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Business Combinations - Summary of Preliminary Fair Values of Assets Acquired and Liabilities Assumed at Date of Acquisition (Detail) - USD ($)
$ in Millions
Apr. 15, 2019
Jun. 26, 2020
Dec. 27, 2019
Business Acquisition [Line Items]      
Goodwill   $ 171.1 $ 171.1
Dynamic Manufacturing Solutions [Member]      
Business Acquisition [Line Items]      
Accounts receivable $ 1.5    
Inventories 8.9    
Equipment and leasehold improvements 5.4    
Goodwill 12.3    
Purchased intangible assets 6.9    
Other non-current assets 0.3    
Total assets acquired 35.3    
Accounts payable (3.8)    
Other liabilities (0.1)    
Total liabilities assumed (3.9)    
Purchase consideration transferred $ 31.4