Fair Value Disclosure (Details 3) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets
Loans	$ 121.4	$ 122.7
Carrying Amount [Member]
Assets
Investment Funds	1.7	1.7
Loans	121.4	122.7
Liabilities
Recourse fixed rate debt	3,718.8	2,871.2
Recourse floating rate debt	591.2	894.7
Nonrecourse debt	70.1	72.6
Fair Value [Member]
Assets
Investment Funds	3.8	4.0
Loans	120.2	121.5
Liabilities
Recourse fixed rate debt	3,851.6	2,994.0
Recourse floating rate debt	595.4	906.2
Nonrecourse debt	$ 71.6	$ 74.7