MONY CLOSED BLOCK OF BUSINESS (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		8 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Sep. 30, 2015	Dec. 31, 2014
Closed block liabilities
Minimum amount an existing dividend policyholder obligation can be reduced to							$ 0
Future policy benefits, policyholders' account balances and other							6,036,312
Policyholder dividend obligation	$ 323,432	$ 58,435		$ 323,432			58,435
Other liabilities							33,706
Total closed block liabilities							6,128,453
Closed block assets
Fixed maturities, available-for-sale, at fair value							4,426,194
Mortgage loans on real estate							247,797
Policy loans							749,908
Cash and other invested assets							131,183
Other assets							161,407
Total closed block assets							5,716,489
Excess of reported closed block liabilities over closed block assets							411,964
Portion of above representing accumulated other comprehensive income:
Future earnings to be recognized from closed block assets and closed block liabilities							$ 411,964
Net unrealized investment gains (losses) allocated to policyholder dividend obligation, net of deferred tax benefits				(154,143)
Reconciliation of the policyholder dividend obligation
Policyholder dividend obligation, at acquisition date				323,432
Applicable to net revenue (losses)				(27,854)
Change in net unrealized investment gains (losses) allocated to policyholder dividend obligations				(237,143)
Policyholder dividend obligation, end of period	323,432	58,435		58,435
Deferred tax expense (benefit)				(83,000)
Revenues
Premiums and other income		46,610		128,279
Net investment income (loss)		54,593		142,274
Net investment gains (losses)		167		3,017
Total revenues		101,370		273,570
Benefits and other deductions
Benefits and settlement expenses		90,966		245,711
Other operating expense		258		733
Total benefits and other deductions		91,224		246,444
Net revenues before income taxes		10,146		27,126
Income tax expense		3,551		9,494
Net revenues		$ 6,595		17,632
Predecessor
Closed block liabilities
Future policy benefits, policyholders' account balances and other								$ 6,138,505
Policyholder dividend obligation	366,745		$ 301,215	500,453	$ 190,494	$ 190,494		366,745
Other liabilities								53,838
Total closed block liabilities								6,559,088
Closed block assets
Fixed maturities, available-for-sale, at fair value								4,524,037
Equity securities, available-for-sale, at fair value								5,387
Mortgage loans on real estate								448,855
Policy loans								771,120
Cash and other invested assets								30,984
Other assets								221,270
Total closed block assets								6,001,653
Excess of reported closed block liabilities over closed block assets								557,435
Portion of above representing accumulated other comprehensive income:
Future earnings to be recognized from closed block assets and closed block liabilities								$ 557,435
Net unrealized investment gains (losses) allocated to policyholder dividend obligation, net of deferred tax benefits						106,886
Reconciliation of the policyholder dividend obligation
Policyholder dividend obligation, at acquisition date	366,745			$ 500,453	190,494	190,494
Applicable to net revenue (losses)	(1,369)				(8,781)
Change in net unrealized investment gains (losses) allocated to policyholder dividend obligations	135,077				119,502
Policyholder dividend obligation, end of period	500,453		301,215		301,215	$ 366,745
Deferred tax expense (benefit)	47,277				38,448
Revenues
Premiums and other income	15,065		48,596		151,442
Net investment income (loss)	19,107		63,847		176,470
Net investment gains (losses)	568		223		6,328
Total revenues	34,740		112,666		334,240
Benefits and other deductions
Benefits and settlement expenses	31,152		101,200		300,735
Other operating expense			286		376
Total benefits and other deductions	31,152		101,486		301,111
Net revenues before income taxes	3,588		11,180		33,129
Income tax expense	1,256		3,913		11,595
Net revenues	$ 2,332		$ 7,267		$ 21,534