NEW YORK (S&P Global Ratings) Sept. 11, 2018--S&P Global Ratings today assigned its 'AA-' issue-level rating to 3M Co.'s proposed $2.25 billion (in aggregate) medium-term notes, which the company will issue in various tranches. 3M will use the proceeds from these notes to fund the upcoming maturity of its €500 million medium-term notes due November 2018 and for general corporate purposes, which could include repaying the borrowings under its commercial paper program. All of our other ratings on the company remain unchanged. For our complete issuer credit rating rationale, please see our most recent full analysis on 3M Co., published June 29, 2018, on RatingsDirect. RELATED CRITERIA ARCHIVE - Criteria - Corporates - General: Reflecting Subordination Risk In Corporate Issue