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REVENUES FROM CONTRACT WITH CUSTOMERS - Remaining Unsatisfied Performance Obligations (Details)
$ in Millions
Jan. 31, 2021
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Contract backlog amount $ 552.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-02-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Contract backlog (as percent) 64.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 12 months