $0.3 million, respectively, and a liability notional amount and fair value of $300.0 million and $1.4 million, respectively.

(b) The mortgage derivative asset includes interest rate lock commitments, while the mortgage derivative liability includes forward commitments. Given the fair value position as of December 31, 2025, the fair value of the mortgage derivative asset included $0.8 million of interest rate lock commitments and the derivative liability included $0.4 million of forward commitments. As of December 31, 2024, the fair value of the mortgage derivative asset included $0.3 million of interest rate lock commitments and $0.3 million of forward commitments.

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The following table presents amounts that were recorded on the consolidated balance sheets related to cumulative basis adjustments for fair value hedges:

	Line Item in the Consolidated Balance Sheets in Which the Hedged Item is Included
	Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)		Carrying Amount of the Hedged Assets/(Liabilities)(a)		Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets/(Liabilities)
(in thousands)	December 31, 2025				December 31, 2024
Other long-term funding	$	(301,760)	$	(1,760)	$	(296,004)	$	3,996
FHLB Advances	(198,722)		1,278		(592,256)		7,744
Total	$	(500,482)	$	(482)	$	(888,260)	$	11,740

(a) Excludes hedged items where only foreign currency risk is the designated hedged risk. At December 31, 2025 and 2024, the carrying amount excluded for foreign currency denominated loans was $318.5 million and $344.2 million, respectively.

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The tables below identify the effect of fair value and cash flow hedge accounting on the Corporation's consolidated statements of income:

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value and Cash Flow Hedging Relationships
	For the Years Ended December 31,
	2025				2024				2023
(in thousands)	Interest Income		Interest (Expense)		Interest Income		Interest (Expense)		Interest Income		Interest (Expense)		(Loss) on Mortgage Portfolio Sale
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value or cash flow hedges are recorded(a)	$	(4,287)	$	(6,379)	$	(16,695)	$	(19,189)	$	(14,176)	$	(17,536)	$	(125)
The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20
Interest contracts:
Hedged items	(115)		(12,222)		(217)		661		(245)		(5,084)		(125)
Derivatives designated as hedging instruments(a)	(4,172)		5,843		(16,478)		(19,850)		(13,930)		(12,451)		—

(a) Includes net settlements on the derivatives.

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value Hedging Relationships
	For the Years Ended December 31,
	2025		2024		2023
(in thousands)	Capital Markets, Net		Capital Markets, Net		Capital Markets, Net
Total amounts of income/expense presented on the consolidated statements of income in which the effects of the fair value hedges are recorded	$	1	$	(3)	$	—
The effects of fair value hedging: Impact on fair value hedging relationships in Subtopic 815-20
Foreign currency contracts:
Hedged items	9,299		(31,226)		9,322
Derivatives designated as hedging instruments	(9,298)		31,223		(9,322)

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the effect of cash flow hedge accounting on accumulated other comprehensive income (loss):

	For the Years Ended December 31,
(in thousands)	2025		2024		2023
Interest rate-related instruments designated as cash flow hedging instruments
Amount of income (loss) recognized in OCI on cash flow hedge derivative(a)	$	7,243	$	(21,537)	$	(13,254)
Amount of loss reclassified from accumulated other comprehensive income (loss) into interest income(a)	4,172		16,478		13,930

(a) The entirety of gains (losses) recognized in OCI as well as those reclassified from accumulated other comprehensive income (loss) into interest income were included components in the assessment of hedge effectiveness.

Gain (loss) on derivative instruments not designated as hedging instruments

The table below identifies the effect of derivatives not designated as hedging instruments on the Corporation's consolidated statements of income:

	Consolidated Statements of Income Category of Gain / (Loss) Recognized in Income	For the Years Ended December 31,
(in thousands)		2025		2024		2023
Derivative Instruments
Interest rate-related and other instruments — customer and mirror, net	Capital markets, net	$	(92)	$	(133)	$	392
Interest rate-related instruments — MSRs hedge	Mortgage banking, net	(796)		(6,531)		(1,096)
Foreign currency exchange forwards	Capital markets, net	(261)		(371)		1,670
Interest rate lock commitments (mortgage)	Mortgage banking, net	488		(113)		353
Forward commitments (mortgage)	Mortgage banking, net	(698)		927		(627)