INVESTMENT OPERATIONS (Details 2) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Investments classified as available-for-sale
Amortized Cost	$ 36,030,697
Gross Unrealized Gains	61,175
Gross Unrealized Losses	(2,200,988)
Fair Value	33,890,884
Total OTTI Recognized in OCI	(7,024)
Investments classified as held-to-maturity
Fair Value	489,950
Fair Value
Fair Value	489,950
Fixed maturities
Investments classified as available-for-sale
Amortized Cost	35,144,095
Gross Unrealized Gains	60,272
Gross Unrealized Losses	(2,188,490)
Fair Value	33,015,877
Total OTTI Recognized in OCI	(7,024)
Investments classified as held-to-maturity
Amortized Cost	565,334
Gross Unrealized Losses	(75,384)
Fair Value	489,950
Trading securities	2,700,000
Amortized Cost
Due in one year or less	849,305
Due after one year through five years	5,172,275
Due after five years through ten years	8,508,443
Due after ten years	20,614,072
Total	35,144,095
Fair Value
Due in one year or less	849,114
Due after one year through five years	5,141,272
Due after five years through ten years	8,293,471
Due after ten years	18,732,020
Total	33,015,877
Amortized Cost
Due after ten years	565,334
Total	565,334
Fair Value
Due after ten years	489,950
Fair Value	489,950
Residential mortgage-backed securities
Investments classified as available-for-sale
Amortized Cost	1,594,167
Gross Unrealized Gains	6,244
Gross Unrealized Losses	(23,585)
Fair Value	1,576,826
Commercial mortgage-backed securities
Investments classified as available-for-sale
Amortized Cost	1,236,987
Gross Unrealized Gains	271
Gross Unrealized Losses	(34,102)
Fair Value	1,203,156
Other asset-backed securities
Investments classified as available-for-sale
Amortized Cost	820,349
Gross Unrealized Gains	2,062
Gross Unrealized Losses	(22,940)
Fair Value	799,471
U.S. government-related securities.
Investments classified as available-for-sale
Amortized Cost	1,644,086
Gross Unrealized Gains	427
Gross Unrealized Losses	(42,983)
Fair Value	1,601,530
Other government-related securities
Investments classified as available-for-sale
Amortized Cost	19,578
Gross Unrealized Losses	(796)
Fair Value	18,782
States, municipals, and political subdivisions
Investments classified as available-for-sale
Amortized Cost	1,720,059
Gross Unrealized Gains	59
Gross Unrealized Losses	(135,050)
Fair Value	1,585,068
Corporate securities
Investments classified as available-for-sale
Amortized Cost	28,044,507
Gross Unrealized Gains	51,209
Gross Unrealized Losses	(1,926,339)
Fair Value	26,169,377
Total OTTI Recognized in OCI	(7,024)
Preferred stock
Investments classified as available-for-sale
Amortized Cost	64,362
Gross Unrealized Losses	(2,695)
Fair Value	61,667
Other
Investments classified as held-to-maturity
Amortized Cost	565,334
Gross Unrealized Losses	(75,384)
Fair Value	489,950
Amortized Cost
Total	565,334
Fair Value
Fair Value	489,950
Equity securities
Investments classified as available-for-sale
Amortized Cost	725,747
Gross Unrealized Gains	903
Gross Unrealized Losses	(12,498)
Fair Value	714,152
Investments classified as held-to-maturity
Trading securities	8,300
Short-term investments
Investments classified as available-for-sale
Amortized Cost	160,855
Fair Value	160,855
Investments classified as held-to-maturity
Trading securities	$ 43,800
Predecessor
Investments classified as available-for-sale
Amortized Cost		$ 31,832,181
Gross Unrealized Gains		3,275,752
Gross Unrealized Losses		(213,518)
Fair Value		34,894,415
Total OTTI Recognized in OCI		6,309
Investments classified as held-to-maturity
Fair Value		485,422
Fair Value
Fair Value		485,422
Predecessor | Fixed maturities
Investments classified as available-for-sale
Amortized Cost		30,919,422
Gross Unrealized Gains		3,237,083
Gross Unrealized Losses		(199,336)
Fair Value		33,957,169
Total OTTI Recognized in OCI		6,309
Investments classified as held-to-maturity
Amortized Cost		435,000
Gross Unrealized Gains		50,422
Gross Unrealized Losses		0
Fair Value		485,422
Trading securities		2,800,000
Amortized Cost
Total		435,000
Fair Value
Fair Value		485,422
Predecessor | Residential mortgage-backed securities
Investments classified as available-for-sale
Amortized Cost		1,374,206
Gross Unrealized Gains		56,330
Gross Unrealized Losses		(12,278)
Fair Value		1,418,258
Total OTTI Recognized in OCI		6,404
Predecessor | Commercial mortgage-backed securities
Investments classified as available-for-sale
Amortized Cost		1,119,979
Gross Unrealized Gains		59,637
Gross Unrealized Losses		(2,364)
Fair Value		1,177,252
Predecessor | Other asset-backed securities
Investments classified as available-for-sale
Amortized Cost		857,441
Gross Unrealized Gains		17,885
Gross Unrealized Losses		(35,950)
Fair Value		839,376
Total OTTI Recognized in OCI		(95)
Predecessor | U.S. government-related securities.
Investments classified as available-for-sale
Amortized Cost		1,394,028
Gross Unrealized Gains		44,149
Gross Unrealized Losses		(9,282)
Fair Value		1,428,895
Predecessor | Other government-related securities
Investments classified as available-for-sale
Amortized Cost		16,939
Gross Unrealized Gains		3,233
Fair Value		20,172
Predecessor | States, municipals, and political subdivisions
Investments classified as available-for-sale
Amortized Cost		1,391,526
Gross Unrealized Gains		296,594
Gross Unrealized Losses		(431)
Fair Value		1,687,689
Predecessor | Corporate securities
Investments classified as available-for-sale
Amortized Cost		24,765,303
Gross Unrealized Gains		2,759,255
Gross Unrealized Losses		(139,031)
Fair Value		27,385,527
Predecessor | Other
Investments classified as held-to-maturity
Amortized Cost		435,000
Gross Unrealized Gains		50,422
Fair Value		485,422
Amortized Cost
Total		435,000
Fair Value
Fair Value		485,422
Predecessor | Equity securities
Investments classified as available-for-sale
Amortized Cost		757,259
Gross Unrealized Gains		38,669
Gross Unrealized Losses		(14,182)
Fair Value		781,746
Investments classified as held-to-maturity
Trading securities		21,500
Predecessor | Short-term investments
Investments classified as available-for-sale
Amortized Cost		155,500
Fair Value		155,500
Investments classified as held-to-maturity
Trading securities		$ 95,100