Business and Basis of Presentation - (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
Mar. 31, 2016	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Policy charges and fee income		$ (107)	$ 117	$ (245)	$ 907	$ 3,491
Future policy benefits		315,248	530,380	759,604	238,052	324,284
Increase (Decrease) Due from Affiliates			(55,000)	55,984	(61,252)	26,936
Reinsurance recoverables	$ (63,764)	264,403	207,509	199,107	(270,868)	(273,480)
Derivatives, net		9,959,323		2,605,415	21,581	(415)
Increase (Decrease) in Deferred Charges				(305,464)	118,028	0
Other, net		(195,029)	(140,897)	(54,819)	(3,508)	(1,804)
Cash flows from (used in) operating activities	40,988	10,896,111	10,088,843	4,963,727	739,697	529,394
Contributed capital			860,573	860,573	0	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders’ account deposits		1,135,720	1,524,528	2,116,567	1,295,546	1,375,761
Ceded policyholders’ account deposits	(16,249)	(19,498)	(21,033)	(23,890)	(54,027)	0
Policyholders’ account withdrawals		(1,191,679)	(1,691,367)	(2,259,445)	(1,511,470)	(1,875,118)
Ceded policyholders' account withdrawals	10,988	17,188	25,198	28,004	0	0
Cash flows from (used in) financing activities	(11,084)	575,204	568,515	$ (543,632)	$ (769,685)	$ (1,041,025)
As Previously Reported
CASH FLOWS FROM OPERATING ACTIVITIES:
Policy charges and fee income		248	(803)
Future policy benefits		122,101	(5,224)
Increase (Decrease) Due from Affiliates			171,317
Reinsurance recoverables	(69,025)	(15,315)	(213,844)
Derivatives, net		10,192,618
Other, net		84,739	650,903
Cash flows from (used in) operating activities	35,727	10,936,664	10,149,084
Contributed capital			781,125
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders’ account deposits		637,886	2,203,234
Ceded policyholders’ account deposits	0	0	0
Policyholders’ account withdrawals		(736,708)	(2,346,701)
Ceded policyholders' account withdrawals	0	0	0
Cash flows from (used in) financing activities	(5,823)	534,651	508,274
Revision
CASH FLOWS FROM OPERATING ACTIVITIES:
Policy charges and fee income		(355)	920
Future policy benefits		193,147	535,604
Increase (Decrease) Due from Affiliates			(226,317)
Reinsurance recoverables	5,261	279,718	421,353
Derivatives, net		(233,295)
Other, net		(279,768)	(791,800)
Cash flows from (used in) operating activities	5,261	(40,553)	(60,241)
Contributed capital			79,448
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders’ account deposits		497,834	(678,706)
Ceded policyholders’ account deposits	(16,249)	(19,498)	(21,033)
Policyholders’ account withdrawals		(454,971)	655,334
Ceded policyholders' account withdrawals	10,988	17,188	25,198
Cash flows from (used in) financing activities	$ (5,261)	$ 40,553	$ 60,241

The cash inflow from a segregated fund account ceded out during the period.

No definition available.

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An amount that an insurer adds to a policy's premium, or deducts from a policy's cash value or contract holder's account, as compensation for services rendered and fee income that are not received in cash.

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The cash outflow for a segregated fund account ceded out during the period.

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The cash inflow from a segregated fund account during the period.

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The increase (decrease) during the reporting period in receivables to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.

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The increase (decrease) during the reporting period in the value of expenditures made during the current reporting period for benefits that will be received over a period of years. Deferred charges differ from prepaid expenses in that they usually extend over a long period of time and may or may not be regularly recurring costs of operation.

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The increase (decrease) during the period in the net carrying value of derivative instruments reported as assets and liabilities that are due to be disposed of within one year (or the normal operating cycle, if longer).

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The increase (decrease) in insurance liability balances during the period.

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Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.

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The increase (decrease) during the reporting period in the amount of benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date for all guaranteed benefit types.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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The cash inflow associated with the amount received by a corporation from a shareholder during the period.

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