Derivatives and Hedging Activities (Tables)

9 Months Ended

Sep. 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
	September 30, 2012				December 31, 2011				September 30, 2011				September 30, 2012				December 31, 2011				September 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	$	—	$	—	$	—	$	182,950	$	22,071	$	234,330	$	25,889	$	248,447	$	28,278

(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
	September 30, 2012					December 31, 2011					September 30, 2011					September 30, 2012				December 31, 2011				September 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	$	1,166,765	$	62,796		$	976,823	$	58,875		$	934,248	$	61,299		$	1,166,765	$	62,796	$	976,823	$	58,875	$	934,248	$	61,299
Mortgage loan commitments	221,057		7,394			191,514		4,959			227,999		5,525			—		—		—		—		—		—
Forward sales contracts	144,849		(2,223		)	159,377		(1,798		)	182,588		(1,591		)	—		—		—		—		—		—
Credit contracts	—		—			—		—			—		—			20,861		—		17,951		—		24,435		—
Foreign exchange	4,363		80			3,582		65			2,461		85			4,371		71		3,793		62		2,456		80
Other	—		—			—		—			—		—			27,898		—		21,094		1,324		17,809		—
Total	$	1,537,034	$	68,047		$	1,331,296	$	62,101		$	1,347,296	$	65,318		$	1,219,895	$	62,867	$	1,019,661	$	60,261	$	978,948	$	61,379

(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
		Three Months Ended,			Three Months Ended,
		September 30, 2012			September 30, 2011
Mortgage loan commitments	Loan sales and servicing income	$	2,146		$	3,986
Forward sales contracts	Loan sales and servicing income	(1,023		)	(1,596		)
Foreign exchange contracts	Other income	136			6
Total		$	1,259		$	2,396