Guarantees, Commitments And Contingencies (Schedule Of Guarantees Issued) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Guarantor Obligations [Line Items]
Unused Commitments to Extend Credit	$ 16,174,326	$ 14,277,347
Commercial letters of credit	80,218	91,978
Total Unfunded Lending Commitments	17,193,840	15,333,781
Financial Guarantee [Member]
Guarantor Obligations [Line Items]
Letters Of Credit Standby	779,811	774,427
Performance Guarantee [Member]
Guarantor Obligations [Line Items]
Letters Of Credit Standby	$ 159,485	$ 190,029