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Research and Development	9 Months Ended
Research and Development	May 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Research and Development	Research and Development We share the cost of certain product and process development activities with development partners. Our R&D expenses were reduced by reimbursements under these arrangements of $53 million and $167 million for the third quarter and first nine months of 2018, respectively, and $47 million and $162 million for the third quarter and first nine months of 2017, respectively.