CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 167,778	$ 186,814	$ 319,719	$ 330,451
Other comprehensive income (loss), net of tax:
Change in unrealized investment gains and losses	70,754	(9,922)	151,825	(74,375)
Benefit plan adjustments	1,549	388	3,199	882
Other comprehensive income (loss), net of tax	72,303	(9,534)	155,024	(73,493)
Comprehensive income	$ 240,081	$ 177,280	$ 474,743	$ 256,958

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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