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Supplemental Statement of Operations Information (Tables) | 12 Months Ended
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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 |

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