RESTRUCTURING COSTS - Schedule Of Restructuring Expense by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 228	$ 72	$ 75
Corporate and other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	51	14	13
Intelligent Devices
Restructuring Cost and Reserve [Line Items]
Restructuring costs	80	48	51
Intelligent Devices | Operating Segments | Final Control
Restructuring Cost and Reserve [Line Items]
Restructuring costs	12	12	38
Intelligent Devices | Operating Segments | Measurement & Analytical
Restructuring Cost and Reserve [Line Items]
Restructuring costs	26	9	3
Intelligent Devices | Operating Segments | Discrete Automation
Restructuring Cost and Reserve [Line Items]
Restructuring costs	35	27	0
Intelligent Devices | Operating Segments | Safety & Productivity
Restructuring Cost and Reserve [Line Items]
Restructuring costs	7	0	10
Software and Control
Restructuring Cost and Reserve [Line Items]
Restructuring costs	97	10	11
Software and Control | Operating Segments | Control Systems & Software
Restructuring Cost and Reserve [Line Items]
Restructuring costs	11	9	11
Software and Control | Operating Segments | Test & Measurement
Restructuring Cost and Reserve [Line Items]
Restructuring costs	78	0	0
Software and Control | Operating Segments | AspenTech
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 8	$ 1	$ 0