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Business Segments (Details) (Textual) (Trust and Investment Services [Member], USD $)
Jun. 30, 2012
Jun. 30, 2011
Trust and Investment Services [Member]
   
Business Segments (Textual) [Abstract]    
Market value of assets held by trust and investment services segment $ 3,100,000,000 $ 3,000,000,000
Total non-fiduciary assets $ 2,900,000 $ 2,600,000