Mortgage Loans (Details Textuals 1) (Financial Services [Member], USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Loans Receivable [Line Items]
Mortgage loans held for sale	$ 476,900,000	$ 395,100,000
Principal Amount Outstanding on Loans Held-for-sale or Securitization or Asset-backed Financing Arrangement	466,600,000	381,100,000
Payments for Origination of Mortgage Loans Held-for-sale	3,680,600,000	3,424,600,000	2,687,200,000
Proceeds from Sale of Mortgage Loans Held-for-sale	3,580,000,000	3,370,000,000	2,640,000,000
Net gain on sales of loans	101,800,000	112,000,000	69,200,000
Percentage of mortgage loans sold to major purchaser	71.00%
Percentage Of Mortgage Loans Sold To Major Purchasers	28.00%
Uncommitted Loans [Member]
Loans Receivable [Line Items]
Mortgage loans held for sale	$ 348,600,000