RESTRUCTURING COSTS - Schedule Of Restructuring Expense by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Restructuring [Line Items]
Expense	$ 30	$ 19	$ 113	$ 29
Corporate and other
Restructuring [Line Items]
Expense	11	3	37	11
Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	2	11	18	12
Software and Control
Restructuring [Line Items]
Expense	17	5	58	6
Final Control | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	(7)	2	(4)	1
Measurement & Analytical | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	1	0	4	1
Discrete Automation | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	7	7	17	8
Safety & Productivity | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	1	2	1	2
Control Systems & Software | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	3	5	4	6
Test & Measurement | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	14	0	54	0
AspenTech | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	$ 0	$ 0	$ 0	$ 0