Stock-Based Compensation - Restricted Stock Unit Activity (Details) - Restricted stock units $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Number of Units
Outstanding, beginning balance (in shares) | shares	8,308,177
Granted (in shares) | shares	4,658,164
Released (in shares) | shares	(992,867)
Forfeited (in shares) | shares	(182,718)
Outstanding, ending balance (in shares) | shares	11,790,756
Units expected to vest (in shares) | shares	9,943,485
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in USD per share) | $ / shares	$ 19.25
Granted (in USD per share) | $ / shares	17.40
Released (in USD per share) | $ / shares	15.97
Forfeited (in USD per share) | $ / shares	18.95
Outstanding, ending balance (in USD per share) | $ / shares	18.80
Vested and expected to vest - Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 18.66
Additional Information
Aggregate Intrinsic Value, beginning balance | $	$ 115,484
Aggregate Intrinsic Value, ending balance | $	199,264
Vested and expected to vest - Weighted Average Intrinsic Value | $	$ 168,045