Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2025	Sep. 30, 2024
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 outstanding	120,800,000	128,800,000
Treasury Stock, Common
Treasury Stock, Shares	16,900,000	7,900,000