Equity-Based Compensation - Summary of Company's Restricted Stock Unit Activity (Details)	9 Months Ended
	Jun. 30, 2026 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted Average Exercise Price, Outstanding at September 30, 2025	$ 19.11
Forfeited, weighted average exercise price	17.95
Weighted Average Exercise Price, Outstanding at March 31, 2026	$ 19.18
Restricted Stock Units (RSU) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance, Outstanding | shares	2,779,000
Granted | shares	1,037,000
Vested | shares	1,027,000
Forfeited | shares	267,000
Ending balance, Outstanding | shares	2,522,000
Weighted Average Exercise Price, Outstanding at September 30, 2025	$ 10.51
Granted, weighted average exercise price	12.71
Vested, weighted average exercise price	10.15
Forfeited, weighted average exercise price	12.81
Weighted Average Exercise Price, Outstanding at March 31, 2026	$ 11.3