Commitments, Guarantees, And Contingent Liabilities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014
Guarantees, Commitments And Contingencies [Abstract]
Letters of credit, accrued liability	$ 11.7
Reserve for unfunded lending commitments	9.2
Deferred commitment fees	2.5
Guarantee of trust preferred securities issued by affiliated trusts	15
Commitments for Private Equity and Other Noninterest-bearing Investments	24.4
Range of possible loss, minimum	0
Range of possible loss, maximum	$ 50