Derivatives (Derivatives Associated With Capital Markets Trading Activities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Customer Interest Rate Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional	$ 1,502,164	$ 1,458,306
Assets	130,705	72,576
Liabilities	1,498	1,537
Offsetting Upstream Interest Rate Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional	1,502,164	1,458,306
Assets	1,498	1,537
Liabilities	130,705	72,576
Forwards And Futures Purchased [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional, Forwards and Futures	3,085,323	3,397,605
Assets, Forwards and Futures	1,001	5,318
Liabilities, Forwards and Futures	2,553	1,785
Forwards And Futures Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional, Forwards and Futures	3,444,049	3,771,659
Assets, Forwards and Futures	2,810	1,228
Liabilities, Forwards and Futures	$ 3,786	$ 8,413