Goodwill And Intangible Assets (Schedule Of Range And Weighted Average Useful Lives For Definite-Lived Intangible Assets) (Details)	6 Months Ended
	Mar. 31, 2019
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average	18 years 6 months
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	5 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	12 years 1 month 6 days
Technology Assets [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	5 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	11 years 10 months 24 days
Tradenames [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	6 years
Tradenames [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Range	12 years