OTHER FINANCIAL INFORMATION - Schedule of Goodwill by Business Segment (Details) - USD ($) $ in Millions	Dec. 31, 2024	Sep. 30, 2024
Goodwill [Line Items]
Goodwill	$ 17,906	$ 18,067
Intelligent Devices
Goodwill [Line Items]
Goodwill	5,450	5,601
Software and Control
Goodwill [Line Items]
Goodwill	12,456	12,466
Final Control | Intelligent Devices
Goodwill [Line Items]
Goodwill	2,648	2,702
Measurement & Analytical | Intelligent Devices
Goodwill [Line Items]
Goodwill	1,531	1,576
Discrete Automation | Intelligent Devices
Goodwill [Line Items]
Goodwill	888	919
Safety & Productivity | Intelligent Devices
Goodwill [Line Items]
Goodwill	383	404
Control Systems & Software | Software and Control
Goodwill [Line Items]
Goodwill	665	674
Test & Measurement | Software and Control
Goodwill [Line Items]
Goodwill	3,436	3,463
AspenTech | Software and Control
Goodwill [Line Items]
Goodwill	$ 8,355	$ 8,329