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.

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- Definition

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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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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- Definition

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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Acquisitions - Chasing Returns Ltd (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 03, 2021	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Goodwill		$ 58.1	$ 54.7
Chasing Returns Limited
Business Acquisition [Line Items]
Total merger consideration	$ 6.0
Goodwill	3.6
Chasing Returns Limited \| Software programs/platforms
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 2.4	$ 2.4