OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has assigned a Long-Term Issue Credit Rating of “a-” to Aflac Incorporated’s (Aflac) (Columbus, GA) (NYSE:AFL) recently priced yen-denominated 10-year, 0.932% senior unsecured notes totaling JPY 60 billion (USD 520 million). The outlook assigned to the Credit Rating (rating) is stable. Aflac’s existing Long-Term Issuer Credit Ratings remain unchanged. A.M. Best anticipates the proceeds from the sale of the notes to be utilized for general corporate purp