Acquisitions and Divestitures (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Jan. 31, 2020	Aug. 31, 2022	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2022	Sep. 30, 2021
Business Acquisition [Line Items]
Goodwill			$ 808,252		$ 772,559	$ 805,333
Future amortization expense associated with the acquired intangibles					403,742
Impairment of assets sold			37,902
Promissory note, due date	Apr. 30, 2022
Disposal Groups [Member]
Business Acquisition [Line Items]
Non-cash impairment charge			22,900
Impairment of assets sold			$ 37,902
Disposal Groups [Member] | AURELIUS Group [Member]
Business Acquisition [Line Items]
Purchase price	$ 23,400
Promissory note	$ 6,000
Disposal Groups [Member] | AURELIUS Group [Member] | Germany, Poland And Bulgaria [Member]
Business Acquisition [Line Items]
Sales				$ 88,000
P M Controls [Member]
Business Acquisition [Line Items]
Total cash consideration		$ 22,890
Goodwill		8,526
Future amortization expense associated with the acquired intangibles					$ 1,074
P M Agreements [Member] | P M Controls [Member]
Business Acquisition [Line Items]
Total cash consideration		$ 22,299