Deferred Revenue and Performance Obligations - Remaining Performance Obligation (Detail) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-06-01	May 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage	60.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months