CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fixed maturity securities:
Available-for-sale at fair value (amortized cost of $33,889,968 and $30,211,787)	$ 36,381,742	$ 32,093,625
Mortgage loans on real estate (net of allowances of $9,137 and $7,685)	4,322,329	3,775,522
Policy loans	1,340,146	1,427,602
Funds withheld at interest	6,020,336	5,875,919
Short-term investments	80,582	76,710
Other invested assets	1,532,523	1,591,940
Total investments	49,677,658	44,841,318
Cash and cash equivalents	1,204,590	1,200,718
Accrued investment income	420,111	347,173
Premiums receivable and other reinsurance balances	2,411,777	1,930,755
Reinsurance ceded receivables	779,118	683,972
Deferred policy acquisition costs	3,315,237	3,338,605
Other assets	885,540	755,338
Total assets	58,694,031	53,097,879
Liabilities and Stockholders’ Equity
Future policy benefits	21,084,562	19,581,573
Interest-sensitive contract liabilities	16,370,090	14,029,354
Other policy claims and benefits	4,899,367	4,263,026
Other reinsurance balances	415,692	388,989
Deferred income taxes	3,180,545	2,770,640
Other liabilities	1,061,352	1,041,880
Long-term debt	2,788,480	3,088,635
Collateral finance and securitization notes	796,825	840,700
Total liabilities	50,596,913	46,004,797
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 September 30, 2017 and December 31, 2016	791	791
Additional paid-in capital	1,865,699	1,848,611
Retained earnings	5,712,590	5,199,130
Treasury stock, at cost - 14,769,487 and 14,835,256 shares	(1,107,719)	(1,094,779)
Accumulated other comprehensive income	1,625,757	1,139,329
Total stockholders’ equity	8,097,118	7,093,082
Total liabilities and stockholders’ equity	$ 58,694,031	$ 53,097,879