XML 15 R55.htm IDEA: XBRL DOCUMENT v3.19.2
Employee Benefit Plans - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 31, 2019
Nov. 30, 2018
Aug. 31, 2018
Pension Plans | United Kingdom      
Employee Benefit Plans (Details) [Line Items]      
Pension contributions $ 0.3    
Contributions expected in current fiscal year $ 1.1    
Post-Retirement Benefits      
Employee Benefit Plans (Details) [Line Items]      
Reduction in benefit obligation   $ 2.7  
Reduction in AOCI     $ 2.7
Average remaining life expectancy 3 years 2 months 12 days