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Operating Segments and Geographic Information - Schedule of Information on Reportable Segments (Details) - USD ($)
$ in Millions
3 Months Ended
Oct. 02, 2021
Sep. 26, 2020
Information on reportable segments    
Net revenue $ 448.4 $ 452.4
Gross profit: 232.2 205.7
Stock-based compensation (24.8) (19.5)
Amortization of acquired intangibles (21.4) (20.7)
Operating segments    
Information on reportable segments    
Net revenue 448.4 452.4
Gross profit: 246.7 235.2
Operating segments | OpComms    
Information on reportable segments    
Net revenue 406.0 428.5
Gross profit: 225.9 224.8
Operating segments | Lasers    
Information on reportable segments    
Net revenue 42.4 23.9
Gross profit: 20.8 10.4
Unallocated corporate items:    
Information on reportable segments    
Stock-based compensation (4.6) (3.7)
Amortization of acquired intangibles (15.8) (15.0)
Inventory and fixed asset write down due to product line exits 0.0 (0.3)
Other charges 5.9 (10.5)
Inventory write down charge $ 0.0 0.3
Unallocated corporate items: | Huawei    
Information on reportable segments    
Inventory and fixed asset write down due to product line exits   (5.9)
Product transfer costs   2.1
Inventory write down charge   $ 5.9