Stock-Based Compensation - Summary of RSUs Activity (Details) - Restricted Stock Units (RSUs)	6 Months Ended
	Mar. 31, 2023 $ / shares shares
Number of RSUs
Beginning of period (in shares) | shares	4,069,431
Granted (in shares) | shares	1,098,544
Vested (in shares) | shares	(763,132)
Forfeited (in shares) | shares	(74,500)
End of period (in shares) | shares	4,330,343
Weighted- Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share) | $ / shares	$ 62.96
Granted (in dollars per share) | $ / shares	34.67
Vested (in dollars per share) | $ / shares	54.20
Forfeited (in dollars per share) | $ / shares	57.28
Ending balance (in dollars per share) | $ / shares	$ 57.62