INVESTMENTS - Equity Securities (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Equity Securities, FV-NI [Line Items]
Equity securities	$ 851	$ 887
Yen-denominated
Equity Securities, FV-NI [Line Items]
Equity securities	618	609
U.S. dollar-denominated
Equity Securities, FV-NI [Line Items]
Equity securities	$ 233	$ 278

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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+ Details

AFLAC INC 10-Q