Stock-Based Compensation - Performance Shares (Details) - Performance shares (PSUs)	12 Months Ended
	Sep. 30, 2022 $ / shares shares
Weighted Average Price
Nonvested, beginning period (in dollars per share) | $ / shares	$ 24.40
Granted (in dollars per share) | $ / shares	46.79
Vested (in dollars per share) | $ / shares	29.18
Forfeited (in dollars per share) | $ / shares	19.78
Nonvested, ending period (in dollars per share) | $ / shares	$ 29.51
Performance Shares/Units
Nonvested, beginning period (in shares) | shares	1,223,180
Granted (in shares) | shares	263,573
Vested (in shares) | shares	(252,149)
Forfeited (in shares) | shares	(165,890)
Nonvested, ending period (in shares) | shares	1,068,714