v3.25.2
BUSINESS SEGMENT INFORMATION - Operations by Segment - Revenues (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]        
Net earned premiums [1] $ 3,470 $ 3,325 $ 6,851 $ 6,781
Net investment income 1,081 1,095 2,036 2,095
Other income 30 22 55 52
Total revenues 4,160 5,138 7,558 10,575
Net investment gains (losses) (421) 696 (1,384) 1,647
Remeasurement gain (loss), deferred profit liability for limited-payment contracts   (2)   (5)
Change in value of federal historic rehabilitation and solar tax credit investments (8) (30) (16) (62)
Federal historic rehabilitation and solar tax credits, amount 9 31 16 64
Operating Segments        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Total revenues 4,536 4,380 8,855 8,800
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Net investment gains (losses) (421) 696 (1,384) 1,647
Amortized hedge costs 11 7 18 13
Amortized hedge income (30) (34) (60) (62)
Net interest (income) expense from derivatives associated with certain investment strategies 64 89 129 177
Aflac Japan | Operating Segments        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Net earned premiums [1] 1,761 1,715 3,442 3,531
Net investment income 699 725 1,285 1,374
Other income 12 7 17 14
Total revenues [1] 2,472 2,447 4,744 4,919
Aflac U.S. | Operating Segments        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Net earned premiums 1,504 1,455 3,006 2,930
Net investment income 207 218 409 424
Other income 17 11 34 30
Total revenues 1,728 1,684 3,449 3,384
Corporate and other | Operating Segments        
Segment Reporting, Revenue Reconciling Item [Line Items]        
Total revenues [2] $ 336 $ 249 $ 662 $ 497
[1] Includes a gain (loss) of an immaterial amount and $(2) for the three-month periods and an immaterial amount and $(5) for the six-month periods ended June 30, 2025 and 2024, respectively, related to remeasurement of the deferred profit liability for limited-payment contracts.
[2] The change in value of federal historic rehabilitation and solar investments in partnerships of $8 and $30 for the three-month periods and $16 and $62 for the six-month periods ended June 30, 2025, and 2024, respectively, is included as a reduction to net investment income. Tax credits on these investments of $9 and $31 for the three-month periods and $16 and $64 for the six-month periods ended June 30, 2025, and 2024, respectively, have been recorded as an income tax benefit in the consolidated statements of earnings. See Note 3 for additional information on these investments.