Mortgage Loans (Details 1) (USD $) In Millions	Jun. 30, 2011	Sep. 30, 2010
Loss reserves related to:
Loss reserves related to mortgage operations	$ 30.6	$ 39.0
Other mortgage loans [Member]
Loss reserves related to:
Loss reserves related to mortgage operations	5.8	9.0
Real estate owned [Member]
Loss reserves related to:
Loss reserves related to mortgage operations	0.7	1.8
Loan repurchase obligations-known and expected [Member]
Loss reserves related to:
Loss reserves related to mortgage operations	$ 24.1	$ 28.2