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Goodwill and Other Intangible Assets - Schedule of Changes in Goodwill (Details) - USD ($)
$ in Millions
Jan. 01, 2022
Jul. 03, 2021
Changes in goodwill    
Goodwill $ 368.9 $ 368.9
Optical Communications    
Changes in goodwill    
Goodwill 363.5 363.5
Commercial Lasers    
Changes in goodwill    
Goodwill $ 5.4 $ 5.4