Derivatives and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 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
	March 31, 2012				December 31, 2011				March 31, 2011				March 31, 2012				December 31, 2011				March 31, 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	$	—	$	—	$	—	$	220,630	$	23,786	$	234,330	$	25,889	$	283,567	$	24,465

(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
	March 31, 2012				December 31, 2011					March 31, 2011					March 31, 2012				December 31, 2011				March 31, 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	$	1,016,626	$	56,298	$	976,823	$	58,875		$	832,474	$	39,108		$	1,016,626	$	56,298	$	976,823	$	58,875	$	832,474	$	39,108
Mortgage loan commitments	247,453		3,268		191,514		4,959			111,494		1,432			—		—		—		—		—		—
Forward sales contracts	201,637		446		159,377		(1,798		)	60,489		(170		)	—		—		—		—		—		—
Credit contracts	—		—		—		—			—		—			17,805		—		17,951		—		29,601		—
Foreign exchange	7,969		103		3,582		65			4,539		10			8,043		90		3,793		62		4,539		10
Other	—		—		—		—			—		—			24,516		—		21,094		1,324		15,295		340
Total	$	1,473,685	$	60,115	$	1,331,296	$	62,101		$	1,008,996	$	40,380		$	1,066,990	$	56,388	$	1,019,661	$	60,261	$	881,909	$	39,458

(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
		Quarter ended,			Quarter ended,
		March 31, 2012			March 31, 2011
Mortgage loan commitments	Loan sales and servicing income	$	(1,691	)	$	48
Forward sales contracts	Loan sales and servicing income	2,244			(2,275		)
Foreign exchange contracts	Other income	45			—
Other	Other expenses	—			(340		)
Total		$	598		$	(2,567	)