Variable Interest Entities (Details 1) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	$ 167.4	$ 161.4
Maximum Exposure to Loss	167.4	161.4
Investments in Affiliates [Member]
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	167.2	161.2
Maximum Exposure to Loss	167.2	161.2
Other investment [Member]
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	0.2	0.2
Maximum Exposure to Loss	$ 0.2	$ 0.2