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Policy Liabilities - Schedule of Undiscounted And Discounted Expected Future Gross Premiums And Expected Future Benefits And Expenses (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023
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Life |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | $ 52,192,979 |  |  | $ 51,262,031 |  |
PV of expected future gross premiums, At original discount rates | 28,640,387 |  |  | 28,100,488 |  |
Expected future gross premiums | 29,678,228 |  |  | 29,804,051 |  |
PV of expected future net premiums, Not discounted | 21,085,546 |  |  | 21,550,441 |  |
PV of expected future net premiums, At original discount rates | 11,444,385 | $ 11,740,869 | $ 11,638,918 | 11,689,804 | $ 11,836,592 | $ 11,709,368
PV of expected future net premiums, At current discount rates | 11,856,124 | 12,000,397 | 11,757,317 | 12,406,270 | 11,981,537 | 12,342,307
PV of expected future policy benefits, Not discounted | 79,711,349 |  |  | 78,961,606 |  |
PV of expected future policy benefits, At original discount rates | 25,286,652 | 25,548,394 | 25,091,823 | 24,983,499 | 25,004,280 | 24,563,696
PV of expected future policy benefits, At current discount rates | 27,190,935 | 26,942,502 | 26,334,284 | 28,150,367 | 26,507,907 | 27,723,158
Life | American Income |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 26,374,505 |  |  | 25,300,910 |  |
PV of expected future gross premiums, At original discount rates | 14,878,294 |  |  | 14,305,914 |  |
Expected future gross premiums | 15,314,060 |  |  | 15,028,140 |  |
PV of expected future net premiums, Not discounted | 8,272,473 |  |  | 8,185,825 |  |
PV of expected future net premiums, At original discount rates | 4,666,862 | 4,771,460 | 4,656,710 | 4,632,427 | 4,648,111 | 4,523,329
PV of expected future net premiums, At current discount rates | 4,773,483 | 4,818,081 | 4,645,917 | 4,836,994 | 4,635,903 | 4,681,888
PV of expected future policy benefits, Not discounted | 32,774,486 |  |  | 31,554,905 |  |
PV of expected future policy benefits, At original discount rates | 9,758,379 | 9,829,535 | 9,508,588 | 9,413,743 | 9,353,526 | 9,061,833
PV of expected future policy benefits, At current discount rates | 10,365,802 | 10,234,154 | 9,870,692 | 10,504,785 | 9,811,407 | 10,163,627
Life | Direct to Consumer |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 17,362,014 |  |  | 17,506,090 |  |
PV of expected future gross premiums, At original discount rates | 9,081,677 |  |  | 9,144,676 |  |
Expected future gross premiums | 9,507,072 |  |  | 9,825,694 |  |
PV of expected future net premiums, Not discounted | 10,211,558 |  |  | 10,614,237 |  |
PV of expected future net premiums, At original discount rates | 5,370,940 | 5,498,605 | 5,504,912 | 5,572,725 | 5,670,288 | 5,664,259
PV of expected future net premiums, At current discount rates | 5,630,106 | 5,682,370 | 5,622,906 | 5,994,613 | 5,810,518 | 6,052,651
PV of expected future policy benefits, Not discounted | 25,655,289 |  |  | 25,907,169 |  |
PV of expected future policy benefits, At original discount rates | 8,622,092 | 8,742,750 | 8,660,948 | 8,679,305 | 8,748,900 | 8,656,752
PV of expected future policy benefits, At current discount rates | 9,317,397 | 9,278,145 | 9,125,112 | 9,762,022 | 9,289,834 | 9,714,516
Life | Liberty National |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 4,948,417 |  |  | 4,797,146 |  |
PV of expected future gross premiums, At original discount rates | 2,880,523 |  |  | 2,792,129 |  |
Expected future gross premiums | 2,914,411 |  |  | 2,886,943 |  |
PV of expected future net premiums, Not discounted | 1,753,665 |  |  | 1,855,536 |  |
PV of expected future net premiums, At original discount rates | 993,057 | 1,047,994 | 1,047,020 | 1,049,598 | 1,080,642 | 1,077,831
PV of expected future net premiums, At current discount rates | 1,019,068 | 1,063,162 | 1,048,447 | 1,104,096 | 1,085,233 | 1,129,716
PV of expected future policy benefits, Not discounted | 8,975,235 |  |  | 9,028,196 |  |
PV of expected future policy benefits, At original discount rates | 3,280,833 | 3,358,803 | 3,340,219 | 3,327,013 | 3,356,531 | 3,338,252
PV of expected future policy benefits, At current discount rates | 3,402,724 | 3,421,818 | 3,377,517 | 3,602,371 | 3,424,768 | 3,605,392
Life | Other premium |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 3,508,043 |  |  | 3,657,885 |  |
PV of expected future gross premiums, At original discount rates | 1,799,893 |  |  | 1,857,769 |  |
Expected future gross premiums | 1,942,685 |  |  | 2,063,274 |  |
PV of expected future net premiums, Not discounted | 847,850 |  |  | 894,843 |  |
PV of expected future net premiums, At original discount rates | 413,526 | 422,810 | 430,276 | 435,054 | 437,551 | 443,949
PV of expected future net premiums, At current discount rates | 433,467 | 436,784 | 440,047 | 470,567 | 449,883 | 478,052
PV of expected future policy benefits, Not discounted | 12,306,339 |  |  | 12,471,336 |  |
PV of expected future policy benefits, At original discount rates | 3,625,348 | 3,617,306 | 3,582,068 | 3,563,438 | 3,545,323 | 3,506,859
PV of expected future policy benefits, At current discount rates | 4,105,012 | 4,008,385 | 3,960,963 | 4,281,189 | 3,981,898 | 4,239,623
Health |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 23,584,779 |  |  | 20,227,626 |  |
PV of expected future gross premiums, At original discount rates | 13,968,551 |  |  | 12,155,056 |  |
Expected future gross premiums | 14,040,440 |  |  | 12,407,986 |  |
PV of expected future net premiums, Not discounted | 12,565,814 |  |  | 10,457,252 |  |
PV of expected future net premiums, At original discount rates | 7,494,706 | 6,719,593 | 6,512,064 | 6,339,854 | 6,204,884 | 6,069,295
PV of expected future net premiums, At current discount rates | 7,518,346 | 6,627,718 | 6,314,148 | 6,452,555 | 6,007,794 | 6,089,728
PV of expected future policy benefits, Not discounted | 18,047,251 |  |  | 15,707,558 |  |
PV of expected future policy benefits, At original discount rates | 10,012,832 | 9,232,867 | 9,006,731 | 8,827,339 | 8,657,990 | 8,484,970
PV of expected future policy benefits, At current discount rates | 9,904,414 | 8,945,489 | 8,586,253 | 8,898,122 | 8,260,784 | 8,441,002
Health | American Income |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 1,994,296 |  |  | 1,781,677 |  |
PV of expected future gross premiums, At original discount rates | 1,055,588 |  |  | 999,161 |  |
Expected future gross premiums | 1,104,323 |  |  | 1,063,740 |  |
PV of expected future net premiums, Not discounted | 458,318 |  |  | 400,683 |  |
PV of expected future net premiums, At original discount rates | 243,497 | 229,169 | 225,141 | 225,616 | 208,867 | 201,869
PV of expected future net premiums, At current discount rates | 248,228 | 229,830 | 223,247 | 233,789 | 205,889 | 206,381
PV of expected future policy benefits, Not discounted | 813,952 |  |  | 710,352 |  |
PV of expected future policy benefits, At original discount rates | 376,767 | 357,412 | 348,711 | 349,161 | 322,706 | 315,431
PV of expected future policy benefits, At current discount rates | 393,757 | 367,366 | 355,303 | 373,544 | 328,436 | 335,504
Health | Direct to Consumer |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 365,728 |  |  | 232,805 |  |
PV of expected future gross premiums, At original discount rates | 216,063 |  |  | 147,193 |  |
Expected future gross premiums | 224,492 |  |  | 156,142 |  |
PV of expected future net premiums, Not discounted | 293,021 |  |  | 191,566 |  |
PV of expected future net premiums, At original discount rates | 172,370 | 139,486 | 131,919 | 120,719 | 113,247 | 109,880
PV of expected future net premiums, At current discount rates | 178,758 | 143,068 | 133,377 | 127,872 | 114,876 | 115,363
PV of expected future policy benefits, Not discounted | 268,352 |  |  | 187,260 |  |
PV of expected future policy benefits, At original discount rates | 162,830 | 134,276 | 127,975 | 117,586 | 107,143 | 104,501
PV of expected future policy benefits, At current discount rates | 168,701 | 137,532 | 129,277 | 124,457 | 108,617 | 109,482
Health | Liberty National |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 2,007,219 |  |  | 2,037,319 |  |
PV of expected future gross premiums, At original discount rates | 1,278,863 |  |  | 1,297,318 |  |
Expected future gross premiums | 1,326,836 |  |  | 1,370,521 |  |
PV of expected future net premiums, Not discounted | 491,892 |  |  | 495,616 |  |
PV of expected future net premiums, At original discount rates | 331,565 | 329,179 | 338,275 | 335,578 | 338,934 | 348,570
PV of expected future net premiums, At current discount rates | 337,897 | 331,851 | 337,119 | 347,107 | 337,741 | 358,472
PV of expected future policy benefits, Not discounted | 1,350,299 |  |  | 1,375,759 |  |
PV of expected future policy benefits, At original discount rates | 770,544 | 772,935 | 791,141 | 792,956 | 799,316 | 816,819
PV of expected future policy benefits, At current discount rates | 803,114 | 795,244 | 804,695 | 845,775 | 815,778 | 865,808
Health | United American |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 11,818,419 |  |  | 9,068,701 |  |
PV of expected future gross premiums, At original discount rates | 7,092,508 |  |  | 5,556,347 |  |
Expected future gross premiums | 7,196,611 |  |  | 5,742,668 |  |
PV of expected future net premiums, Not discounted | 8,133,104 |  |  | 6,229,763 |  |
PV of expected future net premiums, At original discount rates | 4,874,405 | 4,106,142 | 3,948,856 | 3,812,026 | 3,720,108 | 3,625,803
PV of expected future net premiums, At current discount rates | 4,946,982 | 4,112,123 | 3,885,530 | 3,942,244 | 3,658,491 | 3,697,771
PV of expected future policy benefits, Not discounted | 8,216,151 |  |  | 6,390,307 |  |
PV of expected future policy benefits, At original discount rates | 4,911,012 | 4,153,056 | 4,026,860 | 3,907,780 | 3,823,510 | 3,741,530
PV of expected future policy benefits, At current discount rates | 4,977,350 | 4,154,306 | 3,960,432 | 4,039,311 | 3,758,487 | 3,814,328
Health | Family Heritage |  |  |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |  |  |
PV of expected future gross premiums, Not discounted | 7,399,117 |  |  | 7,107,124 |  |
PV of expected future gross premiums, At original discount rates | 4,325,529 |  |  | 4,155,037 |  |
Expected future gross premiums | 4,188,178 |  |  | 4,074,915 |  |
PV of expected future net premiums, Not discounted | 3,189,479 |  |  | 3,139,624 |  |
PV of expected future net premiums, At original discount rates | 1,872,869 | 1,915,617 | 1,867,873 | 1,845,915 | 1,823,728 | 1,783,173
PV of expected future net premiums, At current discount rates | 1,806,481 | 1,810,846 | 1,734,875 | 1,801,543 | 1,690,797 | 1,711,741
PV of expected future policy benefits, Not discounted | 7,398,497 |  |  | 7,043,880 |  |
PV of expected future policy benefits, At original discount rates | 3,791,679 | 3,815,188 | 3,712,044 | 3,659,856 | 3,605,315 | 3,506,689
PV of expected future policy benefits, At current discount rates | $ 3,561,492 | $ 3,491,041 | $ 3,336,546 | $ 3,515,035 | $ 3,249,466 | $ 3,315,880

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- Definition Amount, before effect of reinsurance and after current period update of cash flow assumption and discount rate change, of expected future policy benefit and expense component of liability for future policy benefit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-6 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29E Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-6 + Details
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