Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2024	Sep. 30, 2023
Preferred Stock
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000.0	50,000,000.0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common Stock
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000.0	500,000,000.0
Common stock, shares issued	136,700,000	136,500,000
Common stock, shares outstanding	128,800,000	131,200,000
Treasury Stock, Common
Treasury Stock, Shares	7,900,000	5,300,000