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OTHER COMPREHENSIVE INCOME (DETAILS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Before Tax Amount
Other Comprehensive Income (Loss), before Tax	$ 36,797	$ (41,068)	$ 309,267	$ (76,815)
Tax (Expense) Benefit
Other Comprehensive Income (Loss), Tax	(1,381)	1,541	(22,297)	4,796
Net of Tax Amount
Adjustment for reclassification of net realized investment gains and OTTI losses recognized in net income	(2,642)	74,810	42,620	128,770
Other Comprehensive Income (Loss), Net of Tax	35,416	(39,527)	286,970	(72,019)
Unrealized gains (losses) on available for sale investments, net of tax [Member]
Before Tax Amount
Unrealized investment gains (losses) arising during the period	40,125	(102,810)	263,235	(183,822)
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	(5,050)	76,368	40,338	130,858
Other Comprehensive Income (Loss), before Tax	35,075	(26,442)	303,573	(52,964)
Tax (Expense) Benefit
Unrealized investment gains (losses) arising during the period	(3,789)	3,099	(24,579)	6,884
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	2,408	(1,558)	2,282	(2,088)
Other Comprehensive Income (Loss), Tax	(1,381)	1,541	(22,297)	4,796
Net of Tax Amount
Unrealized investment gains (losses) arising during the period	36,336	(99,711)	238,656	(176,938)
Adjustment for reclassification of net realized investment gains and OTTI losses recognized in net income	(2,642)	74,810	42,620	128,770
Other Comprehensive Income (Loss), Net of Tax	33,694	(24,901)	281,276	(48,168)
Accumulated Other-than-Temporary Impairment, net of tax [Member]
Before Tax Amount
Other Comprehensive Income (Loss), before Tax	0	0	0	0
Tax (Expense) Benefit
Other Comprehensive Income (Loss), Tax	0	0	0	0
Net of Tax Amount
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Cumulative foreign currency translation adjustments, net of tax [Member]
Before Tax Amount
Other Comprehensive Income (Loss), before Tax	1,722	(14,626)	5,694	(23,851)
Tax (Expense) Benefit
Other Comprehensive Income (Loss), Tax	0	0	0	0
Net of Tax Amount
Other Comprehensive Income (Loss), Net of Tax	$ 1,722	$ (14,626)	$ 5,694	$ (23,851)

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities and for unrealized loss realized upon the write-down of available-for-sale securities.

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