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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Comprehensive income (loss)
Net income	$ 301,199	$ 227,591	$ 605,803	$ 605,293
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	25,462	46,733	(30,375)	68,085
Net unrealized investment gains (losses)	(215,986)	(93,574)	(1,218,309)	415,870
Defined benefit pension and postretirement plan adjustments	931	700	431	2,473
Total other comprehensive income (loss), net of tax	(189,593)	(46,141)	(1,248,253)	486,428
Total comprehensive income (loss)	$ 111,606	$ 181,450	$ (642,450)	$ 1,091,721

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