CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS
Fixed maturity investments, amortized cost (in dollars)	$ 2,464.6	$ 2,421.9
Equity securities, cost (in dollars)	148.0	106.6
Other investments, cost (in dollars)	$ 152.9	$ 77.7
Non-cumulative Preferred Shares Series A, shares issued	6,000,000	6,000,000
Common Shares, shares issued	48,109,054	50,462,839
Treasury shares, shares	1,091,196	1,188,674