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Warranties (Tables)
 3 Months Ended
Dec. 31, 2016
Product Warranties Disclosures [Abstract]  
Schedule of changes in warranty liability
Changes in the Company’s warranty liability and unearned extended warranty premiums were as follows (in millions):
 
Three Months Ended 
 December 31,
 
2016
 
2015
Balance at beginning of period
$
89.6

 
$
92.1

Warranty provisions
10.7

 
10.0

Settlements made
(11.9
)
 
(13.9
)
Changes in liability for pre-existing warranties, net
(1.1
)
 
(0.6
)
Premiums received
2.8

 
2.6

Amortization of premiums received
(2.9
)
 
(2.6
)
Foreign currency translation
(1.0
)
 
(0.5
)
Balance at end of period
$
86.2

 
$
87.1