OFFSETTING OF ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	$ 294,769
Net Amounts of Assets Presented in the Statement of Financial Position	294,769
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	24,953
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received	148,469
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	121,347
Total derivatives, not subject to a master netting arrangement or similar arrangement
Total derivatives, not subject to a master netting arrangement or similar arrangement	95,491
Total derivatives
Gross Amounts of Recognized Assets	390,260
Net Amounts of Assets Presented in the Statement of Financial Position	390,260
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	24,953
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received	148,469
Total derivatives, Net Amount	216,838
Free-Standing derivatives
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	294,769
Net Amounts of Assets Presented in the Statement of Financial Position	294,769
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	24,953
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received	148,469
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	121,347
Embedded derivative - Modco reinsurance treaties
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	859
Net Amounts of Assets Presented in the Statement of Financial Position	859
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	859
Embedded derivative - GMWB
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	94,344
Net Amounts of Assets Presented in the Statement of Financial Position	94,344
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	94,344
Other
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	288
Net Amounts of Assets Presented in the Statement of Financial Position	288
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	$ 288
Predecessor
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets		$ 225,716
Net Amounts of Assets Presented in the Statement of Financial Position		225,716
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments		53,612
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received		73,935
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount		98,169
Total derivatives, not subject to a master netting arrangement or similar arrangement
Total derivatives, not subject to a master netting arrangement or similar arrangement		68,254
Total derivatives
Gross Amounts of Recognized Assets		293,970
Net Amounts of Assets Presented in the Statement of Financial Position		293,970
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments		53,612
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received		73,935
Total derivatives, Net Amount		166,423
Predecessor | Free-Standing derivatives
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets		225,716
Net Amounts of Assets Presented in the Statement of Financial Position		225,716
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments		53,612
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received		73,935
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount		98,169
Predecessor | Embedded derivative - Modco reinsurance treaties
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets		1,051
Net Amounts of Assets Presented in the Statement of Financial Position		1,051
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount		1,051
Predecessor | Embedded derivative - GMWB
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets		66,843
Net Amounts of Assets Presented in the Statement of Financial Position		66,843
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount		66,843
Predecessor | Other
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets		360
Net Amounts of Assets Presented in the Statement of Financial Position		360
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount		$ 360