Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income	$ 201,818	$ 178,724	$ 573,729	$ 536,749
Unrealized gains (losses) on fixed maturities:
Unrealized gains (losses) on fixed maturities	639,378	(164,122)	2,052,553	(1,205,609)
Less applicable tax (expense) benefit	(134,272)	34,464	(431,037)	253,176
Unrealized gains (losses) on investments, net of tax	505,106	(129,658)	1,621,516	(952,433)
Unrealized gains (losses) attributable to deferred acquisition costs	402	1,178	(2,627)	3,669
Less applicable tax (expense) benefit	(84)	(248)	552	(771)
Unrealized gains (losses) attributable to deferred acquisition costs, net of tax	318	930	(2,075)	2,898
Foreign exchange translation adjustments, other than securities	(4,082)	(168)	(1,031)	(7,684)
Less applicable tax (expense) benefit	858	36	218	1,615
Foreign exchange translation adjustments, other than securities, net of tax	(3,224)	(132)	(813)	(6,069)
Pension:
Amortization of pension costs	2,117	3,778	6,355	11,334
Less applicable tax (expense) benefit	(443)	(793)	(1,334)	(2,380)
Pension adjustments, net of tax	1,674	2,985	5,021	8,954
Other comprehensive income (loss)	503,874	(125,875)	1,623,649	(946,650)
Comprehensive income (loss)	705,692	52,849	2,197,378	(409,901)
Securities
Unrealized gains (losses) on fixed maturities:
Unrealized holding gains (losses) arising during period	649,270	(173,598)	2,057,614	(1,202,762)
Reclassifications adjustments included in net income	(11,020)	(458)	(14,307)	(9,715)
Foreign exchange adjustment on securities recorded at fair value	(301)	8,624	183	7,360
Unrealized gains (losses) on fixed maturities	637,949	(165,432)	2,043,490	(1,205,117)
Other
Unrealized gains (losses) on fixed maturities:
Unrealized holding gains (losses) arising during period	$ 1,429	$ 1,310	$ 9,063	$ (492)