Variable Interest Entities (Details 1) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	$ 176.5	$ 161.4
Maximum Exposure to Loss	176.5	161.4
Investments in Affiliates [Member]
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	176.4	161.2
Maximum Exposure to Loss	176.4	161.2
Other investment [Member]
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	0.1	0.2
Maximum Exposure to Loss	$ 0.1	$ 0.2