INVESTMENT OPERATIONS - Schedule of Amortized Cost and Fair Value of Available-for-Sale and Held-to-Maturity Fixed Maturities, by Expected Maturity (Details) - Successor - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value
Fair Value	$ 2,757,674	$ 515,000
Fixed maturities
Amortized Cost
Due in one year or less	885,886
Due after one year through five years	6,375,825
Due after five years through ten years	7,616,323
Due after ten years	21,436,755
Total	36,314,789
Fair Value
Due in one year or less	884,908
Due after one year through five years	6,292,647
Due after five years through ten years	7,541,535
Due after ten years	19,685,261
Total	34,404,351
Amortized Cost
Due after ten years	2,783,302
Amortized Cost	2,783,302	593,314
Fair Value
Due after ten years	2,757,674
Fair Value	$ 2,757,674	$ 515,000