Derivative and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

	December 31, 2023								December 31, 2022
	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	$	2,300,000	$	8,075	$	550,000	$	930	$	900,000	$	4,349	$	1,150,000	$	1,260
Foreign currency exchange forwards	231,566		632		189,212		2,946		261,595		416		167,088		972
Total designated as hedging instruments			8,707				3,876				4,765				2,233
Not designated as hedging instruments:
Interest rate-related and other instruments	3,603,513		111,623		6,528,471		195,662		4,246,823		62,401		4,599,391		251,398
Foreign currency exchange forwards	87,526		2,954		135,654		2,746		68,570		437		34,240		402
Mortgage banking(a)	29,490		439		51,500		673		21,265		86		33,000		46
Total not designated as hedging instruments			115,016				199,082				62,925				251,847
Gross derivatives before netting			123,723				202,958				67,690				254,079
Less: Legally enforceable master netting agreements			18,234				18,234				2,788				2,788
Less: Cash collateral pledged/received			35,855				—				26,898				217
Total derivative instruments, after netting			$	69,634			$	184,724			$	38,003			$	251,073

(a) The notional amount of the mortgage derivative asset includes interest rate lock commitments, while the notional amount of the mortgage derivative liability includes forward commitments.

Balance Sheet Recording of Fair Value Hedge [Table]

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, 2023				December 31, 2022
Other long-term funding	$	(548,634)	$	1,366	$	(248,145)	$	1,855
FHLB Advances	(590,287)		9,713		(585,692)		14,308
Total	$	(1,138,921)	$	11,079	$	(833,837)	$	16,163

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 during the twelve months ended December 31, 2023, 2022, and 2021:

	Location and Amount Recognized on the Consolidated Statements of Income in Fair Value and Cash Flow Hedging Relationships
	For the Years Ended December 31,
	2023						2022				2021
($ in thousands)	Interest Income		Interest Expense		Loss on Mortgage Portfolio Sale		Interest Income		Interest Expense		Interest Income
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)	$	(14,176)	$	17,536	$	(125)	$	(263)	$	334	$	(1,376)
The effects of fair value and cash flow hedging: Impact on fair value hedging relationships in Subtopic 815-20
Interest contracts:
Hedged items	(245)		5,084		(125)		(529)		(16,163)		(1,376)
Derivatives designated as hedging instruments(a)	(13,930)		12,451		—		266		16,497		—

(a) Includes net settlements on the derivatives.

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 twelve months ended December 31, 2023, 2022, and 2021:

	For the Years Ended December 31,
($ in thousands)	2023		2022		2021
Interest rate-related instruments designated as cash flow hedging instruments
Amount of gain (loss) recognized in OCI on cash flow hedge derivative(a)	$	(13,254)	$	3,626	$	—
Amount of (gain) loss reclassified from accumulated other comprehensive income (loss) into interest income(a)	13,930		(266)		—

(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 during the twelve months ended December 31, 2023, 2022, and 2021:

	Consolidated Statements of Income Category of Gain / (Loss) Recognized in Income	For the Years Ended December 31,
($ in thousands)		2023		2022		2021
Derivative Instruments
Interest rate-related and other instruments — customer and mirror, net	Capital markets, net	$	392	$	515	$	2,432
Interest rate-related instruments — MSRs hedge	Mortgage banking, net	(1,096)		(12,622)		—
Foreign currency exchange forwards	Capital markets, net	1,670		203		730
Commodity contracts	Capital markets, net	—		(16)		(1,316)
Interest rate lock commitments (mortgage)	Mortgage banking, net	353		(2,531)		(7,007)
Forward commitments (mortgage)	Mortgage banking, net	(627)		(123)		2,075