OTHER FINANCIAL INFORMATION - Schedule of Goodwill by Business Segment (Details) - USD ($) $ in Millions	Mar. 31, 2025	Sep. 30, 2024
Goodwill [Line Items]
Goodwill	$ 17,999	$ 18,067
Intelligent Devices
Goodwill [Line Items]
Goodwill	5,527	5,601
Software and Control
Goodwill [Line Items]
Goodwill	12,472	12,466
Final Control | Intelligent Devices
Goodwill [Line Items]
Goodwill	2,671	2,702
Measurement & Analytical | Intelligent Devices
Goodwill [Line Items]
Goodwill	1,556	1,576
Discrete Automation | Intelligent Devices
Goodwill [Line Items]
Goodwill	905	919
Safety & Productivity | Intelligent Devices
Goodwill [Line Items]
Goodwill	395	404
Control Systems & Software | Software and Control
Goodwill [Line Items]
Goodwill	9,026	9,003
Test & Measurement | Software and Control
Goodwill [Line Items]
Goodwill	$ 3,446	$ 3,463