CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fixed maturity securities:
Available-for-sale at fair value (amortized cost of $29,035,274 and $28,322,977)	$ 31,148,714	$ 29,642,905
Mortgage loans on real estate (net of allowances of $6,824 and $6,813)	3,292,496	3,129,951
Policy loans	1,451,857	1,468,796
Funds withheld at interest	5,797,183	5,880,203
Short-term investments	431,535	558,284
Other invested assets	1,368,544	1,298,120
Total investments	43,490,329	41,978,259
Cash and cash equivalents	1,502,082	1,525,275
Accrued investment income	364,432	339,452
Premiums receivable and other reinsurance balances	1,886,293	1,797,504
Reinsurance ceded receivables	688,491	637,859
Deferred policy acquisition costs	3,490,509	3,392,437
Other assets	764,488	712,366
Total assets	52,186,624	50,383,152
Liabilities and Stockholders’ Equity
Future policy benefits	19,811,921	19,612,251
Interest-sensitive contract liabilities	14,087,081	13,663,873
Other policy claims and benefits	4,384,072	4,094,640
Other reinsurance balances	397,375	296,899
Deferred income taxes	2,483,584	2,218,328
Other liabilities	1,106,531	1,165,071
Short-term Debt	299,739	0
Long-term debt	1,997,970	2,297,548
Collateral finance and securitization notes	899,482	899,161
Total liabilities	$ 45,467,755	$ 44,247,771
Commitments and contingent liabilities (See Note 8)
Stockholders’ Equity:
Preferred stock - par value $.01 per share, 10,000,000 shares authorized, no shares issued or outstanding	$ 0	$ 0
Common stock - par value $.01 per share, 140,000,000 shares authorized, 79,137,758 shares issued at March 31, 2016 and December 31, 2015	791	791
Additional paid-in-capital	1,827,646	1,816,142
Retained earnings	4,668,588	4,620,303
Treasury stock, at cost - 15,072,348 and 13,933,232 shares	(1,108,539)	(1,010,139)
Accumulated other comprehensive income	1,330,383	708,284
Total stockholders’ equity	6,718,869	6,135,381
Total liabilities and stockholders’ equity	$ 52,186,624	$ 50,383,152