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Segment, Customers, and Geographic Information - Net Revenue within Geographic Areas Based on Customers' Locations (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Dec. 25, 2021
Dec. 26, 2020
Dec. 25, 2021
Dec. 26, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net revenue $ 420.5 $ 357.6 $ 793.2 $ 686.0
China [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net revenue 142.1 144.1 277.2 275.3
Taiwan [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net revenue 127.6 94.8 247.1 166.6
Japan [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net revenue 119.5 88.3 211.1 191.4
Other [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net revenue 16.8 22.0 33.3 38.0
South Korea [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net revenue 10.7 6.5 18.9 11.5
United States [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net revenue $ 3.8 $ 1.9 $ 5.6 $ 3.2