RESTRUCTURING COSTS - Schedule Of Restructuring Expense by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring [Line Items]
Expense	$ 57	$ 12	$ 170	$ 41
Corporate and other
Restructuring [Line Items]
Expense	5	1	42	12
Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	25	10	43	22
Software and Control
Restructuring [Line Items]
Expense	27	1	85	7
Final Control | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	5	(2)	1	(1)
Measurement & Analytical | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	3	1	7	2
Discrete Automation | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	16	12	33	20
Safety & Productivity | Intelligent Devices | Operating Segments
Restructuring [Line Items]
Expense	1	(1)	2	1
Control Systems & Software | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	3	1	7	7
Test & Measurement | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	24	0	78	0
AspenTech | Software and Control | Operating Segments
Restructuring [Line Items]
Expense	$ 0	$ 0	$ 0	$ 0