Equity-Based Compensation - Summary of Company's Restricted Stock Unit Activity (Details)	9 Months Ended
	Jun. 30, 2023 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted Average Exercise Price, Outstanding at September 30, 2022	$ 19.07
Forfeited, weighted average exercise price	19.01
Weighted Average Exercise Price, Outstanding at June 30, 2023	$ 19.08
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance, Outstanding | shares | shares	2,285,000
Granted | shares | shares	2,427,000
Forfeited | shares | shares	523,000
Forfeited | shares | shares	644,000
Ending balance, Outstanding | shares | shares	3,545,000
Weighted Average Exercise Price, Outstanding at September 30, 2022	$ 12.73
Granted, weighted average exercise price	7.3
Vested, weighted average exercise price	14.73
Forfeited, weighted average exercise price	10.21
Weighted Average Exercise Price, Outstanding at June 30, 2023	$ 9.18