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Capital Stock and Stock-Based Awards (Details) - Schedule of stock option activity for the Class A Stock and Common Stock plans
$ / shares in Units, $ in Millions
 12 Months Ended
May 31, 2019
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Outstanding (shares) at May 31, 2015 | shares 2,822,126
Granted (Shares) | shares 358,369
Exercised (Shares) | shares (214,273)
Expired, cancellations and forfeitures (Shares) | shares (24,093)
Outstanding (Shares) at May 31, 2016 | shares 2,942,129
Exercisable (Shares) at May 31, 2016 | shares 1,799,534
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]  
Outstanding at May 31, 2015 (in Dollars per share) | $ / shares $ 35.52
Granted (in Dollars per share) | $ / shares 42.77
Exercised (in Dollars per share) | $ / shares 31.87
Expired, cancellations and forfeitures (in Dollars per share) | $ / shares 42.02
Outstanding at May 31, 2016 (in Dollars per share) | $ / shares 36.62
Weighted Average Exercise Price, Exercisable at May 31, 2014 (in Dollars per share) | $ / shares $ 34.14
Average Remaining Contractual Term (in years), Outstanding at May 31, 2016 6 years 3 months 15 days
Average Remaining Contractual Term (in years), Exercisable at May 31, 2016 5 years 11 days
Aggregate Intrinsic Value, Outstanding at May 31, 2016 (in Dollars) | $ $ 3.6
Aggregate Intrinsic Value, Exercisable at May 31, 2016 (in Dollars) | $ $ 3.6