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	$ 302,361	$ 1,106,532	$ 393,029
Adjustments to reconcile net income to net cash provided by operating activities:
Realized investment (gains) losses	192,385	196,142	(32,623)
Amortization of deferred policy acquisition costs and value of business acquired	225,808	78,221	149,064
Capitalization of deferred policy acquisition costs	(446,469)	(333,252)	(327,938)
Depreciation and amortization expense	67,902	62,609	37,504
Deferred income tax	(14,904)	(697,727)	247,687
Accrued income tax	115,090	40,280	(162,619)
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	311,227	248,148	222,302
Change in accrued investment income and other receivables	5,731	(6,643)	(36,360)
Change in policy liabilities and other policyholders’ funds of traditional life and health products	(618,550)	(294,205)	(208,075)
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	307,918	319,582	375,044
Change in other liabilities	33,980	138,304	132,220
Other, net	(48,444)	(101,784)	(81,091)
Net cash (used in) provided by operating activities	(144,129)	195,272	249,638
Cash flows from investing activities
Maturities and principal reductions of investments, available-for-sale	1,868,245	696,574	1,299,753
Sale of investments, available-for-sale	2,576,119	1,802,215	1,956,302
Cost of investments acquired, available-for-sale	(5,577,921)	(4,029,233)	(4,982,907)
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	(168,897)	(91,518)	(250,557)
Change in short-term investments, net	(217,300)	(279,191)	(72,810)
Net unsettled security transactions	13,384	(19,023)	28,853
Purchase of property and equipment	(92,269)	(37,533)	(5,295)
Cash received from or paid for acquisitions, net of cash acquired	38,456	0	320,967
Net cash used in investing activities	(1,947,894)	(2,624,770)	(4,366,985)
Cash flows from financing activities
Borrowings under line of credit arrangements and debt	1,075,000	1,035,000	265,000
Principal payments on line of credit arrangement and debt	(757,884)	(1,156,498)	(633,074)
Issuance (repayment) of non-recourse funding obligations	(119,000)	(47,000)	2,094,700
Secured financing liabilities	(522,442)
Secured financing liabilities		220,028	359,536
Dividends to shareowner	(140,000)	(143,848)	(89,343)
Investment product and universal life deposits	5,622,414	4,683,121	4,393,596
Investment product and universal life withdrawals	(3,144,273)	(2,256,981)	(2,320,958)
Other financing activities, net	(388)	(196)	0
Net cash provided by financing activities	2,013,427	2,333,626	4,069,457
Change in cash	(78,596)	(95,872)	(47,890)
Cash at beginning of period	252,310	348,182	396,072
Cash at end of period	$ 173,714	$ 252,310	$ 348,182