New Accounting Standards - Schedule of Liability for Future Policy Benefits, Nonparticipating Traditional Life (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Jan. 01, 2021	Dec. 31, 2020
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at current discount rates as of January 1, 2021	$ 18,746,514	$ 18,040,042
As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at current discount rates as of January 1, 2021		$ 16,721,846
Life
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	2,680,296		$ 4,063,063		$ 9,057,475
Effect of capping and flooring					19,334
Balance, net of reinsurance, at current discount rates as of January 1, 2021	14,698,572		14,844,463	$ 19,987,227
Life | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					10,910,418
Health
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	(210,656)		111,116		853,606
Effect of capping and flooring					30,023
Balance, net of reinsurance, at current discount rates as of January 1, 2021	2,276,018		2,309,967	2,998,631
Health | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					2,115,002
United American | Health
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	(379)		125,668		75,652
Effect of capping and flooring					6,506
Balance, net of reinsurance, at current discount rates as of January 1, 2021	132,939		145,585	213,663
United American | Health | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					131,505
Family Heritage | Health
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	(268,706)		(137,367)		497,250
Effect of capping and flooring					0
Balance, net of reinsurance, at current discount rates as of January 1, 2021	1,496,644		1,472,909	1,880,378
Family Heritage | Health | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					1,383,128
Liberty National | Life
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	210,064		407,331		1,229,610
Effect of capping and flooring					2,433
Balance, net of reinsurance, at current discount rates as of January 1, 2021	2,397,886		2,488,696	3,372,114
Liberty National | Life | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					2,140,071
Liberty National | Health
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	42,269		89,077		219,992
Effect of capping and flooring					19,324
Balance, net of reinsurance, at current discount rates as of January 1, 2021	518,268		561,935	740,628
Liberty National | Health | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					501,312
American Income | Life
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	914,681		1,377,565		3,334,600
Effect of capping and flooring					0
Balance, net of reinsurance, at current discount rates as of January 1, 2021	5,195,290		5,132,796	6,875,917
American Income | Life | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					3,541,317
American Income | Health
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	13,492		26,397		60,366
Effect of capping and flooring					0
Balance, net of reinsurance, at current discount rates as of January 1, 2021	127,340		128,480	162,364
American Income | Health | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					101,998
DTC | Life
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	894,336		1,369,441		2,195,430
Effect of capping and flooring					16,899
Balance, net of reinsurance, at current discount rates as of January 1, 2021	3,503,406		3,501,502	4,704,555
DTC | Life | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					2,492,226
DTC | Health
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions	2,668		7,341		346
Effect of capping and flooring					4,193
Balance, net of reinsurance, at current discount rates as of January 1, 2021	$ 827		$ 1,058	1,598
DTC | Health | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					(2,941)
Other | Life
Liability for Future Policy Benefit, Activity [Line Items]
Effect of changes in discount rate assumptions					2,297,835
Effect of capping and flooring					2
Balance, net of reinsurance, at current discount rates as of January 1, 2021				$ 5,034,641
Other | Life | As Previously Reported
Liability for Future Policy Benefit, Activity [Line Items]
Balance, net of reinsurance, at original discount rates as of December 31, 2020					$ 2,736,804