v3.25.2
BUSINESS SEGMENT INFORMATION - Operations by Segment - Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets $ 124,736 $ 117,566
Aflac Japan    
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets 96,592 90,210
Aflac U.S.    
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets 22,038 21,930
Corporate and other    
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets $ 6,106 $ 5,426