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Goodwill and Other Intangible Assets (Tables)
9 Months Ended
Apr. 03, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of changes in goodwill
The following table presents our goodwill balance by the reportable segments as of April 3, 2021 and June 27, 2020 (in millions):
Optical CommunicationsCommercial LasersTotal
Balance as of April 3, 2021 and June 27, 2020$363.5 $5.4 $368.9 
Acquired developed technology and other intangibles
The following tables present details of our other intangibles as of the periods presented (in millions, except for weighted average remaining amortization period):
April 3, 2021Gross Carrying AmountsAccumulated AmortizationNet Carrying AmountsWeighted average remaining amortization period (years)
Acquired developed technologies$390.3 $(222.3)$168.0 3.2
Customer relationships 145.0 (49.8)95.2 5.7
Order backlog22.0 (22.0)— 
Other intangibles2.7 (2.7)— 
Total intangible assets$560.0 $(296.8)$263.2 
June 27, 2020Gross Carrying AmountsAccumulated AmortizationNet Carrying AmountsWeighted average remaining amortization period (years)
Acquired developed technologies$371.5 $(176.9)$194.6 3.7
Customer relationships 149.3 (37.1)112.2 6.5
In-process research and development10.0 — 10.0 n/a
Order backlog22.0 (22.0)— 
Other intangibles2.7 (2.7)— 
Total intangible assets $555.5 $(238.7)$316.8 
Details of amortization expense
The following table presents details of amortization for the periods presented (in millions):
Three Months EndedNine Months Ended
April 3, 2021March 28, 2020April 3, 2021March 28, 2020
Cost of sales$15.8 $13.9 $45.8 $38.8 
Selling, general and administrative6.2 6.1 17.8 18.6 
Total amortization of intangibles$22.0 $20.0 $63.6 $57.4 
Estimated future amortization expense
Based on the carrying amount of our acquired developed technologies and other intangibles as of April 3, 2021, and assuming no future impairment of the underlying assets, the estimated future amortization is as follows (in millions):
Fiscal Years
Remainder of 2021$22.0 
202285.4 
202361.9 
202440.5 
202527.7 
Thereafter25.7 
Total future amortization$263.2