SHAREHOLDERS' EQUITY, Preferred Stock by Class (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 30, 2024
Class of Stock [Line Items]
Carrying value	$ 79	$ 79
Series B Preferred Stock
Class of Stock [Line Items]
Shares outstanding (in shares)	80,500	80,500
Carrying value	$ 79	$ 79
Aggregate liquidation preference	$ 81	$ 81