Other Intangible Assets and Goodwill (Indefinite-Lived Intangible Assets) (Details) - USD ($)
$ in Millions

6 Months Ended

Mar. 31, 2019

Apr. 01, 2018

Sep. 30, 2018

Indefinite-lived Intangible Assets [Line Items]

Goodwill impairments

$ (5.4)

$ (28.5)

Indefinite-lived Intangible Assets (Excluding Goodwill)

$ 205.0

$ 231.0

Schedule of Indefinite-Lived Intangible Assets [Table Text Block]

(in millions)	Mar 31, 2019		Sep 30, 2018
Trade names, trademarks and patents	$	205.0	$	215.9
Other indefinite-lived intangible assets	—		15.1
Total indefinite-lived intangible assets	$	205.0	$	231.0

Trade Names, Trademarks and Patents [Member]

Indefinite-lived Intangible Assets [Line Items]

Indefinite-lived Intangible Assets (Excluding Goodwill)

$ 205.0

215.9

Other Intangible Assets [Member]

Indefinite-lived Intangible Assets [Line Items]

Indefinite-lived Intangible Assets (Excluding Goodwill)

0.0

$ 15.1

Americas Segment [Member]

Indefinite-lived Intangible Assets [Line Items]

Goodwill impairments

0.0

China / Asia Pacific Segment [Member]

Indefinite-lived Intangible Assets [Line Items]

Goodwill impairments

0.0

EMEA Segment [Member]

Indefinite-lived Intangible Assets [Line Items]

Goodwill impairments

0.0

Channel Development [Member]

Indefinite-lived Intangible Assets [Line Items]

Goodwill impairments

0.0

Corporate and Other [Member]

Indefinite-lived Intangible Assets [Line Items]

Goodwill impairments

$ (5.4)