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Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Jan. 02, 2018
Mar. 31, 2017
Feb. 16, 2017
Feb. 01, 2017
Jan. 03, 2017
Jan. 31, 2018
Jan. 31, 2017
Oct. 31, 2017
Business Acquisition [Line Items]                
Acquisition of businesses, net of cash acquired           $ 43,284 $ 14,000  
Goodwill           1,622,125   $ 1,589,210
Term loan facility           1,585,430    
Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Goodwill           $ 1,198,211   $ 1,172,857
Sonoscan, Inc. [Member] | 2018 Acquisition [Member]                
Business Acquisition [Line Items]                
Acquired percent of the outstanding shares 100.00%              
Acquisition of businesses, net of cash acquired $ 44,032              
Cash acquired from business acquisition 748              
Goodwill 20,078              
Identifiable intangible assets 7,900              
Sonoscan, Inc. [Member] | Customer Relationships [Member] | 2018 Acquisition [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets $ 1,700              
Intangible assets amortization period 7 years              
Sonoscan, Inc. [Member] | Trade Names [Member] | 2018 Acquisition [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets $ 3,300              
Intangible assets amortization period 11 years              
Sonoscan, Inc. [Member] | Technology-Based Intangible Assets [Member] | 2018 Acquisition [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets $ 2,500              
Intangible assets amortization period 7 years              
Sonoscan, Inc. [Member] | Non-compete Agreements [Member] | 2018 Acquisition [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets $ 400              
Intangible assets amortization period 5 years              
Vention [Member] | 2017 Acquisition [Member] | Term Loan Facility [Member]                
Business Acquisition [Line Items]                
Term loan facility   $ 705,000            
Term loan facility due in October 2018   200,000            
Term loan facility due in March 2020   200,000            
Term loan facility due in March 2022   305,000            
Weighted average interest rate for borrowings           2.66%    
Vention [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Acquisition of businesses, net of cash acquired   705,000            
Cash acquired from business acquisition   3,313            
Goodwill   434,625            
Identifiable intangible assets   286,000            
Acquisition of businesses, Cash and other closing adjustments   10,726            
Business combination, goodwill, tax deductible amount   37,200            
Business acquisition purchase price allocation adjustments           $ 0    
Vention [Member] | Customer Relationships [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets   $ 240,000            
Intangible assets amortization period   14 years            
Vention [Member] | Trade Names [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets   $ 2,000            
Intangible assets amortization period   6 years            
Vention [Member] | Technology-Based Intangible Assets [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets   $ 44,000            
Vention [Member] | Technology-Based Intangible Assets Amortized over 14 Years [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets   $ 36,000            
Intangible assets amortization period   14 years            
Vention [Member] | Technology-Based Intangible Assets Amortized over 10 Years [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets   $ 8,000            
Intangible assets amortization period   10 years            
InterSelect GmbH [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Acquired percent of the outstanding shares     100.00%          
Cash acquired from business acquisition     $ 492          
Goodwill     3,548          
Identifiable intangible assets     1,879          
Acquisition of businesses, net of cash acquired     5,432          
InterSelect GmbH [Member] | Customer Relationships [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets     $ 1,109          
Intangible assets amortization period     9 years          
InterSelect GmbH [Member] | Trade Names [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets     $ 348          
Intangible assets amortization period     12 years          
InterSelect GmbH [Member] | Technology-Based Intangible Assets [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets     $ 422          
Intangible assets amortization period     9 years          
Plas-Pak Industries, Inc. [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Acquired percent of the outstanding shares       100.00%        
Acquisition of businesses, net of cash acquired       $ 70,798        
Cash acquired from business acquisition       543        
Goodwill       24,995        
Identifiable intangible assets       33,800        
Plas-Pak Industries, Inc. [Member] | Customer Relationships [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets       $ 23,700        
Intangible assets amortization period       17 years        
Plas-Pak Industries, Inc. [Member] | Trade Names [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets       $ 4,100        
Intangible assets amortization period       12 years        
Plas-Pak Industries, Inc. [Member] | Technology-Based Intangible Assets [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets       $ 5,000        
Intangible assets amortization period       9 years        
Plas-Pak Industries, Inc. [Member] | Non-compete Agreements [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets       $ 1,000        
Intangible assets amortization period       5 years        
ACE Production Technologies Inc [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Goodwill         $ 6,383      
Identifiable intangible assets         5,010      
Acquisition of businesses, net of cash acquired         13,761      
ACE Production Technologies Inc [Member] | Customer Relationships [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets         $ 2,800      
Intangible assets amortization period         7 years      
ACE Production Technologies Inc [Member] | Trade Names [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets         $ 1,000      
Intangible assets amortization period         11 years      
ACE Production Technologies Inc [Member] | Technology-Based Intangible Assets [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets         $ 1,100      
Intangible assets amortization period         7 years      
ACE Production Technologies Inc [Member] | Non-compete Agreements [Member] | 2017 Acquisition [Member] | Advanced Technology Systems [Member]                
Business Acquisition [Line Items]                
Identifiable intangible assets         $ 110      
Intangible assets amortization period         3 years