INVESTMENT OPERATIONS (Details 4) (USD $)				3 Months Ended		6 Months Ended							6 Months Ended	12 Months Ended									3 Months Ended		6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Below investment grade	Jun. 30, 2014 Fixed maturities	Jun. 30, 2013 Fixed maturities	Jun. 30, 2014 Fixed maturities	Jun. 30, 2013 Fixed maturities	Dec. 31, 2013 Fixed maturities	Jun. 30, 2014 Residential mortgage-backed securities	Dec. 31, 2013 Residential mortgage-backed securities	Jun. 30, 2014 Commercial mortgage-backed securities	Dec. 31, 2013 Commercial mortgage-backed securities	Jun. 30, 2014 Other asset-backed securities	Dec. 31, 2013 Other asset-backed securities	Jun. 30, 2014 U.S. government-related securities	Dec. 31, 2013 U.S. government-related securities	Jun. 30, 2014 Other government-related securities	Dec. 31, 2013 Other government-related securities	Jun. 30, 2014 States, municipalities, and political subdivisions	Dec. 31, 2013 States, municipalities, and political subdivisions	Jun. 30, 2014 Corporate bonds	Dec. 31, 2013 Corporate bonds	Jun. 30, 2014 Equity securities	Jun. 30, 2013 Equity securities	Jun. 30, 2014 Equity securities	Jun. 30, 2013 Equity securities	Dec. 31, 2013 Equity securities
Fair Value
Less Than 12 Months	$ 1,588,455,000	$ 9,868,841,000							$ 144,650,000	$ 332,812,000	$ 37,107,000	$ 429,228,000	$ 121,233,000	$ 175,846,000	$ 344,815,000	$ 891,698,000		$ 10,161,000	$ 20,152,000	$ 172,157,000	$ 815,085,000	$ 7,480,163,000	$ 105,413,000		$ 105,413,000		$ 376,776,000
12 Months or More	2,606,792,000	1,020,842,000							94,687,000	209,818,000	126,051,000	13,840,000	524,614,000	497,512,000	314,356,000	6,038,000			22,254,000	335,000	1,447,963,000	271,535,000	76,867,000		76,867,000		21,764,000
Total	4,195,247,000	10,889,683,000							239,337,000	542,630,000	163,158,000	443,068,000	645,847,000	673,358,000	659,171,000	897,736,000		10,161,000	42,406,000	172,492,000	2,263,048,000	7,751,698,000	182,280,000		182,280,000		398,540,000
Unrealized Loss
Less Than 12 Months	(54,200,000)	(489,624,000)							(10,084,000)	(14,050,000)	(353,000)	(18,467,000)	(6,982,000)	(14,555,000)	(7,321,000)	(53,508,000)		(1,000)	(1,641,000)	(8,113,000)	(24,078,000)	(353,069,000)	(3,741,000)		(3,741,000)		(27,861,000)
12 Months or More	(115,302,000)	(114,680,000)							(3,868,000)	(10,486,000)	(3,670,000)	(1,238,000)	(25,865,000)	(54,993,000)	(14,464,000)	(570,000)			(2,032,000)	(178,000)	(55,099,000)	(38,744,000)	(10,304,000)		(10,304,000)		(8,471,000)
Total	(169,502,000)	(604,304,000)							(13,952,000)	(24,536,000)	(4,023,000)	(19,705,000)	(32,847,000)	(69,548,000)	(21,785,000)	(54,078,000)		(1,000)	(3,673,000)	(8,291,000)	(79,177,000)	(391,813,000)	(14,045,000)		(14,045,000)		(36,332,000)
Percentage of underlying collateral including student-loan backed auction rate securities guaranteed by the Federal Family Education Loan Program ("FFELP"), minimum													97.00%	97.00%
Available-for-sale securities, fair value	35,130,441,000	32,661,058,000	1,700,000,000	34,290,333,000		34,290,333,000		31,999,267,000	1,434,738,000	1,445,068,000	1,087,615,000	970,656,000	865,685,000	871,983,000	1,568,731,000	1,507,890,000	22,214,000	51,427,000	1,602,849,000	1,410,829,000	27,708,501,000	25,741,414,000	723,676,000		723,676,000		581,209,000
Available-for-sale securities, amortized cost	32,188,210,000	31,535,388,000	1,600,000,000	31,368,613,000		31,368,613,000		30,843,333,000	1,397,893,000	1,435,349,000	1,039,299,000	963,461,000	878,416,000	926,396,000	1,544,310,000	1,529,818,000	19,179,000	49,171,000	1,372,418,000	1,315,457,000	25,117,098,000	24,623,681,000	703,165,000		703,165,000		611,473,000
Securities in trading portfolio	2,900,000,000		334,500,000	2,900,000,000		2,900,000,000		2,800,000,000															23,700,000		23,700,000		21,200,000
Securities not publicly traded			816,800,000
Change in unrealized gains (losses), net of income tax				$ 519,488,000	$ (852,157,000)	$ 1,147,761,000	$ (1,019,682,000)																$ 14,591,000	$ (8,391,000)	$ 33,004,000	$ (4,602,000)