OFFSETTING OF ASSETS AND LIABILITIES (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	$ 273,814
Net Amounts of Assets Presented in the Statement of Financial Position	273,814
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	41,440
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received	120,634
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	111,740
Total derivatives, not subject to a master netting arrangement or similar arrangement
Total derivatives, not subject to a master netting arrangement or similar arrangement	123,299
Total derivatives
Gross Amounts of Recognized Assets	397,113
Net Amounts of Assets Presented in the Statement of Financial Position	397,113us-gaap_DerivativeAssets
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	41,440
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received	120,634
Total derivatives, Net Amount	235,039
Free-Standing derivatives
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	273,814
Net Amounts of Assets Presented in the Statement of Financial Position	273,814
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments	41,440
Gross Amounts Not Offset in the Statement of Financial Position, Cash Collateral Received	120,634
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	111,740
Embedded derivative - Modco reinsurance treaties
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	1,572
Net Amounts of Assets Presented in the Statement of Financial Position	1,572
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	1,572
Embedded derivative - GMWB
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	121,322
Net Amounts of Assets Presented in the Statement of Financial Position	121,322
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	121,322
Other
Total derivatives, subject to a master netting arrangement or similar arrangement
Gross Amounts of Recognized Assets	405
Net Amounts of Assets Presented in the Statement of Financial Position	405
Total derivatives, subject to a master netting arrangement or similar arrangement, Net Amount	405
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

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