0001042046 2026-05-20 2026-05-20 0001042046 afg:Five875SubordinatedDebenturesDueMarch302059Member 2026-05-20 2026-05-20 0001042046 afg:Five125SubordinatedDebenturesDueDecember152059Member 2026-05-20 2026-05-20 0001042046 afg:Five625SubordinatedDebenturesDueJune12060Member 2026-05-20 2026-05-20 0001042046 us-gaap:CommonStockMember 2026-05-20 2026-05-20 0001042046 afg:Four5SubordinatedDebenturesDueSeptember152060Member 2026-05-20 2026-05-20 false 0001042046 8-K 2026-05-20 AMERICAN FINANCIAL GROUP, INC. OH 1-13653 31-1544320 301 East Fourth Street Cincinnati OH 45202 513 579-2121 false false false false false Common Stock AFG NYSE 5.875% Subordinated Debentures due March 30, 2059 AFGB NYSE 5.125% Subordinated Debentures due December 15, 2059 AFGC NYSE 5.625% Subordinated Debentures due June 1, 2060 AFGD NYSE 4.5% Subordinated Debentures due September 15, 2060 AFGE NYSE