Annual report pursuant to Section 13 and 15(d)

Related Parties (Narrative) (Details)

v3.10.0.1
Related Parties (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
May 31, 2018
May 31, 2017
May 31, 2016
EMC Corporation [Member]      
Related Party Transaction [Line Items]      
Purchases from related parties $ 0.5 $ 0.6 $ 4.9
Staples, Inc. [Member]      
Related Party Transaction [Line Items]      
Purchases from related parties $ 2.7 $ 2.9 $ 2.3