...NEW YORK (S&P Global Ratings) Aug. 19, 2019--S&P Global Ratings today assigned its '##-' issue-level rating to 3M Co.'s proposed $3 billion (in aggregate) senior unsecured notes. Subject to investor demand, the notes may be upsized to $3.25 billion. The company will issue the debt in various tranches due in 2023, 2025, 2029, and 2049. 3M will use the proceeds to fund a portion of the previously announced acquisition of Acelity (expected to close in the fourth quarter of 2019). We revised the rating outlook on 3M to negative from stable after the announcement as we believe it will stretch credit measures over the next 1-2 years. For additional information on the ratings, see our most recent research update on 3M, published May 2, 2019. RELATED CRITERIA + Criteria | Corporates | General: Corporate Methodology: Ratios And Adjustments, April 1, 2019 + Criteria | Corporates | General: Reflecting Subordination Risk In Corporate Issue Ratings, March 28, 2018 + General Criteria: Methodology For...