RESTRUCTURING COSTS - Schedule Of Restructuring Expense by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 136	$ 228	$ 72
Corporate and other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	41	51	14
Intelligent Devices
Restructuring Cost and Reserve [Line Items]
Restructuring costs	55	80	48
Intelligent Devices | Operating Segments | Final Control
Restructuring Cost and Reserve [Line Items]
Restructuring costs	9	12	12
Intelligent Devices | Operating Segments | Measurement & Analytical
Restructuring Cost and Reserve [Line Items]
Restructuring costs	14	26	9
Intelligent Devices | Operating Segments | Discrete Automation
Restructuring Cost and Reserve [Line Items]
Restructuring costs	28	35	27
Intelligent Devices | Operating Segments | Safety & Productivity
Restructuring Cost and Reserve [Line Items]
Restructuring costs	4	7	0
Software & Control
Restructuring Cost and Reserve [Line Items]
Restructuring costs	40	97	10
Software & Control | Operating Segments | Control Systems & Software
Restructuring Cost and Reserve [Line Items]
Restructuring costs	25	19	10
Software & Control | Operating Segments | Test & Measurement
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 15	$ 78	$ 0