Mortgage Loans (Details 1) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
Loss reserves related to:
Loss reserves related to mortgage operations	$ 31.6	$ 33.0
Other Mortgage Loans [Member]
Loss reserves related to:
Loss reserves related to mortgage operations	6.9	6.2
Real Estate Owned [Member]
Loss reserves related to:
Loss reserves related to mortgage operations	0.3	0.4
Loan repurchase and settlement obligations - known and expected [Member]
Loss reserves related to:
Loss reserves related to mortgage operations	$ 24.4	$ 26.4