Summary of Significant Accounting Policies (Nature of Operations) (Details)	12 Months Ended
	Sep. 30, 2019 segment
Number of reportable business segments	3
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	20 years
Computer Software, Intangible Asset [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Computer Software, Intangible Asset [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	5 years