COMMITMENTS AND CONTINGENCIES (DETAILS) (USD $) In Millions, except Per Share data	Sep. 30, 2011
Dividends Payable [Line Items]
Outstanding reinsurance purchase commitment	$ 74
Common shares (par value)
Dividends Payable [Line Items]
Dividend payable per share	$ 0.23
Series A 7.25% Preferred Shares
Dividends Payable [Line Items]
Dividend payable per share	$ 0.453125
Series B 7.5% Preferred Shares
Dividends Payable [Line Items]
Dividend payable per share	$ 1.875