Policy Liabilities - Schedule of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefits And Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Life
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	$ 52,412,899	$ 51,329,931	$ 50,158,449
PV of expected future gross premiums, At original discount rates	28,780,846	28,149,266	27,455,738
Expected future gross premiums	29,644,321	28,448,310	28,899,367
PV of expected future net premiums, Not discounted	21,044,005	21,449,048	21,584,244
PV of expected future net premiums, At original discount rates	11,429,208	11,638,920	11,709,368	$ 11,442,919
PV of expected future net premiums, At current discount rates	11,768,645	11,757,317	12,342,307	11,748,528
PV of expected future policy benefits, Not discounted	80,120,663	79,213,296	77,685,477
PV of expected future policy benefits, At original discount rates	25,457,642	25,091,824	24,563,696	23,564,337
PV of expected future policy benefits, At current discount rates	26,988,845	26,334,284	27,723,158	25,749,961
Life | American Income
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	26,709,794	25,492,032	24,265,464
PV of expected future gross premiums, At original discount rates	15,068,860	14,410,088	13,695,495
Expected future gross premiums	15,424,780	14,471,277	14,264,077
PV of expected future net premiums, Not discounted	8,350,443	8,233,110	8,001,107
PV of expected future net premiums, At original discount rates	4,710,303	4,656,710	4,523,329	4,246,723
PV of expected future net premiums, At current discount rates	4,792,153	4,645,917	4,681,888	4,273,156
PV of expected future policy benefits, Not discounted	33,211,854	31,831,310	30,623,947
PV of expected future policy benefits, At original discount rates	9,905,431	9,508,589	9,061,833	8,409,761
PV of expected future policy benefits, At current discount rates	10,358,054	9,870,692	10,163,627	9,119,104
Life | Direct to Consumer
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	17,249,507	17,372,446	17,506,091
PV of expected future gross premiums, At original discount rates	9,027,497	9,077,304	9,150,049
Expected future gross premiums	9,390,147	9,258,880	9,761,706
PV of expected future net premiums, Not discounted	10,110,468	10,481,376	10,774,655
PV of expected future net premiums, At original discount rates	5,321,113	5,504,912	5,664,259	5,680,864
PV of expected future net premiums, At current discount rates	5,542,616	5,622,906	6,052,651	5,910,224
PV of expected future policy benefits, Not discounted	25,607,204	25,841,419	25,723,752
PV of expected future policy benefits, At original discount rates	8,616,929	8,660,948	8,656,752	8,477,892
PV of expected future policy benefits, At current discount rates	9,205,616	9,125,112	9,714,516	9,225,451
Life | Liberty National
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	4,980,287	4,837,598	4,660,783
PV of expected future gross premiums, At original discount rates	2,900,642	2,817,204	2,720,264
Expected future gross premiums	2,917,146	2,775,304	2,784,916
PV of expected future net premiums, Not discounted	1,744,779	1,849,200	1,897,696
PV of expected future net premiums, At original discount rates	988,843	1,047,022	1,077,831	1,066,123
PV of expected future net premiums, At current discount rates	1,008,538	1,048,447	1,129,716	1,094,407
PV of expected future policy benefits, Not discounted	9,008,086	9,073,624	8,905,815
PV of expected future policy benefits, At original discount rates	3,291,890	3,340,219	3,338,252	3,272,980
PV of expected future policy benefits, At current discount rates	3,371,175	3,377,517	3,605,392	3,429,256
Life | Other
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	3,473,311	3,627,855	3,726,111
PV of expected future gross premiums, At original discount rates	1,783,847	1,844,670	1,889,930
Expected future gross premiums	1,912,248	1,942,849	2,088,668
PV of expected future net premiums, Not discounted	838,315	885,362	910,786
PV of expected future net premiums, At original discount rates	408,949	430,276	443,949	449,209
PV of expected future net premiums, At current discount rates	425,338	440,047	478,052	470,741
PV of expected future policy benefits, Not discounted	12,293,519	12,466,943	12,431,963
PV of expected future policy benefits, At original discount rates	3,643,392	3,582,068	3,506,859	3,403,704
PV of expected future policy benefits, At current discount rates	4,054,000	3,960,963	4,239,623	3,976,150
Health
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	24,697,555	20,652,684	19,516,632
PV of expected future gross premiums, At original discount rates	14,632,076	12,408,312	11,744,155
Expected future gross premiums	14,649,832	12,071,436	11,834,715
PV of expected future net premiums, Not discounted	13,316,299	10,740,051	10,005,242
PV of expected future net premiums, At original discount rates	7,947,241	6,512,063	6,069,295	5,366,305
PV of expected future net premiums, At current discount rates	7,944,659	6,314,148	6,089,728	5,207,422
PV of expected future policy benefits, Not discounted	18,888,215	16,050,185	15,020,883
PV of expected future policy benefits, At original discount rates	10,479,149	9,006,730	8,484,970	7,710,767
PV of expected future policy benefits, At current discount rates	10,316,547	8,586,253	8,441,002	7,394,349
Health | United American
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	12,730,369	9,350,851	8,682,707
PV of expected future gross premiums, At original discount rates	7,651,632	5,738,332	5,295,148
Expected future gross premiums	7,732,883	5,643,454	5,396,402
PV of expected future net premiums, Not discounted	8,782,379	6,442,648	5,955,294
PV of expected future net premiums, At original discount rates	5,273,275	3,948,855	3,625,803	2,941,262
PV of expected future net premiums, At current discount rates	5,330,081	3,885,530	3,697,771	2,908,501
PV of expected future policy benefits, Not discounted	8,864,386	6,584,800	6,148,565
PV of expected future policy benefits, At original discount rates	5,296,183	4,026,860	3,741,530	3,080,633
PV of expected future policy benefits, At current discount rates	5,345,453	3,960,432	3,814,328	3,046,829
Health | Family Heritage
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	7,541,348	7,242,884	6,739,913
PV of expected future gross premiums, At original discount rates	4,394,554	4,220,293	3,982,571
Expected future gross premiums	4,239,286	3,938,234	3,844,287
PV of expected future net premiums, Not discounted	3,238,994	3,188,017	2,997,954
PV of expected future net premiums, At original discount rates	1,895,803	1,867,873	1,783,173	1,729,219
PV of expected future net premiums, At current discount rates	1,822,012	1,734,875	1,711,741	1,594,992
PV of expected future policy benefits, Not discounted	7,540,691	7,176,690	6,655,694
PV of expected future policy benefits, At original discount rates	3,845,648	3,712,044	3,506,689	3,336,344
PV of expected future policy benefits, At current discount rates	3,586,908	3,336,546	3,315,880	3,005,664
Health | American Income
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	2,001,778	1,770,862	1,768,231
PV of expected future gross premiums, At original discount rates	1,059,232	992,641	991,448
Expected future gross premiums	1,100,150	1,012,919	1,047,348
PV of expected future net premiums, Not discounted	462,290	400,512	359,248
PV of expected future net premiums, At original discount rates	245,300	225,141	201,869	192,631
PV of expected future net premiums, At current discount rates	248,400	223,247	206,381	190,296
PV of expected future policy benefits, Not discounted	821,453	709,637	640,326
PV of expected future policy benefits, At original discount rates	380,082	348,711	315,431	303,713
PV of expected future policy benefits, At current discount rates	393,599	355,303	335,504	312,750
Health | Direct to Consumer
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	419,608	248,646	236,776
PV of expected future gross premiums, At original discount rates	249,370	157,812	149,119
Expected future gross premiums	257,172	159,862	156,612
PV of expected future net premiums, Not discounted	339,996	208,577	174,738
PV of expected future net premiums, At original discount rates	201,449	131,919	109,880	87,751
PV of expected future net premiums, At current discount rates	207,323	133,377	115,363	90,143
PV of expected future policy benefits, Not discounted	316,089	204,099	163,087
PV of expected future policy benefits, At original discount rates	191,272	127,975	104,501	85,212
PV of expected future policy benefits, At current discount rates	196,732	129,277	109,482	87,532
Health | Liberty National
Liability for Future Policy Benefit, Activity [Line Items]
PV of expected future gross premiums, Not discounted	2,004,452	2,039,441	2,089,005
PV of expected future gross premiums, At original discount rates	1,277,288	1,299,234	1,325,869
Expected future gross premiums	1,320,341	1,316,967	1,390,066
PV of expected future net premiums, Not discounted	492,640	500,297	518,008
PV of expected future net premiums, At original discount rates	331,414	338,275	348,570	415,442
PV of expected future net premiums, At current discount rates	336,843	337,119	358,472	423,490
PV of expected future policy benefits, Not discounted	1,345,596	1,374,959	1,413,211
PV of expected future policy benefits, At original discount rates	765,964	791,140	816,819	904,865
PV of expected future policy benefits, At current discount rates	$ 793,855	$ 804,695	$ 865,808	$ 941,574