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Warranty (Tables)
 3 Months Ended
Oct. 31, 2016
Standard Product Warranty Disclosure [Abstract]  
Reconciliation Of Warranty Reserves
Following is a reconciliation of warranty reserves for the three months ended October 31, 2016 and 2015 (in millions):
 
Three Months Ended
October 31,
 
2016
 
2015
Beginning balance
$
11.9

 
$
8.6

Accruals for warranties issued during the reporting period
0.7

 
1.3

Accruals related to pre-existing warranties (including changes in estimates)
3.8

 
2.2

Less settlements made during the period
(1.0
)
 
(0.5
)
Ending balance
$
15.4

 
$
11.6