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	Jun. 30, 2016	Dec. 31, 2015
Fair Value
Fair Value	$ 2,853,788	$ 515,000
Fixed maturities
Amortized Cost
Due in one year or less	750,175
Due after one year through five years	6,892,759
Due after five years through ten years	7,793,745
Due after ten years	21,230,047
Total	36,666,726
Fair Value
Due in one year or less	750,605
Due after one year through five years	6,932,132
Due after five years through ten years	7,908,634
Due after ten years	20,471,063
Total	36,062,434
Amortized Cost
Due after ten years	2,779,280
Amortized Cost	2,779,280	593,314
Fair Value
Due after ten years	2,853,788
Fair Value	$ 2,853,788	$ 515,000