Loans (Period-End Balances And Various Asset Quality Attributes By Origination Vintage For The HELOC) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 15,795,709	$ 15,389,074	$ 16,197,952	[1]
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	2,666,090		3,015,880
Avg orig FICO	741		740
Avg Refreshed FICO	732		730
Loans, net of unearned income	2,666,090		3,015,880
Home Equity [Member] | Origination Vintage Period Pre2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	68,332		98,178
Avg orig FICO	708		712
Avg Refreshed FICO	703		702
Home Equity [Member] | Origination Vintage Period 2003 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	120,962		186,941
Avg orig FICO	723		730
Avg Refreshed FICO	710		719
Home Equity [Member] | Origination Vintage Period 2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	346,431		447,817
Avg orig FICO	725		727
Avg Refreshed FICO	713		718
Home Equity [Member] | Origination Vintage Period 2005 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	500,404		572,954
Avg orig FICO	732		733
Avg Refreshed FICO	722		720
Home Equity [Member] | Origination Vintage Period 2006 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	365,886		421,023
Avg orig FICO	740		740
Avg Refreshed FICO	728		726
Home Equity [Member] | Origination Vintage Period 2007 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	384,391		441,879
Avg orig FICO	743		744
Avg Refreshed FICO	729		728
Home Equity [Member] | Origination Vintage Period 2008 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	208,637		240,776
Avg orig FICO	753		754
Avg Refreshed FICO	748		747
Home Equity [Member] | Origination Vintage Period 2009 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	110,934		126,901
Avg orig FICO	751		751
Avg Refreshed FICO	745		743
Home Equity [Member] | Origination Vintage Period 2010 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	106,954		128,058
Avg orig FICO	753		753
Avg Refreshed FICO	750		750
Home Equity [Member] | Origination Vintage Period 2011 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	105,295		124,889
Avg orig FICO	759		759
Avg Refreshed FICO	755		755
Home Equity [Member] | Origination Vintage Period 2012 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	128,733		153,692
Avg orig FICO	759		759
Avg Refreshed FICO	759		759
Home Equity [Member] | Origination Vintage Period 2013 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	167,149		72,772
Avg orig FICO	760		760
Avg Refreshed FICO	760		759
Home Equity [Member] | Origination Vintage Period 2014 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
HELOC - Period End Balance	$ 51,982		$ 0
Avg orig FICO	760		0
Avg Refreshed FICO	762		0

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