Summary of Significant Accounting Policies (Identifiable Intangible Assets) (Details)	12 Months Ended
Sep. 30, 2021
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	14 years 6 months

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration