Policy Liabilities - Schedule of Weighted Average Duration of Liability For Future Policy Benefits (Details)	Jun. 30, 2025	Jun. 30, 2024
Life \| American Income
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	22 years 7 months 6 days	23 years 10 days
At current discount rates	22 years 5 months 1 day	23 years 2 months 1 day
Life \| DTC
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	19 years 25 days	19 years 5 months 8 days
At current discount rates	19 years 10 months 9 days	20 years 7 months 28 days
Life \| Liberty National
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	15 years 4 months 6 days	15 years 2 months 19 days
At current discount rates	15 years 2 months 4 days	15 years 4 months 24 days
Life \| Other premium
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	15 years 9 months 29 days	16 years 1 month 6 days
At current discount rates	16 years 6 months 10 days	17 years 2 months 23 days
Health \| American Income
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	12 years 5 months 12 days	12 years 4 months 6 days
At current discount rates	12 years 4 months 13 days	12 years 6 months 18 days
Health \| DTC
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	11 years 8 months 4 days	11 years 7 months 2 days
At current discount rates	10 years 5 months 26 days	10 years 7 months 20 days
Health \| Liberty National
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	9 years 4 months 28 days	9 years 3 months 3 days
At current discount rates	9 years 2 months 19 days	9 years 3 months 3 days
Health \| United American
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	11 years 8 months 4 days	11 years 7 months 2 days
At current discount rates	10 years 5 months 26 days	10 years 7 months 20 days
Health \| Family Heritage
Liability for Future Policy Benefit, Activity [Line Items]
At original discount rates	15 years 3 months 10 days	15 years 1 month 28 days
At current discount rates	14 years	14 years 2 months 15 days