Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Sep. 30, 2025
Operating Loss Carryforwards [Line Items]
Effective income tax rate reconciliation (in percent)	46.90%	24.70%	(37.50%)	36.80%
Tax receivable agreement liability	$ 37.5		$ 37.5		$ 37.5
Percentage of net cash savings			85.00%
Deferred Tax Assets, Operating Loss Carryforwards, Domestic					6.7
Tax Credit Carryforward, Amount					9.7
Income Tax Jurisdiction, Domestic Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards					32.0
Deferred Tax Asset, Interest Carryforward					2.4
Income Tax Jurisdiction, Domestic State and Local
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards					1.4
Deferred Tax Asset, Interest Carryforward					$ 0.2