XML 56 R45.htm IDEA: XBRL DOCUMENT v3.8.0.1
Employee Benefit Plans - Narrative (Details) - Pension Plans - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Feb. 14, 2018
Feb. 28, 2018
Feb. 28, 2017
Feb. 28, 2018
Feb. 28, 2017
United States          
Employee Benefit Plans (Details) [Line Items]          
Pension contributions       $ 0.0  
Lump sum benefit payments made       37.8  
Group annuity contracts acquired to settle benefit obligation $ 86.3        
Benefit cost of settlement event   $ (39.6) $ 0.0 (55.0) $ 0.0
Net funded asset position   2.3   2.3  
Plan asset   3.6   3.6  
Annuity benefit payments to be made   1.3   1.3  
United Kingdom          
Employee Benefit Plans (Details) [Line Items]          
Pension contributions       0.8  
Contributions expected in current fiscal year   1.1   1.1  
Benefit cost of settlement event   $ 0.0 $ 0.0 $ 0.0 $ 0.0