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, 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]
Permanent Mortgage Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	594,001			746,154
Avg orig FICO	729			731
Avg Refreshed FICO	713			713
Loans, net of unearned income	594,001	662,242	[2]	746,154	[2]
Permanent Mortgage Portfolio Segment [Member] | Origination Vintage Period Pre2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	169,338			226,048
Avg orig FICO	724			725
Avg Refreshed FICO	720			726
Permanent Mortgage Portfolio Segment [Member] | Origination Vintage Period 2004 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	19,378			26,804
Avg orig FICO	713			714
Avg Refreshed FICO	714			692
Permanent Mortgage Portfolio Segment [Member] | Origination Vintage Period 2005 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	37,572			43,459
Avg orig FICO	737			737
Avg Refreshed FICO	737			713
Permanent Mortgage Portfolio Segment [Member] | Origination Vintage Period 2006 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	68,693			86,655
Avg orig FICO	730			733
Avg Refreshed FICO	721			712
Permanent Mortgage Portfolio Segment [Member] | Origination Vintage Period 2007 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	207,116			248,727
Avg orig FICO	733			733
Avg Refreshed FICO	712			711
Permanent Mortgage Portfolio Segment [Member] | Origination Vintage Period 2008 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Permanent Mortgage - Period End Balance	$ 91,904			$ 114,461
Avg orig FICO	741			742
Avg Refreshed FICO	704			713

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

[2] Balances as of June 30, 2013, and December 31, 2013 include $12.4 million and $11.2 million of restricted and secured real estate loans, respectively. See Note 14 - Variable Interest Entities for additional information.