Stockholders’ Equity - Summary of Restricted Stock Units Activity (Details) - Restricted Stock Units	9 Months Ended
	Jun. 30, 2025 $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	542,119,000
Awarded (in shares) | shares	364,050,000
Vested (in shares) | shares	(238,352,000)
Forfeited (in shares) | shares	(3,999,000)
Ending balance (in shares) | shares	663,818,000
Weighted Average Grant Date Fair Value
Beginning balance (in usd per share) | $ / shares	$ 27.20
Awarded (in usd per shares) | $ / shares	23.91
Vested (in usd per shares) | $ / shares	27.54
Forfeited (in usd per shares) | $ / shares	25.51
Ending balance (in usd per share) | $ / shares	$ 25.29