Loans (Period-End Balances And Various Asset Quality Attributes By Origination Vintage For Permanent Mortgage Classes Of Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011	Jun. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 16,185,763	[1],[2]	$ 16,397,127	$ 16,061,646	[1],[2]
Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	755,707	[3]		1,059,975	[3]
Avg orig FICO	733			732
Avg Refreshed FICO	712			691
Loans, net of unearned income	755,707	[4]		1,059,975	[5]
Permanent Mortgage Portfolio Segment [Member] | Pre-2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	140,986			196,488
Avg orig FICO	724			726
Avg Refreshed FICO	731			732
Permanent Mortgage Portfolio Segment [Member] | 2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	10,896			13,822
Avg orig FICO	716			724
Avg Refreshed FICO	692			700
Permanent Mortgage Portfolio Segment [Member] | 2005 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	55,985			70,767
Avg orig FICO	740			740
Avg Refreshed FICO	715			720
Permanent Mortgage Portfolio Segment [Member] | 2006 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	102,491			142,381
Avg orig FICO	735			732
Avg Refreshed FICO	707			686
Permanent Mortgage Portfolio Segment [Member] | 2007 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	308,801			407,145
Avg orig FICO	732			731
Avg Refreshed FICO	703			678
Permanent Mortgage Portfolio Segment [Member] | 2008 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	136,548			229,372
Avg orig FICO	742			736
Avg Refreshed FICO	713			679
Restricted Permanent Mortgage Real Estate Loans And Secured Borrowings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 16,900		$ 40,600	$ 44,900

[1] Balances as of June 30, 2012 and 2011 include $19.0 million and $29.9 million of reserves, respectively, and $447.5 million and $649.2 million of balances in restricted consumer real estate loans and secured borrowings, respectively.

[2] Balances as of June 30, 2012 and 2011 include $1.3 million and $3.1 million of reserves, respectively, and $16.9 million and $44.9 million of balances in restricted permanent mortgage loans and secured borrowings, respectively.

[3] Balances as of June 30, 2012 and 2011 include $16.9 million and $44.9 million of restricted loan and secured borrowing balances.

[4] Includes restricted real estate loans and secured borrowings.

[5] Includes restricted real estate loans and secured borrowings