CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fixed maturity securities:
Available-for-sale at fair value (amortized cost of $33,738,334 and $30,211,787)	$ 36,345,426	$ 32,093,625
Mortgage loans on real estate (net of allowances of $8,156 and $7,685)	4,104,487	3,775,522
Policy loans	1,406,774	1,427,602
Funds withheld at interest	5,968,856	5,875,919
Short-term investments	123,308	76,710
Other invested assets	1,498,370	1,591,940
Total investments	49,447,221	44,841,318
Cash and cash equivalents	1,123,350	1,200,718
Accrued investment income	388,008	347,173
Premiums receivable and other reinsurance balances	2,205,631	1,930,755
Reinsurance ceded receivables	798,365	683,972
Deferred policy acquisition costs	3,334,094	3,338,605
Other assets	841,403	755,338
Total assets	58,138,072	53,097,879
Liabilities and Stockholders’ Equity
Future policy benefits	20,665,256	19,581,573
Interest-sensitive contract liabilities	16,440,873	14,029,354
Other policy claims and benefits	4,809,780	4,263,026
Other reinsurance balances	399,517	388,989
Deferred income taxes	3,162,666	2,770,640
Other liabilities	1,077,223	1,041,880
Long-term debt	2,788,494	3,088,635
Collateral finance and securitization notes	823,108	840,700
Total liabilities	50,166,917	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 June 30, 2017 and December 31, 2016	791	791
Additional paid-in capital	1,860,001	1,848,611
Retained earnings	5,523,622	5,199,130
Treasury stock, at cost - 14,645,901 and 14,835,256 shares	(1,085,157)	(1,094,779)
Accumulated other comprehensive income	1,671,898	1,139,329
Total stockholders’ equity	7,971,155	7,093,082
Total liabilities and stockholders’ equity	$ 58,138,072	$ 53,097,879