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FAIR VALUE MEASUREMENTS (DETAILS 2) (USD $) In Thousands, unless otherwise specified					9 Months Ended					9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Level 3 [Member] ABS - CLO Debt [Member]	Sep. 30, 2014 Level 3 [Member] Other Investments - CLO-Equities [Member]	Sep. 30, 2014 Discounted cash flow [Member] Level 3 [Member] ABS - CLO Debt [Member]	Sep. 30, 2014 Discounted cash flow [Member] Level 3 [Member] Other Investments - CLO-Equities [Member]	Sep. 30, 2014 Broker-dealer quote [Member] Level 3 [Member] ABS - CLO Debt [Member]	Sep. 30, 2014 Net asset value [Member] Level 3 [Member] Other Investments - CLO-Equities [Member]	Sep. 30, 2014 Simulation model [Member] Level 3 [Member] Weather Related Derivative [Member]	Sep. 30, 2014 Minimum [Member] Discounted cash flow [Member] Level 3 [Member] Other Investments - CLO-Equities [Member]	Sep. 30, 2014 Minimum [Member] Simulation model [Member] Level 3 [Member] Weather Related Derivative [Member]	Sep. 30, 2014 Maximum [Member] Discounted cash flow [Member] Level 3 [Member] Other Investments - CLO-Equities [Member]	Sep. 30, 2014 Maximum [Member] Simulation model [Member] Level 3 [Member] Weather Related Derivative [Member]	Sep. 30, 2014 Weighted Average [Member] Discounted cash flow [Member] Level 3 [Member] ABS - CLO Debt [Member]	Sep. 30, 2014 Weighted Average [Member] Discounted cash flow [Member] Level 3 [Member] Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fixed maturities	$ 12,444,684	$ 11,986,327	$ 60,535		$ 17,810		$ 42,725
Other investments	946,836	1,045,810		97,133		37,420		59,713
Net derivative assets									$ (7,418)
Credit spread					3.40%									3.40%
Illiquidity discount					5.00%									5.00%
Default rates										4.00%		5.00%			4.30%
Loss severity rate						53.50%									53.50%
Collateral spreads										2.60%		3.50%			3.30%
Estimated maturity dates (years)										3 years 2 months 5 days		4 years 4 months 13 days			3 years 10 months 24 days
Weather curve											33		2,930
Weather standard deviation											3		305

X

- Definition

The difference between the interest yield earned on the underlying collateral assets and the interest rates incurred on the debt tranches of the CLO structure.

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The difference between implied yields and risk-free rates for similar securities.

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- Definition

The estimated remaining time to maturity of the CLO structure (expressed as a number of years).

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- Definition

Fair value inputs, heating degree days.

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Fair value inputs, standard deviation of heating degree days.

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Fair value of investments in certain entities that calculate net asset value per share, including, but not limited to, by unit, membership interest, or other ownership interest. Investments include, but are not limited to, investments in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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- Definition

Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly.

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Loss, including interest and principal, incurred on a defaulted security, expressed as a percentage of the original principal balance, used as an input to measure fair value.

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Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value.

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