STATUTORY FINANCIAL INFORMATION (DETAILS) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statutory Financial Information [Line Items]
Statutory net income	$ 766,000,000	$ 697,000,000	$ 99,000,000
Bermuda [Member]
Statutory Financial Information [Line Items]
Required statutory capital and surplus	1,996,794,000	2,048,329,000
Actual statutory capital and surplus	3,839,840,000	4,091,437,000
Minimum solvency margin amount	100,000,000
Minimum solvency margin percentage of net written premiums	50.00%
Minimum solvency margin percentage of net reserves	15.00%
Limit - prior year's total statutory capital surplus (Bermuda)	25.00%
Number of directors required to sign affadavit in order to pay dividend/distribution greater than 25% of prior year statutory capital and surplus	2
Maximum dividend/distribution payable without regulatory approval	1,000,000,000
Ireland [Member]
Statutory Financial Information [Line Items]
Required statutory capital and surplus	315,258,000	279,078,000
Actual statutory capital and surplus	906,932,000	904,237,000
Maximum dividend/distribution payable with regulatory approval	141,000,000
United States [Member]
Statutory Financial Information [Line Items]
Required statutory capital and surplus	385,651,000	358,674,000
Actual statutory capital and surplus	1,348,861,000	1,295,679,000
Maximum dividend/distribution payable without regulatory approval	$ 135,000,000
Maximum dividend limit - percentage of total statutory capital and surplus	10.00%