Stock-Based Compensation - Performance Shares (Details) - Performance shares (PSUs)	12 Months Ended
	Sep. 30, 2025 $ / shares shares
Weighted Average Price
Nonvested, beginning period (in dollars per share) | $ / shares	$ 38.39
Granted (in dollars per share) | $ / shares	20.40
Vested (in dollars per share) | $ / shares	46.79
Forfeited (in dollars per share) | $ / shares	44.28
Nonvested, ending period (in dollars per share) | $ / shares	$ 26.85
Performance Shares/Units
Nonvested, beginning period (in shares) | shares	807,629
Granted (in shares) | shares	759,815
Vested (in shares) | shares	(119,367)
Forfeited (in shares) | shares	(117,072)
Nonvested, ending period (in shares) | shares	1,331,005