Goodwill And Intangible Assets (Schedule Of Range And Weighted Average Useful Lives For Definite-Lived Intangible Assets) (Details)	9 Months Ended
	Jun. 30, 2018
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average	17 years 10 months 24 days
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	2 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	20 years
Technology Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average	11 years 4 months 24 days
Technology Assets [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	6 years
Technology Assets [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	18 years
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average	6 years 2 months 12 days
Tradenames [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	5 years
Tradenames [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	13 years