v3.25.2
POLICY LIABILITIES - Schedule of Weighted-Average Interest Rate and Liability for Future Policy Benefit (Details)
Jun. 30, 2025
Dec. 31, 2024
Aflac Japan | Cancer    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 3.80% 3.90%
Weighted-average interest, current discount rate [1] 2.80% 2.20%
Weighted-average liability duration 12 years 7 months 6 days 12 years 7 months 6 days
Aflac Japan | Medical and other health    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 2.50% 2.50%
Weighted-average interest, current discount rate [1] 3.40% 2.80%
Weighted-average liability duration 23 years 23 years 6 months
Aflac Japan | Life insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 2.10% 2.10%
Weighted-average interest, current discount rate [1] 2.60% 2.10%
Weighted-average liability duration 16 years 2 months 12 days 16 years 1 month 6 days
Aflac Japan | Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 1.80% 1.80%
Weighted-average interest, current discount rate [1] 3.10% 2.50%
Weighted-average liability duration 16 years 4 months 24 days 16 years 8 months 12 days
Aflac U.S. | Life insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 3.90% 3.80%
Weighted-average interest, current discount rate [1] 5.40% 5.30%
Weighted-average liability duration 13 years 6 months 13 years 6 months
Aflac U.S. | Accident    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 4.00% 4.00%
Weighted-average interest, current discount rate [1] 5.30% 5.30%
Weighted-average liability duration 7 years 7 months 6 days 7 years 8 months 12 days
Aflac U.S. | Disability    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 4.30% 4.30%
Weighted-average interest, current discount rate [1] 5.10% 5.20%
Weighted-average liability duration 5 years 7 months 6 days 5 years 7 months 6 days
Aflac U.S. | Critical Care    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 4.60% 4.60%
Weighted-average interest, current discount rate [1] 5.50% 5.30%
Weighted-average liability duration 11 years 11 years 1 month 6 days
Aflac U.S. | Hospital Indemnity    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 4.50% 4.50%
Weighted-average interest, current discount rate [1] 5.40% 5.30%
Weighted-average liability duration 9 years 9 years
Aflac U.S. | Dental/Vision    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 4.30% 4.30%
Weighted-average interest, current discount rate [1] 5.30% 5.30%
Weighted-average liability duration 7 years 7 months 6 days 7 years 7 months 6 days
Aflac U.S. | Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Weighted-average interest, original discount rate [1] 5.40% 5.40%
Weighted-average interest, current discount rate [1] 5.40% 5.30%
Weighted-average liability duration 8 years 4 months 24 days 9 years 1 month 6 days
[1] The weighted-average interest rates are calculated using the reserve balances as the weights. No adjustments were made to observable market information.