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Leases - Additional Information (Detail)
$ in Thousands
 3 Months Ended 9 Months Ended
Nov. 01, 2019
USD ($)
Facility
Jan. 31, 2020
USD ($)
Facility
Jan. 31, 2020
USD ($)
Lessee Lease Description [Line Items]      
Lessee operating lease, existence of option to extend [true/false]     true
Lessee operating lease, existence of option to terminate [true/false]     true
Operating lease right-of-use assets, net   $ 209,236 $ 209,236
Lease liability   247,801 247,801
ROU assets, impairment charge   $ 2,282 2,282
Acquired Companies      
Lessee Lease Description [Line Items]      
Operating lease right-of-use assets, net $ 3,200    
Lease liability 6,700    
ROU asset adjusted by reclassification of pre-existing prepaid expenses, restructuring liabilities and deferred rent $ 3,500    
Number of office leases closed | Facility 16 16  
ROU assets, impairment charge $ 2,300 $ 2,300 $ 2,300
Minimum      
Lessee Lease Description [Line Items]      
Lessee operating lease, term of contract   1 year 1 year
Lessee finance lease, term of contract   1 year 1 year
Maximum      
Lessee Lease Description [Line Items]      
Lessee operating lease, term of contract   11 years 11 years
Lessee finance lease, term of contract   5 years 5 years