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Mortgage Loans (Details 1) (Financial Services [Member], USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Sep. 30, 2013
Mortgage Loans on Real Estate, Write-down or Reserve [Line Items]    
Mortgage Loans on Real Estate $ 36.7 $ 35.9
Real Estate Acquired Through Foreclosure 1.6 1.3
Loss reserves related to:    
Loans and Leases Receivable, Allowance 29.2 29.3
Other Real Estate, Foreclosed Assets, and Repossessed Assets 38.3 37.2
Mortgage Loans on Real Estate [Member]
   
Loss reserves related to:    
Loans and Leases Receivable, Allowance 3.1 3.2
Real Estate [Member]
   
Loss reserves related to:    
Loans and Leases Receivable, Allowance 0.3 0.2
Obligation to Repurchase Receivables Sold [Member]
   
Loss reserves related to:    
Loans and Leases Receivable, Allowance $ 25.8 $ 25.9