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Other Intangible Assets and Goodwill (Changes in Carrying Amount of Goodwill By Reportable Operating Segment) (Tables) $ in Millions | 6 Months Ended
--- | ---
Mar. 31, 2019 USD ($)
Goodwill [Line Items] |
Goodwill, beginning balance | $ 3,541.6
Other | 67.3
Goodwill, ending balance | $ 3,603.5
Schedule of Goodwill [Table Text Block] |
| Americas |  | China/Asia Pacific |  | EMEA |  | Channel Development |  | Corporate and Other |  | Total
Goodwill balance at September 30, 2018 | $ | 497.4 |  |  | $ | 2,986.6 |  |  | $ | 11.3 |  |  | $ | 34.7 |  |  | $ | 11.6 |  |  | $ | 3,541.6 |
Impairment | — |  |  | — |  |  | — |  |  | — |  |  | (5.4 | ) |  | (5.4 | )
Other | (0.9 | ) |  | 68.1 |  |  | — |  |  | — |  |  | 0.1 |  |  | 67.3 |
Goodwill balance at March 31, 2019 | $ | 496.5 |  |  | $ | 3,054.7 |  |  | $ | 11.3 |  |  | $ | 34.7 |  |  | $ | 6.3 |  |  | $ | 3,603.5 |
Americas Segment [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | $ 497.4
Other | (0.9)
Goodwill, ending balance | 496.5
China / Asia Pacific Segment [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 2,986.6
Other | 68.1
Goodwill, ending balance | 3,054.7
EMEA Segment [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 11.3
Other | 0.0
Goodwill, ending balance | 11.3
Channel Development [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 34.7
Other | 0.0
Goodwill, ending balance | 34.7
Corporate and Other [Member] |
Goodwill [Line Items] |
Goodwill, beginning balance | 11.6
Other | 0.1
Goodwill, ending balance | $ 6.3

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