CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Comprehensive income (loss)
Net income	$ 198,719	$ 83,534	$ 511,294	$ 339,039
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(28,233)	(105,504)	59,442	(201,340)
Net unrealized investment gains	254,658	(139,066)	1,445,776	(552,783)
Defined benefit pension and postretirement plan adjustments	527	1,685	(1,176)	3,473
Total other comprehensive income (loss), net of tax	226,952	(242,885)	1,504,042	(750,650)
Total comprehensive income (loss)	$ 425,671	$ (159,351)	$ 2,015,336	$ (411,611)