FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended								3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Annuity account balances	Jun. 30, 2013 Annuity account balances	Jun. 30, 2014 Annuity account balances	Jun. 30, 2013 Annuity account balances	Jun. 30, 2014 Other liabilities	Jun. 30, 2013 Other liabilities	Jun. 30, 2014 Other liabilities	Jun. 30, 2013 Other liabilities	Jun. 30, 2014 Total investments	Jun. 30, 2013 Total investments	Jun. 30, 2014 Total investments	Jun. 30, 2013 Total investments	Jun. 30, 2014 Total fixed maturity securities	Jun. 30, 2013 Total fixed maturity securities	Jun. 30, 2014 Total fixed maturity securities	Jun. 30, 2013 Total fixed maturity securities	Jun. 30, 2014 Total fixed maturity securities Available-for-sale securities	Jun. 30, 2013 Total fixed maturity securities Available-for-sale securities	Jun. 30, 2014 Total fixed maturity securities Available-for-sale securities	Jun. 30, 2013 Total fixed maturity securities Available-for-sale securities	Jun. 30, 2014 Total fixed maturity securities Trading Securities	Jun. 30, 2013 Total fixed maturity securities Trading Securities	Jun. 30, 2014 Total fixed maturity securities Trading Securities	Jun. 30, 2013 Total fixed maturity securities Trading Securities	Jun. 30, 2014 Residential mortgage-backed securities Available-for-sale securities	Jun. 30, 2013 Residential mortgage-backed securities Available-for-sale securities	Jun. 30, 2014 Residential mortgage-backed securities Available-for-sale securities	Jun. 30, 2013 Residential mortgage-backed securities Available-for-sale securities	Jun. 30, 2014 Residential mortgage-backed securities Trading Securities	Jun. 30, 2013 Residential mortgage-backed securities Trading Securities	Jun. 30, 2014 Residential mortgage-backed securities Trading Securities	Jun. 30, 2013 Residential mortgage-backed securities Trading Securities	Jun. 30, 2014 Other asset-backed securities Available-for-sale securities	Jun. 30, 2013 Other asset-backed securities Available-for-sale securities	Jun. 30, 2014 Other asset-backed securities Available-for-sale securities	Jun. 30, 2013 Other asset-backed securities Available-for-sale securities	Jun. 30, 2014 Other asset-backed securities Trading Securities	Jun. 30, 2013 Other asset-backed securities Trading Securities	Jun. 30, 2014 Other asset-backed securities Trading Securities	Jun. 30, 2013 Other asset-backed securities Trading Securities	Jun. 30, 2014 States, municipals, and political subdivisions Available-for-sale securities	Mar. 31, 2014 States, municipals, and political subdivisions Available-for-sale securities	Dec. 31, 2013 States, municipals, and political subdivisions Available-for-sale securities	Jun. 30, 2013 States, municipals, and political subdivisions Available-for-sale securities	Mar. 31, 2013 States, municipals, and political subdivisions Available-for-sale securities	Dec. 31, 2012 States, municipals, and political subdivisions Available-for-sale securities	Jun. 30, 2013 States, municipals, and political subdivisions Trading Securities	Jun. 30, 2013 States, municipals, and political subdivisions Trading Securities	Jun. 30, 2013 Other government-related securities Available-for-sale securities	Jun. 30, 2013 Other government-related securities Available-for-sale securities	Jun. 30, 2014 Corporate bonds Available-for-sale securities	Jun. 30, 2013 Corporate bonds Available-for-sale securities	Jun. 30, 2014 Corporate bonds Available-for-sale securities	Jun. 30, 2013 Corporate bonds Available-for-sale securities	Jun. 30, 2014 Corporate bonds Trading Securities	Jun. 30, 2013 Corporate bonds Trading Securities	Jun. 30, 2014 Corporate bonds Trading Securities	Jun. 30, 2013 Corporate bonds Trading Securities	Jun. 30, 2014 Equity securities	Jun. 30, 2014 Equity securities	Jun. 30, 2013 Equity securities	Mar. 31, 2013 Equity securities	Dec. 31, 2012 Equity securities	Jun. 30, 2014 Other long-term investments	Jun. 30, 2013 Other long-term investments	Jun. 30, 2014 Other long-term investments	Jun. 30, 2013 Other long-term investments
Assets:
Beginning Balance	$ 2,505,121,000	$ 921,931,000	$ 2,490,492,000	$ 973,157,000									$ 2,505,121,000	$ 921,931,000	$ 2,490,492,000	$ 973,157,000	$ 2,351,817,000	$ 786,000,000	$ 2,323,627,000	$ 858,975,000	$ 2,126,207,000	$ 709,505,000	$ 2,099,451,000	$ 788,325,000	$ 225,610,000	$ 76,495,000	$ 224,176,000	$ 70,650,000	$ 17,000	$ 4,000	$ 28,000	$ 4,000					$ 548,805,000	$ 560,668,000	$ 545,808,000	$ 596,143,000	$ 194,664,000	$ 71,383,000	$ 194,977,000	$ 70,535,000	$ 3,675,000	$ 3,675,000	$ 3,675,000	$ 4,275,000	$ 4,275,000	$ 4,275,000			$ 20,003,000	$ 20,011,000	$ 1,573,710,000	$ 124,555,000	$ 1,549,940,000	$ 167,892,000	$ 30,946,000	$ 5,112,000	$ 29,199,000	$ 115,000	$ 77,591,000	$ 67,979,000	$ 65,527,000	$ 65,527,000	$ 65,527,000	$ 75,713,000	$ 70,404,000	$ 98,886,000	$ 48,655,000
Total Realized and Unrealized Gains Included in Earnings	6,852,000	23,146,000	9,123,000	52,173,000									6,852,000	23,146,000	9,123,000	52,173,000	6,538,000	1,505,000	8,698,000	4,914,000	74,000	116,000	969,000	116,000	6,464,000	1,389,000	7,729,000	4,798,000													6,124,000	1,389,000	6,851,000	4,797,000											74,000	116,000	969,000	116,000	340,000		878,000	1,000						314,000	21,641,000	425,000	47,259,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	58,165,000	43,826,000	89,546,000	44,768,000									58,165,000	43,826,000	89,546,000	44,768,000	57,200,000	43,826,000	88,354,000	44,768,000	57,200,000	43,826,000	88,354,000	44,768,000													29,929,000	43,744,000	34,066,000	43,756,000													1,000	1,000	27,271,000	81,000	54,288,000	1,011,000					965,000	1,192,000
Total Realized and Unrealized Losses Included in Earnings	(11,531,000)	(12,747,000)	(35,256,000)	(16,875,000)									(11,531,000)	(12,747,000)	(35,256,000)	(16,875,000)	(2,726,000)	(2,633,000)	(3,167,000)	(2,892,000)					(2,726,000)	(2,633,000)	(3,167,000)	(2,892,000)													(2,686,000)	(2,610,000)	(3,114,000)	(2,869,000)															(40,000)	(23,000)	(53,000)	(23,000)						(8,805,000)	(10,114,000)	(32,089,000)	(13,983,000)
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(2,354,000)	(8,019,000)	(8,664,000)	(37,934,000)									(2,354,000)	(8,019,000)	(8,664,000)	(37,934,000)	(2,354,000)	(8,019,000)	(8,498,000)	(37,934,000)	(2,354,000)	(8,019,000)	(8,498,000)	(37,934,000)						(337,000)		(337,000)					(104,000)		(1,233,000)	(27,548,000)														(3,000)	(2,250,000)	(7,682,000)	(7,265,000)	(10,046,000)						(166,000)
Purchases	65,746,000	156,698,000	104,685,000	156,698,000									65,746,000	156,698,000	104,685,000	156,698,000	65,746,000	156,698,000	95,134,000	156,698,000	60,845,000	45,786,000	90,233,000	45,786,000	4,901,000	110,912,000	4,901,000	110,912,000		14,349,000	1,000	14,349,000	842,000	1,582,000	842,000	1,582,000		13,162,000		13,162,000		105,830,000		105,830,000							3,500,000	3,500,000			60,845,000	18,275,000	90,232,000	18,275,000	4,059,000		4,059,000			9,551,000
Sales	(102,316,000)	(54,443,000)	(141,329,000)	(108,363,000)									(102,316,000)	(54,443,000)	(141,329,000)	(108,363,000)	(101,642,000)	(54,443,000)	(140,655,000)	(108,363,000)	(74,712,000)	(44,490,000)	(112,850,000)	(95,570,000)	(26,930,000)	(9,953,000)	(27,805,000)	(12,793,000)	(6,000)		(17,000)						(9,534,000)	(41,377,000)	(9,794,000)	(50,386,000)	(21,883,000)	(9,953,000)	(22,695,000)	(12,776,000)											(65,172,000)	(3,113,000)	(103,039,000)	(45,184,000)	(5,047,000)		(5,110,000)	(17,000)	(674,000)	(674,000)
Transfers in and/or out of Level 3	(66,228,000)	64,586,000	(52,771,000)	70,826,000									(66,228,000)	64,586,000	(52,771,000)	70,826,000	(66,228,000)	64,586,000	(52,771,000)	70,826,000	(67,478,000)	62,376,000	(55,293,000)	63,603,000	1,250,000	2,210,000	2,522,000	7,223,000		46,000		46,000								1,227,000		2,210,000		2,210,000											(67,478,000)	62,330,000	(55,293,000)	62,330,000	1,250,000		2,522,000	5,013,000
Other	(3,524,000)	(32,960,000)	(5,895,000)	(32,432,000)									(3,524,000)	(32,960,000)	(5,895,000)	(32,432,000)	(3,524,000)	1,133,000	(5,895,000)	1,661,000	(3,703,000)	528,000	(6,287,000)	534,000	179,000	605,000	392,000	1,127,000	(1,000)		(2,000)						(999,000)	199,000	(750,000)	42,000	167,000	602,000	367,000	1,124,000									(4,000)	(9,000)	(2,703,000)	333,000	(5,535,000)	501,000	12,000	3,000	25,000	3,000							(34,093,000)		(34,093,000)
Ending Balance	2,449,931,000	1,102,018,000	2,449,931,000	1,102,018,000									2,449,931,000	1,102,018,000	2,449,931,000	1,102,018,000	2,304,827,000	988,653,000	2,304,827,000	988,653,000	2,096,079,000	809,628,000	2,096,079,000	809,628,000	208,748,000	179,025,000	208,748,000	179,025,000	10,000	14,062,000	10,000	14,062,000	842,000	1,582,000	842,000	1,582,000	568,097,000	576,396,000	568,097,000	576,396,000	176,386,000	168,851,000	176,386,000	168,851,000	3,675,000	3,675,000	3,675,000	4,275,000	4,275,000	4,275,000	3,500,000	3,500,000	20,000,000	20,000,000	1,524,297,000	194,895,000	1,524,297,000	194,895,000	31,520,000	5,092,000	31,520,000	5,092,000	77,882,000	77,882,000	65,527,000	65,527,000	65,527,000	67,222,000	47,838,000	67,222,000	47,838,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(7,689,000)	12,015,000	(31,010,000)	37,061,000									(7,689,000)	12,015,000	(31,010,000)	37,061,000	802,000	488,000	654,000	3,785,000					802,000	488,000	654,000	3,785,000													522,000	511,000	654,000	3,779,000															280,000	(23,000)		6,000						(8,491,000)	11,527,000	(31,664,000)	33,276,000
Liabilities:
Beginning Balance	414,142,000	663,495,000	340,738,000	740,905,000	105,593,000	123,681,000	107,000,000	129,468,000	308,549,000	539,814,000	233,738,000	611,437,000
Total Realized and Unrealized Gains Included in Earnings	13,000	153,664,000	25,000	238,210,000					13,000	153,664,000	25,000	238,210,000
Total Realized and Unrealized Losses Included in Earnings	(92,847,000)	(6,817,000)	(169,079,000)	(21,740,000)	(1,714,000)	(1,686,000)	(3,123,000)	(3,686,000)	(91,133,000)	(5,131,000)	(165,956,000)	(18,054,000)
Issuances	63,000	65,000	175,000	201,000	63,000	65,000	175,000	201,000
Settlements	4,914,000	10,818,000	7,842,000	18,741,000	4,914,000	10,818,000	7,842,000	18,741,000
Other		134,505,000		134,505,000						134,505,000		134,505,000
Ending Balance	502,125,000	371,390,000	502,125,000	371,390,000	102,456,000	114,614,000	102,456,000	114,614,000	399,669,000	256,776,000	399,669,000	256,776,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(91,120,000)	148,533,000	(165,931,000)	220,156,000					(91,120,000)	148,533,000	(165,931,000)	220,156,000
Transfers
Securities transferred into Level 3 from Level 2	1,300,000	64,600,000	31,000,000	70,800,000
Securities transferred into Level 2 from Level 3	67,500,000		83,800,000
Securities transferred out of Level 3		0		0
Securities transferred from Level 2 to Level 1	0	0	0	0
Securities transferred out of Level 1	$ 0	$ 0	$ 0	$ 0