RESTRUCTURING COSTS - Schedule Of Restructuring Expense by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Restructuring [Line Items]
Expense	$ 37	$ 57	$ 70	$ 170
Intelligent Devices \| Operating Segments
Restructuring [Line Items]
Expense	10	25	28	43
Software and Control
Restructuring [Line Items]
Expense	7	27	19	85
Final Control \| Intelligent Devices \| Operating Segments
Restructuring [Line Items]
Expense	3	5	6	1
Measurement & Analytical \| Intelligent Devices \| Operating Segments
Restructuring [Line Items]
Expense	2	3	5	7
Discrete Automation \| Intelligent Devices \| Operating Segments
Restructuring [Line Items]
Expense	6	16	17	33
Safety & Productivity \| Intelligent Devices \| Operating Segments
Restructuring [Line Items]
Expense	(1)	1	0	2
Control Systems & Software \| Software and Control \| Operating Segments
Restructuring [Line Items]
Expense	7	3	16	7
Test & Measurement \| Software and Control \| Operating Segments
Restructuring [Line Items]
Expense	$ 0	$ 24	$ 3	$ 78