Policy Liabilities - Schedule of Liability For Future Policy Benefits To Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
At Original Discount Rates
Deferred profit liability	$ 178,199	$ 174,717	$ 175,883
Deferred annuity	656,573	773,039	954,318
Interest sensitive life	723,389	732,948	739,105
Other	8,923	9,951	10,106
Total future policy benefits	17,552,564	16,984,615	16,355,726
At Current Discount Rates
Deferred profit liability	178,199	174,717	175,883
Deferred annuity	656,573	773,039	954,318
Interest sensitive life	723,389	732,948	739,105
Other	8,926	9,945	10,099
Net liability for future policy benefits—long duration health	18,457,263	19,460,353	18,097,341
Life
At Original Discount Rates
Net liability for future policy benefits—long duration life	13,453,055	12,854,655	12,121,521
At Current Discount Rates
Net liability for future policy benefits—long duration health	14,577,140	15,390,289	14,014,147
Net liability for future policy benefits—long duration health	14,577,140	15,390,289	14,014,147
Health
At Original Discount Rates
Net liability for future policy benefits—long duration life	2,532,425	2,439,305	2,354,793
At Current Discount Rates
Net liability for future policy benefits—long duration health	2,313,036	2,379,415	2,203,789
Net liability for future policy benefits—long duration health	2,313,036	2,379,415	2,203,789
American Income | Life
At Original Discount Rates
Net liability for future policy benefits—long duration life	4,851,995	4,538,775	4,163,111
At Current Discount Rates
Net liability for future policy benefits—long duration health	5,224,897	5,482,036	4,846,063
Net liability for future policy benefits—long duration health	5,224,897	5,482,036	4,846,063
American Income | Health
At Original Discount Rates
Net liability for future policy benefits—long duration life	124,309	114,407	111,128
At Current Discount Rates
Net liability for future policy benefits—long duration health	132,870	129,980	122,502
Net liability for future policy benefits—long duration health	132,870	129,980	122,502
Direct to Consumer | Life
At Original Discount Rates
Net liability for future policy benefits—long duration life	3,156,039	2,992,493	2,797,031
At Current Discount Rates
Net liability for future policy benefits—long duration health	3,502,224	3,665,180	3,320,140
Net liability for future policy benefits—long duration health	3,502,224	3,665,180	3,320,140
Direct to Consumer | Health
At Original Discount Rates
Net liability for future policy benefits—long duration life	738	737	979
At Current Discount Rates
Net liability for future policy benefits—long duration health	765	772	1,023
Net liability for future policy benefits—long duration health	765	772	1,023
Liberty National | Life
At Original Discount Rates
Net liability for future policy benefits—long duration life	2,293,197	2,260,421	2,206,857
At Current Discount Rates
Net liability for future policy benefits—long duration health	2,329,070	2,481,440	2,342,487
Net liability for future policy benefits—long duration health	2,329,070	2,481,440	2,342,487
Liberty National | Health
At Original Discount Rates
Net liability for future policy benefits—long duration life	462,712	476,559	494,155
At Current Discount Rates
Net liability for future policy benefits—long duration health	477,886	516,903	524,037
Net liability for future policy benefits—long duration health	477,886	516,903	524,037
Other premium | Life
At Original Discount Rates
Net liability for future policy benefits—long duration life	3,151,824	3,062,966	2,954,522
At Current Discount Rates
Net liability for future policy benefits—long duration health	3,520,949	3,761,633	3,505,457
Net liability for future policy benefits—long duration health	3,520,949	3,761,633	3,505,457
United American | Health
At Original Discount Rates
Net liability for future policy benefits—long duration life	100,480	124,021	141,362
At Current Discount Rates
Net liability for future policy benefits—long duration health	99,822	127,537	142,383
Net liability for future policy benefits—long duration health	99,822	127,537	142,383
Family Heritage | Health
At Original Discount Rates
Net liability for future policy benefits—long duration life	1,844,186	1,723,581	1,607,169
At Current Discount Rates
Net liability for future policy benefits—long duration health	1,601,693	1,604,223	1,413,844
Net liability for future policy benefits—long duration health	$ 1,601,693	$ 1,604,223	$ 1,413,844