RESTRUCTURING COSTS - Schedule Of Restructuring Expense by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Restructuring [Line Items]
Expense	$ 11	$ 83
Corporate and other
Restructuring [Line Items]
Expense	1	26
Intelligent Devices
Restructuring [Line Items]
Expense	9	16
Software and Control
Restructuring [Line Items]
Expense	1	41
Final Control | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	2	3
Measurement & Analytical | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	1	3
Discrete Automation | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	6	10
Safety & Productivity | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	0	0
Control Systems & Software | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	2	1
Test & Measurement | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	(1)	40
AspenTech | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	$ 0	$ 0