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Goodwill And Intangible Assets (Schedule Of Carrying Value And Accumulated Amortization For Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 869.0	$ 884.8
Accumulated Amortization	(340.0)	(297.1)
Net	529.0	587.7
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	668.5	671.7
Accumulated Amortization	(259.1)	(222.3)
Net	409.4	449.4
Technology Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	194.7	194.6
Accumulated Amortization	(77.6)	(59.7)
Net	117.1	134.9
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5.8	18.5
Accumulated Amortization	(3.3)	(15.1)
Net	$ 2.5	$ 3.4

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 2
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