Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Investments:
Fixed maturities—available for sale, at fair value (amortized cost: 2023—$18,526,703; 2022—$18,301,692, allowance for credit losses: 2023— $32,767; 2022— $0)	$ 17,206,885	$ 16,503,365
Policy loans	622,736	614,866
Other long-term investments (includes: 2023—$789,197; 2022—$768,689 under the fair value option)	1,022,611	976,016
Short-term investments	74,377	114,121
Total investments	18,926,609	18,208,368
Cash	172,108	92,559
Accrued investment income	279,445	259,581
Other receivables	594,421	589,079
Deferred acquisition costs	5,654,438	5,535,697
Goodwill	481,791	481,791
Other assets	751,311	760,066
Total assets	26,860,123	25,927,141
Liabilities:
Future policy benefits	18,896,574	18,040,042
Unearned and advance premium	271,517	253,140
Policy claims and other benefits payable	489,296	507,219
Other policyholders' funds	142,686	123,236
Total policy liabilities	19,800,073	18,923,637
Current and deferred income taxes	427,608	434,649
Short-term debt	514,247	449,103
Long-term debt (estimated fair value: 2023—$1,484,172; 2022—$1,440,277)	1,628,354	1,627,952
Other liabilities	643,550	542,223
Total liabilities	23,013,832	21,977,564
Commitments and Contingencies (Note 5)
Shareholders' equity:
Preferred stock, par value $1 per share—5,000,000 shares authorized; outstanding: 0 in 2023 and 2022	0	0
Common stock, par value $1 per share—320,000,000 shares authorized; outstanding: (2023—105,218,183 issued; 2022—105,218,183 issued)	105,218	105,218
Additional paid-in-capital	528,639	529,661
Accumulated other comprehensive income (loss)	(2,961,093)	(2,790,313)
Retained earnings	7,092,544	6,894,535
Treasury stock, at cost: (2023—9,489,745 shares; 2022—8,478,288 shares)	(919,017)	(789,524)
Total shareholders' equity	3,846,291	3,949,577
Total liabilities and shareholders' equity	$ 26,860,123	$ 25,927,141