NEW YORK (S&P Global Ratings) Oct. 30, 2017--S&P Global Ratings today assigned its 'A-' issue-level rating to U.S.-based waste services company Waste Management Inc.'s proposed $750 million senior unsecured notes due 2027. Waste Management intends to use the net proceeds from this offering to repay its 6.1% $600 million ($590 million outstanding) bonds maturing in March 2018 and will use the remaining balance to repay its commercial paper borrowings. All of our other ratings on Waste Management are unchanged. For our complete corporate credit rating rationale, please see our most recent research update on Waste Management, published Feb. 1, 2017, on RatingsDirect. RELATED CRITERIA General Criteria: Methodology For Linking Long-Term And Short-Term Ratings , April 7, 2017 General Criteria: Guarantee