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Supplemental Statement of Operations Information (Tables)
 12 Months Ended
Sep. 30, 2018
Supplemental Income Statement Elements [Abstract]  
Schedule of Operations, Supplemental Disclosures [Table Text Block] Selected supplemental statement of operations information is presented below.
 
2018
 
2017
 
2016
 
(in millions)
Included in selling, general and administrative expenses:
 
 
 
 
 
Research and development
$
11.6

 
$
12.1

 
$
9.9

Advertising
$
7.1

 
$
5.2

 
$
4.0

Interest expense, net:
 
 
 
 
 
Term Loan
$
14.4

 
$
19.1

 
$
20.5

Deferred financing costs amortization
1.6

 
1.8

 
1.9

ABL Agreement
0.6

 
0.8

 
1.1

Interest rate swap contracts
0.6

 
1.9

 
—

5.5% Senior Notes
7.5

 
—

 
—

Other interest expense
0.6

 
0.6

 
0.5

 
25.3

 
24.2

 
24.0

Interest income
(4.4
)
 
(2.0
)
 
(0.4
)
 
$
20.9

 
$
22.2

 
$
23.6