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Mortgage Loans (Details 1) (Financial Services [Member], USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Mortgage Loans on Real Estate [Line Items]    
Mortgage Loans on Real Estate $ 41.0 $ 35.9
Real Estate Acquired Through Foreclosure 0.7 1.3
Other Real Estate, Foreclosed Assets, and Repossessed Assets 41.7 37.2
Schedule of mortgage loss reserves    
Loans and Leases Receivable, Allowance 26.2 29.3
Mortgage Loans on Real Estate [Member]
   
Schedule of mortgage loss reserves    
Loans and Leases Receivable, Allowance 1.7 3.2
Real Estate [Member]
   
Schedule of mortgage loss reserves    
Loans and Leases Receivable, Allowance 0.1 0.2
Obligation to Repurchase Receivables Sold [Member]
   
Schedule of mortgage loss reserves    
Loans and Leases Receivable, Allowance $ 24.4 $ 25.9