INVESTMENT OPERATIONS (Details 2) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Investments classified as available-for-sale
Amortized Cost	$ 36,039,850
Gross Unrealized Gains	51,423
Gross Unrealized Losses	(2,271,077)
Available-for-sale securities, fair value	33,820,196
Total OTTI Recognized in OCI	(4,792)
Investments classified as held-to-maturity
Fair Value	518,363
Fair Value
Fair Value	518,363
Fixed maturities
Investments classified as available-for-sale
Amortized Cost	35,140,616
Gross Unrealized Gains	48,588
Gross Unrealized Losses	(2,260,316)
Available-for-sale securities, fair value	32,928,888
Total OTTI Recognized in OCI	(4,792)
Investments classified as held-to-maturity
Amortized Cost	579,329
Gross Unrealized Losses	(60,966)
Fair Value	518,363
Trading securities	2,700,000
Amortized Cost
Due in one year or less	830,760
Due after one year through five years	5,914,198
Due after five years through ten years	7,709,254
Due after ten years	20,686,404
Total	35,140,616
Fair Value
Due in one year or less	830,346
Due after one year through five years	5,870,182
Due after five years through ten years	7,521,517
Due after ten years	18,706,843
Total	32,928,888
Amortized Cost
Due after ten years	579,329
Amortized Cost	579,329
Fair Value
Due after ten years	518,363
Fair Value	518,363
Residential mortgage-backed securities
Investments classified as available-for-sale
Amortized Cost	1,617,048
Gross Unrealized Gains	13,339
Gross Unrealized Losses	(14,565)
Available-for-sale securities, fair value	1,615,822
Commercial mortgage-backed securities
Investments classified as available-for-sale
Amortized Cost	1,294,633
Gross Unrealized Gains	2,000
Gross Unrealized Losses	(18,970)
Available-for-sale securities, fair value	1,277,663
Other asset-backed securities
Investments classified as available-for-sale
Amortized Cost	815,437
Gross Unrealized Gains	1,320
Gross Unrealized Losses	(23,743)
Available-for-sale securities, fair value	793,014
U.S. government-related securities.
Investments classified as available-for-sale
Amortized Cost	1,631,826
Gross Unrealized Gains	1,189
Gross Unrealized Losses	(15,543)
Available-for-sale securities, fair value	1,617,472
Other government-related securities
Investments classified as available-for-sale
Amortized Cost	19,360
Gross Unrealized Losses	(476)
Available-for-sale securities, fair value	18,884
States, municipals, and political subdivisions
Investments classified as available-for-sale
Amortized Cost	1,732,549
Gross Unrealized Gains	759
Gross Unrealized Losses	(119,823)
Available-for-sale securities, fair value	1,613,485
Total OTTI Recognized in OCI	50
Corporate securities
Investments classified as available-for-sale
Amortized Cost	27,965,401
Gross Unrealized Gains	29,981
Gross Unrealized Losses	(2,064,946)
Available-for-sale securities, fair value	25,930,436
Total OTTI Recognized in OCI	(4,842)
Preferred stock
Investments classified as available-for-sale
Amortized Cost	64,362
Gross Unrealized Losses	(2,250)
Available-for-sale securities, fair value	62,112
Other
Investments classified as held-to-maturity
Amortized Cost	579,329
Gross Unrealized Losses	(60,966)
Fair Value	518,363
Amortized Cost
Amortized Cost	579,329
Fair Value
Fair Value	518,363
Equity securities
Investments classified as available-for-sale
Amortized Cost	725,750
Gross Unrealized Gains	2,835
Gross Unrealized Losses	(10,761)
Available-for-sale securities, fair value	717,824
Investments classified as held-to-maturity
Trading securities	6,700
Short-term investments
Investments classified as available-for-sale
Amortized Cost	173,484
Available-for-sale securities, fair value	173,484
Investments classified as held-to-maturity
Trading securities	$ 65,200
Predecessor
Investments classified as available-for-sale
Amortized Cost		$ 31,832,181
Gross Unrealized Gains		3,275,752
Gross Unrealized Losses		(213,518)
Available-for-sale securities, 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)
Available-for-sale securities, 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
Amortized Cost		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)
Available-for-sale securities, 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)
Available-for-sale securities, 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)
Available-for-sale securities, 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)
Available-for-sale securities, 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
Available-for-sale securities, 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)
Available-for-sale securities, 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)
Available-for-sale securities, 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
Amortized Cost		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)
Available-for-sale securities, 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
Available-for-sale securities, fair value		155,500
Investments classified as held-to-maturity
Trading securities		$ 95,100