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Business Combination Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		$ 37.2
Payments to Acquire Businesses, Gross				$ 26.6
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period					$ 15.0
Business Combination, Consideration Transferred	$ 140.7
Repayment of Krausz debt		(13.2)	$ 0.0	$ 0.0
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Net Working Capital		2.0
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred		1.7
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities		9.9
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles		37.8
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets		$ 21.4
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		12 years

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Business Combination, Provision Information, Initial Accounting Incomplete, Adjustment, Net Working Capital

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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Total revenue reported by the acquired entity for its previous full fiscal year before the business acquisition.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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