Deferred Acquisition Costs - Schedule of Analysis of Deferred Acquisition Costs (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				$ 5,535,697				$ 5,067,539	$ 5,535,697	$ 5,067,539
Amortization expense	$ (97,541)	$ (95,757)	$ (94,080)	(92,322)	$ (90,131)	$ (88,012)	$ (86,185)	(84,496)	(379,700)	(348,824)	$ (317,616)
Ending Balance	6,009,477				5,535,697				6,009,477	5,535,697	5,067,539
Life
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				4,844,291				4,412,015	4,844,291	4,412,015	3,983,021
Capitalizations									751,704	742,572	701,195
Amortization expense									(327,426)	(298,841)	(270,928)
Foreign exchange adjustment									3,206	(11,455)	(1,273)
Ending Balance	5,271,775				4,844,291				5,271,775	4,844,291	4,412,015
Health
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				686,763				649,082	686,763	649,082	612,718
Capitalizations									98,465	86,371	81,294
Amortization expense									(50,598)	(48,184)	(44,824)
Foreign exchange adjustment									105	(506)	(106)
Ending Balance	734,735				686,763				734,735	686,763	649,082
American Income | Life
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				2,258,291				1,960,254	2,258,291	1,960,254	1,647,760
Capitalizations									471,771	450,600	435,154
Amortization expense									(159,898)	(141,108)	(121,387)
Foreign exchange adjustment									3,206	(11,455)	(1,273)
Ending Balance	2,573,370				2,258,291				2,573,370	2,258,291	1,960,254
American Income | Health
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				57,811				49,406	57,811	49,406	39,477
Capitalizations									12,849	12,378	12,992
Amortization expense									(3,982)	(3,467)	(2,957)
Foreign exchange adjustment									105	(506)	(106)
Ending Balance	66,783				57,811				66,783	57,811	49,406
DTC | Life
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				1,676,931				1,583,695	1,676,931	1,583,695	1,498,971
Capitalizations									159,650	188,083	174,524
Amortization expense									(99,464)	(94,847)	(89,800)
Foreign exchange adjustment									0	0	0
Ending Balance	1,737,117				1,676,931				1,737,117	1,676,931	1,583,695
DTC | Health
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				1,854				2,032	1,854	2,032	2,216
Capitalizations									0	4	2
Amortization expense									(175)	(182)	(186)
Foreign exchange adjustment									0	0	0
Ending Balance	1,679				1,854				1,679	1,854	2,032
Liberty National | Life
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				610,723				566,419	610,723	566,419	531,504
Capitalizations									107,230	90,385	77,540
Amortization expense									(51,534)	(46,081)	(42,625)
Foreign exchange adjustment									0	0	0
Ending Balance	666,419				610,723				666,419	610,723	566,419
Liberty National | Health
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				133,096				127,537	133,096	127,537	124,754
Capitalizations									20,309	18,737	15,822
Amortization expense									(13,464)	(13,178)	(13,039)
Foreign exchange adjustment									0	0	0
Ending Balance	139,941				133,096				139,941	133,096	127,537
Other premium | Life
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				298,346				301,647	298,346	301,647	304,786
Capitalizations									13,053	13,504	13,977
Amortization expense									(16,530)	(16,805)	(17,116)
Foreign exchange adjustment									0	0	0
Ending Balance	294,869				298,346				294,869	298,346	301,647
United American | Health
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				77,394				81,140	77,394	81,140	81,520
Capitalizations									1,941	2,135	4,427
Amortization expense									(5,846)	(5,881)	(4,807)
Foreign exchange adjustment									0	0	0
Ending Balance	73,489				77,394				73,489	77,394	81,140
Family Heritage | Health
Movement Analysis of Deferred Policy Acquisition Costs
Beginning Balance				$ 416,608				$ 388,967	416,608	388,967	364,751
Capitalizations									63,366	53,117	48,051
Amortization expense									(27,131)	(25,476)	(23,835)
Foreign exchange adjustment									0	0	0
Ending Balance	$ 452,843				$ 416,608				$ 452,843	$ 416,608	$ 388,967