Number of Commercial and Institutional Clients

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- Definition

Number of Retail Clients

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No definition available.

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- Definition

In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

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

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- Definition

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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Face amount or stated value per share of common stock.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

The number of countries in which the entity operates as of balance sheet date.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Basis of Presentation and Consolidation and Accounting Standards Adopted (Details) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Nov. 07, 2023	Oct. 31, 2022 USD ($)	Mar. 31, 2024 USD ($) country client $ / shares	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($) country client $ / shares	Mar. 31, 2023 USD ($)	Mar. 01, 2024	Sep. 30, 2023 $ / shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of countries in which entity operates (more than) \| country			180		180
Number of commercial and institutional clients (more than) \| client			54,000		54,000
Number of retail clients \| client			400,000		400,000
Stock split, conversion ratio	1.5
Common stock - par value (in dollar per share) \| $ / shares			$ 0.01		$ 0.01			$ 0.01
Gain on acquisition and other gains			$ 0.0	$ 0.0	$ 0.0	$ 23.5
Senior Secured Notes due 2025 \| Senior Notes
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Debt instrument, interest rate, stated percentage			8.625%		8.625%		8.625%
Cotton Distributors Inc.
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Fair value of identifiable net assets acquired		$ 66.2
Purchase price		$ 42.7
Gain on acquisition and other gains						$ 23.5
Retail Segment
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of countries in which entity operates (more than) \| country			180		180