Goodwill (Schedule of Goodwill) (Details) $ in Thousands	3 Months Ended
Dec. 31, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning of the period	$ 392,890
Business combinations and divestitures	1,166
Measurement period adjustment	298
Foreign currency translation	2,652
Goodwill, end of the period	397,006
Operating Segments \| Integrated Solutions and Services
Goodwill [Roll Forward]
Goodwill, beginning of the period	222,013
Business combinations and divestitures	1,403
Measurement period adjustment	0
Foreign currency translation	863
Goodwill, end of the period	224,279
Operating Segments \| Applied Product Technologies
Goodwill [Roll Forward]
Goodwill, beginning of the period	170,877
Business combinations and divestitures	(237)
Measurement period adjustment	298
Foreign currency translation	1,789
Goodwill, end of the period	$ 172,727

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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