Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 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
	December 31, 2012				December 31, 2011				December 31, 2012				December 31, 2011
	Notional/ Contract Amount		Fair Value (a)		Notional/ Contract Amount		Fair Value (a)		Notional/ Contract Amount		Fair Value (b)		Notional/ Contract Amount		Fair Value (b)
Interest rate swaps:
Fair value hedges	$	—	$	—	$	819	$	—	$	161,133	$	19,080	$	234,330	$	25,889

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

As of December 31, 2012 and 2011, the notional values or contractual amounts and fair value of the Corporation's derivatives not designated in hedge relationships were as follows:

	Asset Derivatives										Liability Derivatives
	December 31, 2012					December 31, 2011					December 31, 2012				December 31, 2011
	Notional/ Contract Amount		Fair Value(a)			Notional/ Contract Amount		Fair Value(a)			Notional/ Contract Amount		Fair Value(b)		Notional/ Contract Amount		Fair Value(b)
Interest rate swaps	$	1,204,835	$	58,769		$	976,823	$	58,875		$	1,204,835	$	58,769	$	976,823	$	58,875
Mortgage loan commitments	168,271		4,400			191,514		4,959			—		—		—		—
Forward sales contracts	124,017		(62		)	159,377		(1,798		)	—		—		—		—
Credit contracts	—		—			—		—			25,225		—		17,951		—
Foreign exchange	6,662		62			3,582		65			6,026		57		3,793		62
Other	—		—			—		—			31,492		—		21,094		1,324
Total	$	1,503,785	$	63,169		$	1,331,296	$	62,101		$	1,267,578	$	58,826	$	1,019,661	$	60,261

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

Gains and losses recognized in income on non-designated hedging instruments for the years ended December 31, 2012, 2011 and 2010 are as follows:

Derivatives not designated as hedging instruments	Location of Gain/(Loss) Recognized in Income on Derivative	Amount of Gain / (Loss) Recognized Income on Derivative in Income on Derivatives
		Year Ended December 31,
		2012			2011			2010
Mortgage loan commitments	Other operating income	(559		)	3,576			987
Forward sales contracts	Other operating income	1,737			(3,904		)	1,222
Foreign exchange contracts	Other operating income	189			9			—
Other	Other operating expense	—			(1,324		)	(678		)
Total		$	1,367		$	(1,643	)	$	1,531