Fair Value Disclosure (Details 3) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets
Loans	$ 12.5	$ 97.3
Carrying Amount [Member]
Assets
Investment Funds	0.8	1.5
Loans	12.5	97.3
Liabilities
Recourse fixed rate debt	3,990.8	3,639.9
Recourse floating rate debt	217.3	540.0
Nonrecourse debt	11.5	15.9
Fair Value [Member]
Assets
Investment Funds	1.8	2.4
Loans	12.6	97.4
Liabilities
Recourse fixed rate debt	4,022.0	3,775.0
Recourse floating rate debt	216.5	540.0
Nonrecourse debt	$ 11.9	$ 16.6