Deferred Acquisition Costs - Schedule of Deferred Policy Acquisition Costs to Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	$ 5,778,732		$ 5,535,697	$ 5,306,420			$ 4,587,547	$ 4,595,444
Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	5,065,265	$ 4,952,262	4,844,291	4,634,675	$ 4,528,420	$ 4,412,015	3,983,021	3,982,159
Health
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	709,669	697,958	686,763	666,209	657,275	649,082	596,217	610,069
Annuity
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	3,798			5,536			8,309	3,216
United American | Health
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	75,349	76,388	77,394	79,174	80,204	81,140	65,020	74,353
American Income | Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	2,417,480	2,332,600	2,258,291	2,116,771	2,042,907	1,960,254	1,647,761	1,647,761
American Income | Health
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	62,285	59,890	57,811	53,776	51,820	49,406	39,477	39,477
Family Heritage | Health
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	433,999	425,145	416,608	401,722	394,925	388,967	364,751	364,751
DTC | Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	1,714,715	1,699,588	1,676,931	1,630,734	1,608,739	1,583,695	1,498,970	1,498,435
DTC | Health
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	1,760	1,807	1,854	1,945	1,988	2,032	2,215	6,600
Liberty National | Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	636,209	622,532	610,723	586,898	575,838	566,419	531,504	531,504
Liberty National | Health
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	136,276	134,728	133,096	129,592	128,338	127,537	124,754	124,888
Other | Life
Deferred Policy Acquisition Cost [Line Items]
Deferred acquisition costs	$ 296,861	$ 297,542	$ 298,346	$ 300,272	$ 300,936	$ 301,647	$ 304,786	$ 304,459