Variable Interest Entities (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	$ 126.1	$ 111.4
Maximum Exposure to Loss	126.1	111.4
Investments in Affiliates [Member]
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	125.5	110.7
Maximum Exposure to Loss	125.5	110.7
Other investment [Member]
Carrying amounts and maximum exposure to loss with respect to VIEs
Net Carrying Amount	0.6	0.7
Maximum Exposure to Loss	$ 0.6	$ 0.7