Revenue (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue
Net Sales	$ 547.5	$ 515.4	$ 1,668.4	$ 1,440.4
Shakes
Disaggregation of Revenue
Net Sales	438.3	412.2	1,365.3	1,160.1
Powders
Disaggregation of Revenue
Net Sales	92.4	90.1	261.6	243.9
Other
Disaggregation of Revenue
Net Sales	$ 16.8	$ 13.1	$ 41.5	$ 36.4

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.

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details