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Goodwill And Intangible Assets (Schedule Of Carrying Value And Accumulated Amortization For Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,033.7	$ 1,036.0
Accumulated Amortization	(525.8)	(458.6)
Net	507.9	577.4
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	698.9	701.3
Accumulated Amortization	(322.1)	(275.3)
Net	376.8	426.0
Technology Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	181.5	181.5
Accumulated Amortization	(88.9)	(78.2)
Net	92.6	103.3
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	153.3	153.2
Accumulated Amortization	(114.8)	(105.1)
Net	$ 38.5	$ 48.1

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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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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