Fair Value Of Assets And Liabilities (Nonrecurring Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	$ 232,487		$ 235,080		$ 232,487		$ 235,080
Loans, net of unearned income	15,795,709		16,197,952	[1]	15,795,709		16,197,952	[1]	15,389,074
Real estate acquired by foreclosure	57,552		69,901	[1]	57,552		69,901	[1]	71,562
Other assets	186,927		258,061		186,927		258,061
Net gains/(losses), Loans, net of unearned income	757		(1,771)		1,245		(1,977)
Net gains/(losses), Real estate acquired by foreclosure	(533)		(1,933)		(1,391)		(2,952)
Net gains/(losses), Other assets	(849)		(1,437)		(2,101)		(3,046)
Gain (loss) on financial assets measured on non-recurring basis	(617)		(5,285)		(2,214)		(8,035)
Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans, net of unearned income	53,652	[2]	105,826	[2]	53,652	[2]	105,826	[2]
Real estate acquired by foreclosure	38,781	[3]	51,342	[3],[4]	38,781	[3]	51,342	[3],[4]
Other assets	61,093	[5]	71,483	[5]	61,093	[5]	71,483	[5]
Fair Value Inputs Level2 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0		0		0		0
Other assets	156,948		209,357		156,948		209,357
Fair Value Inputs Level2 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans, net of unearned income	0	[2]	0	[2]	0	[2]	0	[2]
Real estate acquired by foreclosure	0	[3]	0	[3]	0	[3]	0	[3]
Other assets	0	[5]	0	[5]	0	[5]	0	[5]
Fair Value Inputs Level3 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	232,487		235,080		232,487		235,080
Other assets	0		0		0		0
Fair Value Inputs Level3 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans, net of unearned income	53,652	[2]	105,826	[2]	53,652	[2]	105,826	[2]
Real estate acquired by foreclosure	38,781	[3]	51,342	[3],[4]	38,781	[3]	51,342	[3],[4]
Other assets	61,093	[5]	71,483	[5]	61,093	[5]	71,483	[5]
Fair Value Inputs Level1 [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0		0		0		0
Other assets	29,979		48,704		29,979		48,704
Fair Value Inputs Level1 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans, net of unearned income	0	[2]	0	[2]	0	[2]	0	[2]
Real estate acquired by foreclosure	0	[3]	0	[3]	0	[3]	0	[3]
Other assets	0	[5]	0	[5]	0	[5]	0	[5]
First Mortgage [Member]
Fair Value Of Assets And Liabilities [Line Items]
Net gains/(losses), Loans held for sale	7		(144)		(10)		(60)
First Mortgage [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	9,004		10,607		9,004		10,607
First Mortgage [Member] | Fair Value Inputs Level2 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0		0		0		0
First Mortgage [Member] | Fair Value Inputs Level3 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	9,004		10,607		9,004		10,607
First Mortgage [Member] | Fair Value Inputs Level1 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0		0		0		0
Small Business Administrations [Member]
Fair Value Of Assets And Liabilities [Line Items]
Net gains/(losses), Loans held for sale	1				43
Small Business Administrations [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	3,471				3,471
Small Business Administrations [Member] | Fair Value Inputs Level2 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	3,471				3,471
Small Business Administrations [Member] | Fair Value Inputs Level3 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	0				0
Small Business Administrations [Member] | Fair Value Inputs Level1 [Member] | Fair Value Measurements Nonrecurring [Member]
Fair Value Of Assets And Liabilities [Line Items]
Loans held-for-sale	$ 0				$ 0

[1] June 30, 2013 balance has been re-presented due to purchase accounting adjustments made in third quarter 2013.

[2] Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral. Write-downs on these loans are recognized as part of provision.

[3] Represents the fair value and related losses of foreclosed properties that were measured subsequent to their initial classification as foreclosed assets. Balance excludes foreclosed real estate related to government insured mortgages.

[4] Balance has been re-presented due to purchase accounting adjustments made in third quarter 2013

[5] Represents tax credit investments.