Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net cash provided by operating activities	$ 575,631	$ 517,224
Proceeds from sales, maturities and redemptions of investments:
Fixed maturities, available-for-sale	4,196,254	3,540,606
Mortgage loans on real estate	277,454	323,332
Limited partnership interests, other corporation interests and other investments	4,001	6,674
Purchases of investments:
Fixed maturities, available-for-sale	(2,791,939)	(1,811,311)
Mortgage loans on real estate	(233,924)	(362,962)
Limited partnership interests, other corporation interests and other investments	(1,496)	(2,335)
Net change in short-term investments	(2,198,699)	(2,785,846)
Net change in policy loans	(7,481)	(10,413)
Acquisition of business	0	(28,356)
Purchases of furniture, equipment and software	(60,321)	(17,076)
Net cash used in investing activities	(816,151)	(1,147,687)
Cash flows from financing activities:
Contract deposits	1,760,310	2,046,736
Contract withdrawals	(1,308,587)	(1,279,520)
Net change in due to/from parent and affiliates	(15,686)	69,219
Dividends paid	(139,711)	(178,401)
Proceeds from financing element derivatives	0	4,263
Payments for and interest paid on financing element derivatives, net	(8,027)	(5,961)
Net change in commercial paper borrowings	(2,305)	999
Net change in book overdrafts	(1,164)	(12,163)
Income tax benefit of stock option exercises	1,031	47
Net cash provided by financing activities	285,861	645,219
Net increase in cash	45,341	14,756
Cash, beginning of year	12,775	7,491
Cash, end of period	58,116	22,247
Net cash (paid) received during the year for:
Income taxes	(29,791)	50,888
Interest	(18,697)	(18,708)
Non-cash investing and financing transactions during the years:
Contingent consideration (See Note 2)	0	(33,739)
Share-based compensation expense	$ 1,247	$ 2,812