RESTRUCTURING COSTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Sep. 30, 2025
Restructuring [Line Items]
Expense	$ 11	$ 83
Costs incurred related to restructuring actions	2	4
Corporate and other
Restructuring [Line Items]
Expense	$ 1	$ 26
Forecast
Restructuring [Line Items]
Expected fiscal year restructuring expense			$ 110