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Warranty (Tables)
 9 Months Ended
Apr. 30, 2017
Standard Product Warranty Disclosure [Abstract]  
Reconciliation Of Warranty Reserves
Following is a reconciliation of warranty reserves for the nine months ended April 30, 2017 and 2016 (in millions):
 
Nine Months Ended
April 30,
 
2017
 
2016
Beginning balance
$
11.9

 
$
8.6

Accruals for warranties issued during the reporting period
2.5

 
2.9

Accruals related to pre-existing warranties (including changes in estimates)
4.1

 
2.9

Less settlements made during the period
(3.0
)
 
(2.6
)
Ending balance
$
15.5

 
$
11.8