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Revenues - Remaining Performance Obligations Narrative (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-05-01
$ in Millions
Apr. 30, 2021
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Revenue, remaining performance obligation, amount $ 282.4
Revenue, remaining performance obligation, percentage 70.00%
Revenue, remaining performance obligation, period 12 months