CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net income	$ 193,927	$ 1,182,417	$ 352,608
Adjustments to reconcile net income to net cash provided by operating activities:
Realized investment losses (gains)	173,903	25,066	(122,672)
Amortization of deferred policy acquisition costs and value of business acquired	226,066	79,443	150,298
Capitalization of deferred policy acquisition costs	(446,594)	(335,603)	(330,302)
Depreciation and amortization expense	67,125	61,740	36,942
Deferred income tax	(69,963)	(754,974)	208,736
Accrued income tax	104,175	19,377	(168,786)
Interest credited to universal life and investment products	882,904	692,993	699,227
Policy fees assessed on universal life and investment products	(1,558,868)	(1,354,685)	(1,262,166)
Change in reinsurance receivables	315,134	269,294	246,768
Change in accrued investment income and other receivables	50,112	(19,148)	(58,493)
Change in policy liabilities and other policyholders’ funds of traditional life and health products	(495,846)	(331,880)	(222,438)
Trading securities:
Maturities and principal reductions of investments	155,692	165,575	154,633
Sale of investments	493,141	281,441	459,802
Cost of investments acquired	(589,379)	(355,410)	(532,429)
Other net change in trading securities	38,346	9,151	22,427
Amortization of premiums and accretion of discounts on investments and mortgage loans	308,407	319,264	374,726
Change in other liabilities	103,465	265,595	182,973
Other, net	(15,656)	(45,961)	(18,093)
Net cash (used in) provided by operating activities	(63,909)	173,695	173,761
Cash flows from investing activities
Maturities and principal reductions of investments, available-for-sale	1,189,366	695,349	1,299,324
Sale of investments, available-for-sale	2,573,826	1,801,173	1,952,696
Cost of investments acquired, available-for-sale	(4,865,104)	(4,013,245)	(4,858,159)
Change in investments, held-to-maturity	81,000	47,000	(2,181,000)
Mortgage loans:
New lendings	(1,589,459)	(1,671,929)	(1,396,283)
Repayments	1,068,552	923,347	863,873
Change in investment real estate, net	978	(104)	2,851
Change in policy loans, net	51,218	34,625	49,268
Change in other long-term investments, net	(169,293)	(91,934)	(251,987)
Change in short-term investments, net	(164,384)	(207,722)	(61,094)
Net unsettled security transactions	13,384	(19,023)	28,853
Purchase of property and equipment	(91,972)	(33,718)	(2,863)
Cash received from or paid for acquisitions, net of cash acquired	38,456	0	320,967
Net cash used in investing activities	(1,863,432)	(2,536,181)	(4,233,554)
Cash flows from financing activities
Borrowings under subordinated debt	110,000	0	0
Issuance (repayment) of non-recourse funding obligations	(63,890)	(16,070)	2,169,700
Secured financing liabilities	(522,442)
Secured financing liabilities		220,028	359,536
Dividends/Return of capital to the parent company	0	(303,000)	(540,000)
Investment product and universal life deposits	5,689,944	4,683,121	4,393,596
Investment product and universal life withdrawals	(3,313,338)	(2,256,981)	(2,320,958)
Other financing activities, net	(388)	(196)	0
Net cash provided by financing activities	1,899,886	2,326,902	4,061,874
Change in cash	(27,455)	(35,584)	2,081
Cash at beginning of period	178,855	214,439	212,358
Cash at end of period	$ 151,400	$ 178,855	$ 214,439