Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Investments:
Fixed maturities—available for sale, at fair value (amortized cost: 2024—$19,504,784; 2023—$18,924,914, allowance for credit losses: 2024— $7,027; 2023— $7,115)	$ 18,144,353	$ 17,870,206
Mortgage loans	329,033	279,199
Policy loans	664,641	657,020
Other long-term investments (includes: 2024—$844,916; 2023—$795,583 under the fair value option)	899,085	835,878
Short-term investments	58,413	81,740
Total investments	20,095,525	19,724,043
Cash	83,547	103,156
Accrued investment income	299,398	270,396
Other receivables	645,966	630,223
Deferred acquisition costs	6,131,237	6,009,477
Goodwill	481,791	481,791
Other assets	833,129	832,413
Total assets	28,570,593	28,051,499
Liabilities:
Future policy benefits	18,882,023	19,460,353
Unearned and advance premium	270,105	254,567
Policy claims and other benefits payable	520,094	514,875
Other policyholders' funds	401,269	236,958
Total policy liabilities	20,073,491	20,466,753
Current and deferred income taxes	630,268	494,639
Short-term debt	733,544	486,113
Long-term debt (estimated fair value: 2024—$1,510,512; 2023—$1,491,229)	1,629,978	1,629,559
Other liabilities	464,151	487,632
Total liabilities	23,531,432	23,564,696
Commitments and Contingencies (Note 5)
Shareholders' equity:
Preferred stock, par value $1 per share—5,000,000 shares authorized; outstanding: 0 in 2024 and 2023	0	0
Common stock, par value $1 per share—320,000,000 shares authorized; outstanding: (2024—102,218,183 issued; 2023—102,218,183 issued)	102,218	102,218
Additional paid-in-capital	526,862	532,474
Accumulated other comprehensive income (loss)	(2,467,236)	(2,772,419)
Retained earnings	7,706,655	7,478,813
Treasury stock, at cost: (2024—8,141,299 shares; 2023—8,426,854 shares)	(829,338)	(854,283)
Total shareholders' equity	5,039,161	4,486,803
Total liabilities and shareholders' equity	$ 28,570,593	$ 28,051,499