FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 3) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended							3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended				3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Annuity account balances	Sep. 30, 2013 Annuity account balances	Sep. 30, 2014 Annuity account balances	Sep. 30, 2013 Annuity account balances	Sep. 30, 2014 Other liabilities.	Sep. 30, 2013 Other liabilities.	Sep. 30, 2014 Other liabilities.	Sep. 30, 2013 Other liabilities.	Sep. 30, 2014 Total investments	Sep. 30, 2013 Total investments	Sep. 30, 2014 Total investments	Sep. 30, 2013 Total investments	Sep. 30, 2014 Fixed maturities	Sep. 30, 2013 Fixed maturities	Sep. 30, 2014 Fixed maturities	Sep. 30, 2013 Fixed maturities	Sep. 30, 2014 Fixed maturities Available-for-sale securities	Sep. 30, 2013 Fixed maturities Available-for-sale securities	Sep. 30, 2014 Fixed maturities Available-for-sale securities	Sep. 30, 2013 Fixed maturities Available-for-sale securities	Sep. 30, 2014 Fixed maturities Trading securities	Sep. 30, 2013 Fixed maturities Trading securities	Sep. 30, 2014 Fixed maturities Trading securities	Sep. 30, 2013 Fixed maturities Trading securities	Sep. 30, 2014 Residential mortgage-backed securities Available-for-sale securities	Sep. 30, 2013 Residential mortgage-backed securities Available-for-sale securities	Sep. 30, 2014 Residential mortgage-backed securities Available-for-sale securities	Sep. 30, 2013 Residential mortgage-backed securities Available-for-sale securities	Sep. 30, 2014 Residential mortgage-backed securities Trading securities	Sep. 30, 2013 Residential mortgage-backed securities Trading securities	Sep. 30, 2014 Residential mortgage-backed securities Trading securities	Sep. 30, 2013 Residential mortgage-backed securities Trading securities	Sep. 30, 2014 Other asset-backed securities Available-for-sale securities	Sep. 30, 2013 Other asset-backed securities Available-for-sale securities	Sep. 30, 2014 Other asset-backed securities Available-for-sale securities	Sep. 30, 2013 Other asset-backed securities Available-for-sale securities	Sep. 30, 2014 Other asset-backed securities Trading securities	Sep. 30, 2013 Other asset-backed securities Trading securities	Sep. 30, 2014 Other asset-backed securities Trading securities	Sep. 30, 2013 Other asset-backed securities Trading securities	Sep. 30, 2013 States, municipals, and political subdivisions Available-for-sale securities	Sep. 30, 2014 States, municipals, and political subdivisions Available-for-sale securities	Jun. 30, 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	Sep. 30, 2013 States, municipals, and political subdivisions Trading securities	Sep. 30, 2013 States, municipals, and political subdivisions Trading securities	Sep. 30, 2013 Other government-related securities Available-for-sale securities	Sep. 30, 2013 Other government-related securities Available-for-sale securities	Sep. 30, 2014 Corporate bonds Available-for-sale securities	Sep. 30, 2013 Corporate bonds Available-for-sale securities	Sep. 30, 2014 Corporate bonds Available-for-sale securities	Sep. 30, 2013 Corporate bonds Available-for-sale securities	Sep. 30, 2014 Corporate bonds Trading securities	Sep. 30, 2013 Corporate bonds Trading securities	Sep. 30, 2014 Corporate bonds Trading securities	Sep. 30, 2013 Corporate bonds Trading securities	Sep. 30, 2014 Equity securities	Sep. 30, 2014 Equity securities	Sep. 30, 2013 Equity securities	Jun. 30, 2013 Equity securities	Dec. 31, 2012 Equity securities	Sep. 30, 2014 Other long-term investments	Sep. 30, 2013 Other long-term investments	Sep. 30, 2014 Other long-term investments	Sep. 30, 2013 Other long-term investments
Assets:
Beginning Balance	$ 2,509,912,000	$ 1,158,198,000	$ 2,591,641,000	$ 960,044,000									$ 2,509,912,000	$ 1,158,198,000	$ 2,591,641,000	$ 960,044,000	$ 2,304,827,000	$ 988,708,000	$ 2,323,627,000	$ 859,035,000	$ 2,096,079,000	$ 809,683,000	$ 2,099,451,000	$ 788,385,000	$ 208,748,000	$ 179,025,000	$ 224,176,000	$ 70,650,000	$ 10,000	$ 14,062,000	$ 28,000	$ 4,000	$ 842,000	$ 1,582,000			$ 568,097,000	$ 576,396,000	$ 545,808,000	$ 596,143,000	$ 176,386,000	$ 168,851,000	$ 194,977,000	$ 70,535,000	$ 4,335,000	$ 3,675,000	$ 3,675,000	$ 3,675,000	$ 4,330,000	$ 3,500,000		$ 20,000,000	$ 20,011,000	$ 1,524,297,000	$ 194,895,000	$ 1,549,940,000	$ 167,892,000	$ 31,520,000	$ 5,092,000	$ 29,199,000	$ 115,000	$ 81,784,000	$ 71,881,000	$ 69,418,000	$ 69,418,000	$ 69,418,000	$ 123,301,000	$ 100,072,000	$ 196,133,000	$ 31,591,000
Total Realized and Unrealized Gains Included in Earnings	3,759,000	56,958,000	12,702,000	130,724,000									3,759,000	56,958,000	12,702,000	130,724,000	2,228,000	3,167,000	10,926,000	8,081,000	201,000		1,170,000	116,000	2,027,000	3,167,000	9,756,000	7,965,000					11,000		11,000						1,834,000	3,167,000	8,685,000	7,964,000										201,000		1,170,000	116,000	182,000		1,060,000	1,000	1,298,000	1,298,000				233,000	53,791,000	478,000	122,643,000
Total Realized and Unrealized Gains Included in Other Comprehensive Income	13,057,000	3,025,000	102,603,000	47,793,000									13,057,000	3,025,000	102,603,000	47,793,000	10,596,000	3,025,000	98,950,000	47,793,000	10,596,000	3,025,000	98,950,000	47,793,000						1,310,000		1,310,000					2,161,000	52,000	36,227,000	43,808,000												1,000	2,000	8,435,000	1,662,000	62,723,000	2,673,000					2,461,000	3,653,000
Total Realized and Unrealized Losses Included in Earnings	(19,701,000)	(1,508,000)	(95,945,000)	(4,771,000)									(19,701,000)	(1,508,000)	(95,945,000)	(4,771,000)	(1,584,000)	(1,208,000)	(4,751,000)	(4,100,000)	(71,000)		(71,000)		(1,513,000)	(1,208,000)	(4,680,000)	(4,100,000)						(1,000)		(1,000)	(71,000)		(71,000)		(837,000)	(1,080,000)	(3,951,000)	(3,949,000)						(123,000)	(123,000)							(676,000)	(4,000)	(729,000)	(27,000)						(18,117,000)	(300,000)	(91,194,000)	(671,000)
Total Realized and Unrealized Losses Included in Other Comprehensive Income	(13,843,000)	(30,482,000)	(22,507,000)	(68,416,000)									(13,843,000)	(30,482,000)	(22,507,000)	(68,416,000)	(13,752,000)	(30,482,000)	(22,250,000)	(68,416,000)	(13,752,000)	(30,482,000)	(22,250,000)	(68,416,000)					(1,000)		(1,000)	(337,000)					(4,299,000)	(26,969,000)	(5,532,000)	(54,517,000)													(3,000)	(9,452,000)	(3,513,000)	(16,717,000)	(13,559,000)					(91,000)	(257,000)
Purchases	10,055,000	39,165,000	116,481,000	195,863,000									10,055,000	39,165,000	116,481,000	195,863,000	11,797,000	39,165,000	106,930,000	195,863,000	11,797,000	22,771,000	102,029,000	68,557,000		16,394,000	4,901,000	127,306,000				14,349,000			842,000	1,582,000		11,769,000		24,931,000		16,394,000		122,224,000							3,500,000			11,797,000	11,002,000	102,029,000	29,277,000			4,059,000		(1,742,000)	9,551,000
Sales	(72,217,000)	(62,295,000)	(215,289,000)	(170,663,000)									(72,217,000)	(62,295,000)	(215,289,000)	(170,663,000)	(72,217,000)	(62,295,000)	(212,873,000)	(170,663,000)	(59,497,000)	(45,655,000)	(172,348,000)	(141,230,000)	(12,720,000)	(16,640,000)	(40,525,000)	(29,433,000)	(5,000)	(12,000)	(23,000)	(12,000)		(72,000)		(72,000)	(140,000)	(12,085,000)	(9,934,000)	(62,471,000)	(7,137,000)	(16,568,000)	(29,832,000)	(29,344,000)	(5,000)							(20,000,000)	(20,000,000)	(59,352,000)	(13,558,000)	(162,391,000)	(58,742,000)	(5,583,000)		(10,693,000)	(17,000)		(2,416,000)
Transfers in/or out of Level 3	(110,587,000)	(23,589,000)	(163,358,000)	47,237,000									(110,587,000)	(23,589,000)	(163,358,000)	47,237,000	(99,936,000)	(23,589,000)	(152,707,000)	47,237,000	(96,565,000)	(18,718,000)	(151,858,000)	44,885,000	(3,371,000)	(4,871,000)	(849,000)	2,352,000		(15,333,000)		(15,287,000)	(853,000)	(1,494,000)	(853,000)	(1,494,000)				1,227,000				2,210,000						(3,377,000)	(3,377,000)			(96,565,000)	(3,385,000)	(151,858,000)	58,945,000	(2,518,000)		4,000	5,013,000	(10,651,000)	(10,651,000)
Other	(1,253,000)	195,000	(7,146,000)	1,856,000									(1,253,000)	195,000	(7,146,000)	1,856,000	(1,252,000)	195,000	(7,145,000)	1,856,000	(1,934,000)	3,000	(8,219,000)	537,000	682,000	192,000	1,074,000	1,319,000	1,000	11,000	1,000	11,000		(15,000)		(15,000)	(380,000)	(392,000)	(1,130,000)	(350,000)	430,000	203,000	797,000	1,327,000								(1,000)	(10,000)	(1,555,000)	385,000	(7,090,000)	886,000	252,000	4,000	277,000	7,000	(1,000)	(1,000)
Ending Balance	2,319,182,000	1,139,667,000	2,319,182,000	1,139,667,000									2,319,182,000	1,139,667,000	2,319,182,000	1,139,667,000	2,140,707,000	916,686,000	2,140,707,000	916,686,000	1,946,854,000	740,627,000	1,946,854,000	740,627,000	193,853,000	176,059,000	193,853,000	176,059,000	5,000	38,000	5,000	38,000					565,368,000	548,771,000	565,368,000	548,771,000	170,676,000	170,967,000	170,676,000	170,967,000	4,330,000	3,675,000	3,675,000	3,675,000	4,330,000					1,377,806,000	187,488,000	1,377,806,000	187,488,000	23,177,000	5,092,000	23,177,000	5,092,000	73,058,000	73,058,000	69,418,000	69,418,000	69,418,000	105,417,000	153,563,000	105,417,000	153,563,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(16,363,000)	55,083,000	(88,758,000)	126,782,000									(16,363,000)	55,083,000	(88,758,000)	126,782,000	1,521,000	1,592,000	1,958,000	4,810,000					1,521,000	1,592,000	1,958,000	4,810,000													1,287,000	1,596,000	1,959,000	4,814,000														234,000	(4,000)	(1,000)	(4,000)						(17,884,000)	53,491,000	(90,716,000)	121,972,000
Liabilities:
Beginning Balance	587,203,000	450,195,000	377,630,000	740,905,000	102,456,000	114,614,000	107,000,000	129,468,000	484,747,000	335,581,000	270,630,000	611,437,000
Total Realized and Unrealized Gains Included in Earnings	23,179,000	72,905,000	22,342,000	377,398,000	862,000				22,317,000	72,905,000	22,342,000	377,398,000
Total Realized and Unrealized Losses Included in Earnings	(71,316,000)	(26,326,000)	(287,719,000)	(58,650,000)		(2,472,000)	(2,261,000)	(6,159,000)	(71,316,000)	(23,854,000)	(285,458,000)	(52,491,000)
Issuances	125,000	46,000	300,000	247,000	125,000	46,000	300,000	247,000
Settlements	3,590,000	6,542,000	11,432,000	25,284,000	3,590,000	6,542,000	11,432,000	25,284,000
Ending Balance	631,875,000	397,120,000	631,875,000	397,120,000	98,129,000	110,590,000	98,129,000	110,590,000	533,746,000	286,530,000	533,746,000	286,530,000
Total Gains (losses) included in Earnings related to Instruments still held at the Reporting Date	(48,999,000)	49,051,000	(263,116,000)	(324,907,000)					(48,999,000)	49,051,000	(263,116,000)	(324,907,000)
Transfers
Securities transferred into Level 3 from Level 2		1,300,000	31,000,000	72,100,000
Securities transferred into Level 2 from Level 3	110,600,000	24,900,000	194,400,000	24,900,000
Transfers from Level 2 to Level 1	0	0	0	0
Transfers from Level 1	$ 0	$ 0	$ 0	$ 0