Stockholders' Equity - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Oct. 01, 2024
Class of Stock [Line Items]
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, shares authorized	500,000,000	500,000,000
Stock repurchased during period (in shares)	0	0	1,050,000.00
Stock repurchased during period, value			$ 125
Maximum
Class of Stock [Line Items]
Common stock, shares authorized	500,000,000
Maximum | Forecast
Class of Stock [Line Items]
Stock authorized to repurchase				$ 2,000
Series A Junior Participating Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized	500,000