Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investments:
Fixed maturities—available for sale, at fair value (amortized cost: 2020—$17,197,145; 2019—$16,415,776, allowance for credit losses: 2020— $3,346; 2019— $0)	$ 21,213,509	$ 18,907,147
Policy loans	584,379	575,492
Other long-term investments (includes: 2020—$385,038; 2019—$185,851 under the fair value option)	546,981	326,347
Short-term investments	107,782	38,285
Total investments	22,452,651	19,847,271
Cash	94,847	75,933
Accrued investment income	248,991	245,129
Other receivables	474,180	441,662
Deferred acquisition costs	4,595,444	4,341,941
Goodwill	441,591	441,591
Other assets	739,027	583,933
Total assets	29,046,731	25,977,460
Liabilities:
Future policy benefits	15,243,536	14,508,134
Unearned and advance premium	61,728	63,709
Policy claims and other benefits payable	399,507	365,402
Other policyholders' funds	97,968	96,282
Total policy liabilities	15,802,739	15,033,527
Current and deferred income taxes	1,833,723	1,476,832
Short-term debt	254,918	298,738
Long-term debt (estimated fair value: 2020—$1,871,754; 2019—$1,473,364)	1,667,886	1,348,988
Other liabilities	716,373	525,068
Total liabilities	20,275,639	18,683,153
Commitments and Contingencies (Note 6)
Shareholders' equity:
Preferred stock, par value $1 per share—5,000,000 shares authorized; outstanding: 0 in 2020 and 2019	0	0
Common stock, par value $1 per share—320,000,000 shares authorized; outstanding: (2020—113,218,183 issued; 2019— 117,218,183 issued)	113,218	117,218
Additional paid-in-capital	527,435	531,554
Accumulated other comprehensive income (loss)	3,029,244	1,844,830
Retained earnings	5,874,109	5,551,329
Treasury stock, at cost: (2020—9,420,699 shares; 2019—9,497,940 shares)	(772,914)	(750,624)
Total shareholders' equity	8,771,092	7,294,307
Total liabilities and shareholders' equity	$ 29,046,731	$ 25,977,460