Business Segments - Schedule of Segment Premium Income by Distribution Channel (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) segment	Sep. 30, 2023 USD ($)
Segment Reporting [Abstract]
Number of segments | segment			4
Segment Reporting Information [Line Items]
Premium	$ 1,172,593	$ 1,119,335	$ 3,485,002	$ 3,325,345
% of Total	100.00%	100.00%	100.00%	100.00%
Life
Segment Reporting Information [Line Items]
Premium	$ 818,638	$ 788,099	$ 2,438,385	$ 2,342,429
% of Total	100.00%	100.00%	100.00%	100.00%
Health
Segment Reporting Information [Line Items]
Premium	$ 353,955	$ 331,236	$ 1,046,617	$ 982,916
% of Total	100.00%	100.00%	100.00%	100.00%
Annuity
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%
American Income
Segment Reporting Information [Line Items]
Premium	$ 459,116	$ 430,749	$ 1,357,912	$ 1,272,002
% of Total	39.00%	39.00%	39.00%	38.00%
American Income | Life
Segment Reporting Information [Line Items]
Premium	$ 427,839	$ 400,214	$ 1,265,417	$ 1,182,346
% of Total	52.00%	51.00%	52.00%	50.00%
American Income | Health
Segment Reporting Information [Line Items]
Premium	$ 31,277	$ 30,535	$ 92,495	$ 89,656
% of Total	9.00%	9.00%	9.00%	9.00%
American Income | Annuity
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%
Direct to Consumer
Segment Reporting Information [Line Items]
Premium	$ 264,497	$ 265,011	$ 797,374	$ 795,708
% of Total	23.00%	24.00%	23.00%	24.00%
Direct to Consumer | Life
Segment Reporting Information [Line Items]
Premium	$ 246,425	$ 247,858	$ 743,304	$ 744,132
% of Total	30.00%	32.00%	31.00%	32.00%
Direct to Consumer | Health
Segment Reporting Information [Line Items]
Premium	$ 18,072	$ 17,153	$ 54,070	$ 51,576
% of Total	5.00%	5.00%	5.00%	5.00%
Direct to Consumer | Annuity
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%
Liberty National
Segment Reporting Information [Line Items]
Premium	$ 140,902	$ 134,842	$ 419,211	$ 400,554
% of Total	12.00%	12.00%	12.00%	12.00%
Liberty National | Life
Segment Reporting Information [Line Items]
Premium	$ 93,625	$ 88,199	$ 276,599	$ 260,036
% of Total	12.00%	11.00%	11.00%	11.00%
Liberty National | Health
Segment Reporting Information [Line Items]
Premium	$ 47,277	$ 46,643	$ 142,612	$ 140,518
% of Total	13.00%	14.00%	14.00%	14.00%
Liberty National | Annuity
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%
United American
Segment Reporting Information [Line Items]
Premium	$ 151,118	$ 138,879	$ 445,384	$ 412,670
% of Total	13.00%	12.00%	13.00%	13.00%
United American | Life
Segment Reporting Information [Line Items]
Premium	$ 1,608	$ 1,802	$ 5,009	$ 5,533
% of Total	0.00%	0.00%	0.00%	0.00%
United American | Health
Segment Reporting Information [Line Items]
Premium	$ 149,510	$ 137,077	$ 440,375	$ 407,137
% of Total	42.00%	42.00%	42.00%	42.00%
United American | Annuity
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%
Family Heritage
Segment Reporting Information [Line Items]
Premium	$ 109,503	$ 101,389	$ 322,010	$ 298,583
% of Total	9.00%	9.00%	9.00%	9.00%
Family Heritage | Life
Segment Reporting Information [Line Items]
Premium	$ 1,684	$ 1,561	$ 4,945	$ 4,554
% of Total	0.00%	0.00%	0.00%	0.00%
Family Heritage | Health
Segment Reporting Information [Line Items]
Premium	$ 107,819	$ 99,828	$ 317,065	$ 294,029
% of Total	31.00%	30.00%	30.00%	30.00%
Family Heritage | Annuity
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%
Other
Segment Reporting Information [Line Items]
Premium	$ 47,457	$ 48,465	$ 143,111	$ 145,828
% of Total	4.00%	4.00%	4.00%	4.00%
Other | Life
Segment Reporting Information [Line Items]
Premium	$ 47,457	$ 48,465	$ 143,111	$ 145,828
% of Total	6.00%	6.00%	6.00%	7.00%
Other | Health
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%
Other | Annuity
Segment Reporting Information [Line Items]
Premium	$ 0	$ 0	$ 0	$ 0
% of Total	0.00%	0.00%	0.00%	0.00%