Derivatives and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Notional values or contractual amounts and fair value of the Corporation's derivatives designated in hedge relationships

	Asset Derivatives												Liability Derivatives
	June 30, 2012				December 31, 2011				June 30, 2011				June 30, 2012				December 31, 2011				June 30, 2011
	Notional/ Contract Amount		Fair Value (a)		Notional/ Contract Amount		Fair Value (a)		Notional/ Contract Amount		Fair Value (a)		Notional/ Contract Amount		Fair Value (b)		Notional/ Contract Amount		Fair Value (b)		Notional/ Contract Amount		Fair Value (b)
Interest rate swaps:
Fair value hedges	$	—	$	—	$	819	$	—	$	—	$	—	$	196,798	$	23,229	$	234,330	$	25,889	$	267,792	$	25,772

(a) Included in Other Assets on the Consolidated Balance Sheets

(b) Included in Other Liabilities on the Consolidated Balance Sheets

Notional values or contractual amounts and fair value of the Corporation's derivatives not designated in hedge

	Asset Derivatives														Liability Derivatives
	June 30, 2012					December 31, 2011					June 30, 2011				June 30, 2012				December 31, 2011				June 30, 2011
	Notional/ Contract Amount		Fair Value  (a)			Notional/ Contract Amount		Fair Value  (a)			Notional/ Contract Amount		Fair Value  (a)		Notional/ Contract Amount		Fair Value  (b)		Notional/ Contract Amount		Fair Value  (b)		Notional/ Contract Amount		Fair Value  (b)
Interest rate swaps	$	1,094,355	$	61,319		$	976,823	$	58,875		$	863,344	$	46,246	$	1,094,355	$	61,319	$	976,823	$	58,875	$	863,344	$	46,246
Mortgage loan commitments	239,901		5,248			191,514		4,959			129,909		1,539		—		—		—		—		—		—
Forward sales contracts	151,018		(1,201		)	159,377		(1,798		)	84,517		5		—		—		—		—		—		—
Credit contracts	—		—			—		—			—		—		13,215		—		17,951		—		24,714		—
Foreign exchange	4,492		52			3,582		65			4,076		19		5,533		54		3,793		62		4,076		19
Other	—		—			—		—			—		—		25,685		—		21,094		1,324		17,506		—
Total	$	1,489,766	$	65,418		$	1,331,296	$	62,101		$	1,081,846	$	47,809	$	1,138,788	$	61,373	$	1,019,661	$	60,261	$	909,640	$	46,265

(a) Included in Other Assets on the Consolidated Balance Sheet

(b) Included in Other Liabilities on the Consolidated Balance Sheet

Gains and losses recognized in income on non-designated hedging instruments

		Amount of Gain / (Loss) Recognized in Income on
Derivatives not designated as hedging instruments	Location of Gain / (Loss) Recognized in Income on Derivative	Derivatives
		Three Months Ended,			Three Months Ended,
		June 30, 2012			June 30, 2011
Mortgage loan commitments	Loan sales and servicing income	$	1,980		$	107
Forward sales contracts	Loan sales and servicing income	(1,646		)	175
Foreign exchange contracts	Other income	15			—
Other	Other expenses	—			—
Total		$	349		$	282