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Summary of Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Feb. 01, 2017
USD ($)
Sep. 30, 2018
Significant Accounting Policies [Line Items]    
Number of Countries in which Entity Operates (more than)   200
Number of reportable segments   1
Indefinite-lived intangible impairment $ 0  
Goodwill, impairment loss $ 0  
Domestic    
Significant Accounting Policies [Line Items]    
Expected average employee future service period (in years)   9 years
Non-U.S. Plans    
Significant Accounting Policies [Line Items]    
Expected average employee future service period (in years)   11 years
Minimum    
Significant Accounting Policies [Line Items]    
Acquired long-lived intangible assets useful life   3 years
Maximum    
Significant Accounting Policies [Line Items]    
Acquired long-lived intangible assets useful life   15 years
Furniture and Fixtures | Minimum    
Significant Accounting Policies [Line Items]    
Estimated useful life   2 years
Furniture and Fixtures | Maximum    
Significant Accounting Policies [Line Items]    
Estimated useful life   10 years
Building Improvements | Minimum    
Significant Accounting Policies [Line Items]    
Estimated useful life   3 years
Building Improvements | Maximum    
Significant Accounting Policies [Line Items]    
Estimated useful life   40 years
Building    
Significant Accounting Policies [Line Items]    
Estimated useful life   40 years