MONY CLOSED BLOCK OF BUSINESS - Summary of Financial Information for the Closed Block (Details) - Successor - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Jan. 31, 2015
Closed block liabilities
Future policy benefits, policyholders’ account balances and other policyholder liabilities	$ 5,939,342	$ 6,010,520
Policyholder dividend obligation	232,422	0	$ 52,283	$ 323,432
Other liabilities	13,268	24,539
Total closed block liabilities	6,185,032	6,035,059
Closed block assets
Fixed maturities, available-for-sale, at fair value	4,677,305	4,426,090
Mortgage loans on real estate	245,997	247,162
Policy loans	726,563	746,102
Cash	0	34,420
Other assets	148,763	162,640
Total closed block assets	5,798,628	5,616,414
Excess of reported closed block liabilities over closed block assets	386,404	418,645
Portion of above representing accumulated other comprehensive income:
Net unrealized investment gains (losses) net of policyholder dividend obligation of $(9,488) (Successor) and $(179,360) (Successor)	0	(18,597)
Future earnings to be recognized from closed block assets and closed block liabilities	386,404	400,048
Policyholder dividend obligation	$ (9,488)	$ (179,360)