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Summary of Significant Accounting Policies Unaudited Interim Financial Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025	Sep. 30, 2025
Business Acquisition [Line Items]
Contract asset	$ 2.2		$ 2.2		$ 1.3
Contract liability	5.1		5.1		5.1
Contract liability recognized as revenue			4.0
Capitalized contract cost, amortization	0.4	$ 0.4	$ 0.8	$ 0.8
Percentage purchase model transactions			20.00%
Purchase of inventory	15.9		$ 15.9		10.1
Prepaid Expenses and Other Current Assets
Business Acquisition [Line Items]
Contract costs	$ 2.4		$ 2.4		$ 2.3

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