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Commitments and Contingencies (Tables)
 6 Months Ended
Dec. 28, 2019
Commitments and Contingencies Disclosure [Abstract]  
Schedule of changes in the entity's warranty reserve
The following table presents the changes in the Company’s warranty reserve during the three and six months ended December 28, 2019 and December 29, 2018, (in millions):
 
Three Months Ended
 
Six Months Ended
 
December 28, 2019
 
December 29, 2018
 
December 28, 2019
 
December 29, 2018
Balance as of beginning of period
$
8.8

 
$
9.0

 
$
8.7

 
$
8.2

Provision for warranty
0.9

 
1.0

 
1.3

 
1.4

Utilization of reserve
(0.8
)
 
(1.5
)
 
(1.8
)
 
(2.7
)
Adjustments related to pre-existing warranties (including changes in estimates)
0.3

 
0.7

 
1.0

 
2.3

Balance as of end of period
$
9.2


$
9.2

 
$
9.2

 
$
9.2