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INCOME TAXES - Income Tax Effects of Temporary Differences that Gave Rise to Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred income tax liabilities: |  |
Deferred policy acquisition costs | $ 2,637 | $ 2,883
Unrealized gains and other basis differences on investments | 615 | 988
Foreign currency gain on Aflac Japan | 1 | 2
Premiums receivable | 43 | 85
Policy benefit reserves | 2,509 | 110
Other | 54 | 0
Total deferred income tax liabilities | 5,859 | 4,068
Deferred income tax assets: |  |
Unfunded retirement benefits | 4 | 5
Other accrued expenses | 32 | 28
Policy and contract claims | 514 | 572
Deferred compensation | 31 | 45
Depreciation | 255 | 265
Anticipatory foreign tax credit | 3,262 | 2,210
Deferred foreign tax credit and carryforward | 1,428 | 1,077
Other | 0 | 135
Total deferred income tax assets | 5,526 | 4,337
Net deferred tax asset |  | (269)
Net deferred tax liability | 333 |
Current income tax liability | 240 | 423
Total income tax liability | $ 573 | $ 154

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