2. Acquisitions (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2019	Oct. 01, 2019
Business Combinations [Abstract]
Business Combination, Consideration Transferred	$ 4.2
Payments to Acquire Businesses, Net of Cash Acquired	3.6
Business Combination, Contingent Consideration, Liability		$ 0.6
Business Combination, Separately Recognized Transactions, Revenues and Gains Recognized	0.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		3.4
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets	0.2
Business Combination, Consideration Transferred, Liabilities Incurred	$ 0.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		$ 1.4

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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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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The revenues and gains recognized recorded for each transaction with the acquiree that is recognized separately from the acquisition of assets and assumptions of liabilities in the business combination.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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