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Other Income (Expense)
 12 Months Ended
Sep. 30, 2016
Other Income and Expenses [Abstract]  
Other Income (Expense)
Other Income (Expense)
The components of other income (expense) are (in millions):
 
 
2016
 
2015
 
2014
Interest income
 
$
12.7

 
$
10.7

 
$
9.5

Royalty income
 
2.9

 
2.9

 
2.5

Legacy product liability and environmental charges
 
(12.7
)
 
(19.8
)
 
(14.6
)
Other
 
3.4

 
0.7

 
12.3

Other income (expense)
 
$
6.3

 
$
(5.5
)
 
$
9.7


Other income (expense) included an $8.0 million gain in 2014 from favorable resolutions of certain intellectual property and commercial legal matters.