Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash provided from (used for) operating activities:
Cash provided from (used for) operating activities	$ 1,030,175	$ 937,289
Cash provided from (used for) investing activities:
Fixed maturities available for sale—sold	62,151	12,162
Fixed maturities available for sale—matured or other redemptions	604,701	266,736
Other long-term investments	0	47
Total investments sold or matured	666,852	278,945
Acquisition of investments:
Fixed maturities—available for sale	(1,056,822)	(727,296)
Other long-term investments	(107,660)	(74,396)
Total investments acquired	(1,164,482)	(801,692)
Net increase (decrease) in policy loans	(18,826)	(14,307)
Net increase (decrease) in short-term investments	(5,270)	(506,419)
Additions to properties	(30,049)	(27,316)
Dispositions of properties	32	17
Investment in low-income housing interests	(16,824)	(19,075)
Cash provided from (used for) investing activities	(568,567)	(1,089,847)
Cash provided from (used for) financing activities:
Issuance of common stock	57,573	35,065
Cash dividends paid to shareholders	(55,493)	(53,481)
Repayment of debt	(5,000)	(23,125)
Proceeds from issuance of debt	0	550,000
Payment for debt issuance costs	0	(6,797)
Net borrowing (repayment) of commercial paper	(76,409)	(7,196)
Acquisition of treasury stock	(334,469)	(298,314)
Net receipts (payments) from deposit product	(95,626)	(87,561)
Cash provided from (used for) financing activities	(509,424)	108,591
Effect of foreign exchange rate changes on cash	(6,535)	2,843
Net increase (decrease) in cash	(54,351)	(41,124)
Cash at beginning of year	121,026	118,563
Cash at end of period	$ 66,675	$ 77,439