v3.7.0.1
Employee Benefit And Retirement Plans-Additional Information (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
May 31, 2017
May 31, 2016
Nov. 30, 2015
Compensation and Retirement Disclosure [Abstract]      
Pension Contributions $ 8.5 $ 9.6 $ 25.1