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Mortgage Loans (Details Textuals 1) (Financial Services [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Loans Receivable [Line Items]      
Mortgage loans held for sale $ 395.1 $ 345.3  
Principal Amount Outstanding on Loans Held-for-sale or Securitization or Asset-backed Financing Arrangement 381.1 332.9  
Net gain on sales of loans 112.0 69.2 41.6
Percentage of mortgage loans sold to major purchaser 44.00%    
Uncommitted Loans [Member]
     
Loans Receivable [Line Items]      
Mortgage loans held for sale $ 173.6