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Description of Business (Details)	12 Months Ended
	Sep. 30, 2025 segment $ / shares	Sep. 30, 2024 $ / shares	Jun. 05, 2020 $ / shares
Subsidiary, Sale of Stock [Line Items]
Number of fundamental operations | segment	2
Access Industries
Subsidiary, Sale of Stock [Line Items]
Sale of stock, percentage of ownership after transaction (as a percent)	98.00%
Sale of stock, percentage of economic interest (as a percent)	72.00%
Class A Common Stock
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Class A Common Stock | IPO
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in dollars per share)			$ 0.001
Class B Common Stock
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in dollars per share)	0.001	$ 0.001
Class B Common Stock | Access Industries
Subsidiary, Sale of Stock [Line Items]
Common stock, par value (in dollars per share)	$ 0.001

X

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

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-Topic 280
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-Section 50
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-Publisher FASB
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- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

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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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Sale Of Stock, Percentage Of Economic Interest

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