v3.26.1
POLICY LIABILITIES - Schedule of Changes in Present Value of Expected Future Net Premiums and Expected Future Policy Benefits (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Present value of expected future policy benefits:      
Beginning balance $ 100,522    
Ending balance 95,680 $ 100,522  
Net liability for future policy benefits 59,519 62,320  
Aflac Japan | Cancer      
Present value of expected future net premiums:      
Beginning balance 12,207 14,184  
Beginning balance at original discount rate 13,201 14,008  
Effect of changes in cash flow assumptions   0 $ (661)
Effect of actual variances from expected experience   (147) (436)
Adjusted beginning of period balance   13,054 12,911
Issuances 216 1,114  
Interest accrual 86 364  
Net premiums collected [1] (314) (1,379)  
Foreign currency translation (272) 193  
Other 0 (2)  
Ending balance at original discount rate 12,770 13,201  
Effect of changes in discount rate assumptions (1,252) (994)  
Ending balance 11,518 12,207  
Present value of expected future policy benefits:      
Beginning balance 34,987 40,781  
Beginning balance at original discount rate 36,438 37,856  
Effect of changes in cash flow assumptions   0 (1,130)
Effect of actual variances from expected experience   (168) (483)
Adjusted beginning of period balance   36,270 36,243
Issuances 221 1,138  
Interest accrual 303 1,299  
Benefit payments (638) (2,723)  
Foreign currency translation (750) 481  
Other 0 0  
Ending balance at original discount rate 35,406 36,438  
Effect of changes in discount rate assumptions (2,470) (1,451)  
Ending balance 32,936 34,987  
Net liability for future policy benefits 21,418 22,780  
Less: reinsurance recoverable 4,142 4,406  
Net liability for future policy benefits after reinsurance recoverable 17,276 18,374  
Aflac Japan | Medical and other health      
Present value of expected future net premiums:      
Beginning balance 10,349 11,817  
Beginning balance at original discount rate 11,511 11,845  
Effect of changes in cash flow assumptions   0 136
Effect of actual variances from expected experience   (84) (84)
Adjusted beginning of period balance   11,427 11,897
Issuances 14 253  
Interest accrual 68 292  
Net premiums collected [1] (247) (1,076)  
Foreign currency translation (235) 146  
Other 0 (1)  
Ending balance at original discount rate 11,027 11,511  
Effect of changes in discount rate assumptions (1,402) (1,162)  
Ending balance 9,625 10,349  
Present value of expected future policy benefits:      
Beginning balance 17,692 20,606  
Beginning balance at original discount rate 21,979 21,957  
Effect of changes in cash flow assumptions   0 108
Effect of actual variances from expected experience   (101) (102)
Adjusted beginning of period balance   21,878 21,963
Issuances 15 260  
Interest accrual 134 564  
Benefit payments (237) (1,044)  
Foreign currency translation (452) 236  
Other 0 0  
Ending balance at original discount rate 21,338 21,979  
Effect of changes in discount rate assumptions (4,862) (4,287)  
Ending balance 16,476 17,692  
Net liability for future policy benefits 6,851 7,343  
Less: reinsurance recoverable 994 1,062  
Net liability for future policy benefits after reinsurance recoverable 5,857 6,281  
Aflac Japan | Life insurance      
Present value of expected future net premiums:      
Beginning balance 4,547 5,156  
Beginning balance at original discount rate 4,772 5,084  
Effect of changes in cash flow assumptions   0 (40)
Effect of actual variances from expected experience   (14) (62)
Adjusted beginning of period balance   4,758 4,982
Issuances 83 405  
Interest accrual 26 110  
Net premiums collected [1] (179) (795)  
Foreign currency translation (98) 70  
Other 0 0  
Ending balance at original discount rate 4,590 4,772  
Effect of changes in discount rate assumptions (303) (225)  
Ending balance 4,287 4,547  
Present value of expected future policy benefits:      
Beginning balance 20,894 24,265  
Beginning balance at original discount rate 25,716 26,330  
Effect of changes in cash flow assumptions   0 (101)
Effect of actual variances from expected experience   (18) (61)
Adjusted beginning of period balance   25,698 26,168
Issuances 85 417  
Interest accrual 134 569  
Benefit payments (665) (1,753)  
Foreign currency translation (525) 315  
Other 0 0  
Ending balance at original discount rate 24,727 25,716  
Effect of changes in discount rate assumptions (5,333) (4,822)  
Ending balance 19,394 20,894  
Net liability for future policy benefits 15,107 16,347  
Less: reinsurance recoverable 316 0  
Net liability for future policy benefits after reinsurance recoverable 14,791 16,347  
Aflac Japan | Other      
Present value of expected future net premiums:      
Beginning balance 725 846  
Beginning balance at original discount rate 800 864  
Effect of changes in cash flow assumptions   0 5
Effect of actual variances from expected experience   (3) (12)
Adjusted beginning of period balance   797 857
Issuances 1 9  
Interest accrual 4 16  
Net premiums collected [1] (22) (95)  
Foreign currency translation (17) 13  
Other 0 0  
Ending balance at original discount rate 763 800  
Effect of changes in discount rate assumptions (86) (75)  
Ending balance 677 725  
Present value of expected future policy benefits:      
Beginning balance 3,671 4,225  
Beginning balance at original discount rate 4,758 4,765  
Effect of changes in cash flow assumptions   0 74
Effect of actual variances from expected experience   (8) (21)
Adjusted beginning of period balance   4,750 4,818
Issuances 2 14  
Interest accrual 22 91  
Benefit payments (60) (218)  
Foreign currency translation (98) 53  
Other 0 0  
Ending balance at original discount rate 4,616 4,758  
Effect of changes in discount rate assumptions (1,181) (1,087)  
Ending balance 3,435 3,671  
Net liability for future policy benefits 2,758 2,946  
Less: reinsurance recoverable 0 0  
Net liability for future policy benefits after reinsurance recoverable 2,758 2,946  
Aflac U.S. | Life insurance      
Present value of expected future net premiums:      
Beginning balance 1,021 909  
Beginning balance at original discount rate 1,051 976  
Effect of changes in cash flow assumptions   0 (5)
Effect of actual variances from expected experience   (9) (32)
Adjusted beginning of period balance   1,042 939
Issuances 94 246  
Interest accrual 11 42  
Net premiums collected [1] (44) (171)  
Foreign currency translation 0 0  
Other 0 (5)  
Ending balance at original discount rate 1,103 1,051  
Effect of changes in discount rate assumptions (42) (30)  
Ending balance 1,061 1,021  
Present value of expected future policy benefits:      
Beginning balance 2,076 1,847  
Beginning balance at original discount rate 2,288 2,126  
Effect of changes in cash flow assumptions   0 (17)
Effect of actual variances from expected experience   (13) (53)
Adjusted beginning of period balance   2,275 2,056
Issuances 100 254  
Interest accrual 23 87  
Benefit payments (29) (109)  
Foreign currency translation 0 0  
Other 0 0  
Ending balance at original discount rate 2,369 2,288  
Effect of changes in discount rate assumptions (251) (212)  
Ending balance 2,118 2,076  
Net liability for future policy benefits 1,057 1,055  
Less: reinsurance recoverable 26 25  
Net liability for future policy benefits after reinsurance recoverable 1,031 1,030  
Aflac U.S. | Accident      
Present value of expected future net premiums:      
Beginning balance 2,525 2,497  
Beginning balance at original discount rate 2,637 2,687  
Effect of changes in cash flow assumptions   0 18
Effect of actual variances from expected experience   (23) 21
Adjusted beginning of period balance   2,614 2,726
Issuances 111 295  
Interest accrual 27 110  
Net premiums collected [1] (119) (487)  
Foreign currency translation 0 0  
Other 0 (7)  
Ending balance at original discount rate 2,633 2,637  
Effect of changes in discount rate assumptions (148) (112)  
Ending balance 2,485 2,525  
Present value of expected future policy benefits:      
Beginning balance 3,184 3,127  
Beginning balance at original discount rate 3,348 3,386  
Effect of changes in cash flow assumptions   0 47
Effect of actual variances from expected experience   (36) 9
Adjusted beginning of period balance   3,312 3,442
Issuances 116 300  
Interest accrual 34 138  
Benefit payments (126) (532)  
Foreign currency translation 0 0  
Other 0 0  
Ending balance at original discount rate 3,336 3,348  
Effect of changes in discount rate assumptions (211) (164)  
Ending balance 3,125 3,184  
Net liability for future policy benefits 640 659  
Less: reinsurance recoverable 0 0  
Net liability for future policy benefits after reinsurance recoverable 640 659  
Aflac U.S. | Disability      
Present value of expected future net premiums:      
Beginning balance 1,685 1,635  
Beginning balance at original discount rate 1,726 1,726  
Effect of changes in cash flow assumptions   0 (22)
Effect of actual variances from expected experience   (2) 20
Adjusted beginning of period balance   1,724 1,724
Issuances 109 341  
Interest accrual 18 69  
Net premiums collected [1] (100) (402)  
Foreign currency translation 0 0  
Other 0 (6)  
Ending balance at original discount rate 1,751 1,726  
Effect of changes in discount rate assumptions (62) (41)  
Ending balance 1,689 1,685  
Present value of expected future policy benefits:      
Beginning balance 2,336 2,330  
Beginning balance at original discount rate 2,401 2,466  
Effect of changes in cash flow assumptions   0 (46)
Effect of actual variances from expected experience   (5) 5
Adjusted beginning of period balance   2,396 2,425
Issuances 115 355  
Interest accrual 25 99  
Benefit payments (118) (478)  
Foreign currency translation 0 0  
Other 0 0  
Ending balance at original discount rate 2,418 2,401  
Effect of changes in discount rate assumptions (96) (65)  
Ending balance 2,322 2,336  
Net liability for future policy benefits 633 651  
Less: reinsurance recoverable 0 0  
Net liability for future policy benefits after reinsurance recoverable 633 651  
Aflac U.S. | Critical care      
Present value of expected future net premiums:      
Beginning balance 3,945 3,901  
Beginning balance at original discount rate 4,242 4,340  
Effect of changes in cash flow assumptions   0 (163)
Effect of actual variances from expected experience   (29) (2)
Adjusted beginning of period balance   4,213 4,175
Issuances 204 488  
Interest accrual 44 177  
Net premiums collected [1] (143) (590)  
Foreign currency translation 0 0  
Other 0 (8)  
Ending balance at original discount rate 4,318 4,242  
Effect of changes in discount rate assumptions (360) (297)  
Ending balance 3,958 3,945  
Present value of expected future policy benefits:      
Beginning balance 10,845 10,701  
Beginning balance at original discount rate 11,812 12,013  
Effect of changes in cash flow assumptions   0 (219)
Effect of actual variances from expected experience   (41) (15)
Adjusted beginning of period balance   11,771 11,779
Issuances 215 503  
Interest accrual 127 515  
Benefit payments (247) (985)  
Foreign currency translation 0 0  
Other 0 0  
Ending balance at original discount rate 11,866 11,812  
Effect of changes in discount rate assumptions (1,176) (967)  
Ending balance 10,690 10,845  
Net liability for future policy benefits 6,732 6,900  
Less: reinsurance recoverable 0 0  
Net liability for future policy benefits after reinsurance recoverable 6,732 6,900  
Aflac U.S. | Hospital indemnity      
Present value of expected future net premiums:      
Beginning balance 1,171 1,122  
Beginning balance at original discount rate 1,231 1,221  
Effect of changes in cash flow assumptions   0 (8)
Effect of actual variances from expected experience   (14) 16
Adjusted beginning of period balance   1,217 1,229
Issuances 90 211  
Interest accrual 12 50  
Net premiums collected [1] (61) (255)  
Foreign currency translation 0 0  
Other 0 (4)  
Ending balance at original discount rate 1,258 1,231  
Effect of changes in discount rate assumptions (75) (60)  
Ending balance 1,183 1,171  
Present value of expected future policy benefits:      
Beginning balance 1,955 1,897  
Beginning balance at original discount rate 2,071 2,073  
Effect of changes in cash flow assumptions   0 (4)
Effect of actual variances from expected experience   (19) 8
Adjusted beginning of period balance   2,052 2,077
Issuances 95 217  
Interest accrual 22 87  
Benefit payments (77) (310)  
Foreign currency translation 0 0  
Other 0 0  
Ending balance at original discount rate 2,092 2,071  
Effect of changes in discount rate assumptions (146) (116)  
Ending balance 1,946 1,955  
Net liability for future policy benefits 763 784  
Less: reinsurance recoverable 0 0  
Net liability for future policy benefits after reinsurance recoverable 763 784  
Aflac U.S. | Dental/vision      
Present value of expected future net premiums:      
Beginning balance 202 196  
Beginning balance at original discount rate 208 209  
Effect of changes in cash flow assumptions   0 (10)
Effect of actual variances from expected experience   (2) (10)
Adjusted beginning of period balance   206 189
Issuances 13 50  
Interest accrual 2 9  
Net premiums collected [1] (10) (39)  
Foreign currency translation 0 0  
Other 0 (1)  
Ending balance at original discount rate 211 208  
Effect of changes in discount rate assumptions (9) (6)  
Ending balance 202 202  
Present value of expected future policy benefits:      
Beginning balance 438 441  
Beginning balance at original discount rate 458 477  
Effect of changes in cash flow assumptions   0 (15)
Effect of actual variances from expected experience   (1) (13)
Adjusted beginning of period balance   457 449
Issuances 14 50  
Interest accrual 5 20  
Benefit payments (15) (61)  
Foreign currency translation 0 0  
Other 0 0  
Ending balance at original discount rate 461 458  
Effect of changes in discount rate assumptions (27) (20)  
Ending balance 434 438  
Net liability for future policy benefits 232 236  
Less: reinsurance recoverable 0 0  
Net liability for future policy benefits after reinsurance recoverable 232 236  
Aflac U.S. | Other      
Present value of expected future net premiums:      
Beginning balance 1,968 826  
Beginning balance at original discount rate 1,835 824  
Effect of changes in cash flow assumptions   0 386
Effect of actual variances from expected experience   (16) 146
Adjusted beginning of period balance   1,819 1,356
Issuances 469 571  
Interest accrual 27 73  
Net premiums collected [1] (50) (138)  
Foreign currency translation 0 0  
Other 0 (27)  
Ending balance at original discount rate 2,265 1,835  
Effect of changes in discount rate assumptions 65 133  
Ending balance 2,330 1,968  
Present value of expected future policy benefits:      
Beginning balance 2,444 1,288  
Beginning balance at original discount rate 2,304 1,293  
Effect of changes in cash flow assumptions   0 399
Effect of actual variances from expected experience   (14) 148
Adjusted beginning of period balance   2,290 $ 1,840
Issuances 474 574  
Interest accrual 33 97  
Benefit payments (56) (207)  
Foreign currency translation 0 0  
Other 0 0  
Ending balance at original discount rate 2,741 2,304  
Effect of changes in discount rate assumptions 63 140  
Ending balance 2,804 2,444  
Net liability for future policy benefits 474 476  
Less: reinsurance recoverable 20 11  
Net liability for future policy benefits after reinsurance recoverable $ 454 $ 465  
[1] Net premiums collected represent the portion of gross premiums collected from policyholders that is used to fund expected future benefit payments.