Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023
Related Party Transaction [Line Items]
Selling, general and administrative expenses	$ 52.8	$ 41.7
Accounts payable	91.3		$ 89.0
Master services agreement fees
Related Party Transaction [Line Items]
Selling, general and administrative expenses	0.9	1.3
Co-Packing Agreement
Related Party Transaction [Line Items]
Start-up costs reimbursable to related party	1.0	$ 0.0
Accounts payable	$ 3.5		$ 2.5

Start-up costs reimbursable to related party

No definition available.

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

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-Publisher FASB
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

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-Topic 946
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-Name Accounting Standards Codification
-Section S99
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-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

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-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
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- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
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-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

+ Details

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- Details

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- Details

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