Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 512,898	$ 785,803	$ 1,538,210
Adjustments to reconcile net income to net cash provided by operating activities:
Policy charges and fee income	(11,811)	(76,188)	(113,831)
Interest credited to policyholders’ account balances	374,211	368,315	45,737
Realized investment (gains) losses, net	208,538	(114,067)	13,450
Amortization and other non-cash items	(68,070)	(62,723)	(43,677)
Change in:
Future policy benefits and other policyholder liabilities	1,503,445	1,402,458	1,185,681
Reinsurance recoverables	(1,536,347)	(1,302,695)	(1,168,256)
Accrued investment income	(9,525)	(2,174)	(4,286)
Net payables to/receivables from parent and affiliates	20,299	18,037	(65,548)
Deferred policy acquisition costs	46,643	(190,550)	(1,346,386)
Income taxes	(34,243)	69,204	341,965
Deferred sales inducements	(6,462)	(9,112)	(20,871)
Derivatives, net	60,517	155,556	(75,843)
Other, net	82,836	35,828	31,261
Cash flows from operating activities	1,142,929	1,077,692	317,606
Proceeds from the sale/maturity/prepayment of:
Fixed maturities, available-for-sale	813,721	907,665	1,570,701
Short-term investments	823,112	409,804	662,351
Policy loans	135,449	121,644	130,655
Ceded policy loans	(9,129)	(9,753)	(9,156)
Commercial mortgage and other loans	219,379	113,073	207,340
Other long-term investments	15,633	5,361	12,933
Equity securities, available-for-sale	5,760	17,854	13,596
Trading account assets	1,500	1,375	7,524
Payments for the purchase/origination of:
Fixed maturities, available-for-sale	(1,719,015)	(1,340,010)	(1,934,430)
Short-term investments	(755,145)	(514,524)	(566,100)
Policy loans	(110,165)	(114,037)	(101,357)
Ceded policy loans	13,850	10,960	9,687
Commercial mortgage and other loans	(196,538)	(320,155)	(367,857)
Other long-term investments	(49,004)	(47,096)	(72,862)
Equity securities, available-for-sale	(31,063)	(45,101)	(10,574)
Trading account assets	(19,001)	(32,060)	(9,478)
Notes receivable from parent and affiliates, net	35,350	(7,831)	4,641
Derivatives, net	(12,164)	(11,329)	(11,997)
Other, net	(584)	616	160
Cash flows used in investing activities	(838,054)	(853,544)	(464,223)
CASH FLOWS FROM FINANCING ACTIVITIES:
Policyholders’ account deposits	3,839,784	2,966,388	3,091,818
Ceded policyholders’ account deposits	(1,109,311)	(672,242)	(413,181)
Policyholders’ account withdrawals	(2,134,373)	(1,730,977)	(2,399,425)
Ceded policyholders’ account withdrawals	50,016	46,690	47,114
Net change in securities sold under agreement to repurchase and cash collateral for loaned securities	(25,002)	(19,449)	36,799
Dividend to parent	(430,000)	(748,000)	(423,000)
Contributed (distributed) capital - parent/child asset transfers	(18,739)	(17,306)	(3,374)
Net change in financing arrangements (maturities 90 days or less)	0	(2,900)	2,900
Proceeds from the issuance of debt (maturities longer than 90 days)	412,000	418,000	532,000
Repayments of debt (maturities longer than 90 days)	(739,000)	(571,000)	(451,000)
Drafts outstanding	5,084	14,357	21,100
Cash flows from (used in) financing activities	(149,541)	(316,439)	41,751
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	155,334	(92,291)	(104,866)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	214,952	307,243	412,109
CASH AND CASH EQUIVALENTS, END OF YEAR	370,286	214,952	307,243
SUPPLEMENTAL CASH FLOW INFORMATION
Income taxes paid, net of refunds	26,237	129,430	250,087
Interest paid	$ 53,122	$ 62,664	$ 40,209