INCOME TAXES (DETAILS 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of effective tax rate (% of income before income taxes) [Line Items]
Expected tax rate	0.00%	0.00%	0.00%
Valuation allowance	(0.70%)	0.60%	(15.50%)
Net tax exempt income	(1.30%)	(1.50%)	(11.20%)
Other	(0.40%)	(0.30%)	4.30%
Actual tax rate	1.00%	0.60%	24.80%
Income before income taxes - Bermuda (domestic)	$ 625,490	$ 485,613	$ 10,911
Income before income taxes - foreign	108,977	64,915	50,627
Income before income taxes	$ 734,467	$ 550,528	$ 61,538
United States [Member]
Reconciliation of effective tax rate (% of income before income taxes) [Line Items]
Foreign taxes at local expected rates	2.10%	0.40%	33.20%
Europe [Member]
Reconciliation of effective tax rate (% of income before income taxes) [Line Items]
Foreign taxes at local expected rates	1.00%	1.40%	10.70%
Other [Member]
Reconciliation of effective tax rate (% of income before income taxes) [Line Items]
Foreign taxes at local expected rates	0.30%	0.00%	3.30%