Annual report pursuant to Section 13 and 15(d)

Service Revenue (Narrative) (Performance Obligation) (Details)

v3.22.2
Service Revenue (Narrative) (Performance Obligation) (Details)
$ in Millions
May 31, 2022
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-06-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Deferred revenue, performance obligations $ 22.1
Deferred revenue, timing of satisfaction 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-06-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Deferred revenue, performance obligations $ 26.8
Deferred revenue, timing of satisfaction