OTHER FINANCIAL INFORMATION - Schedule of Goodwill by Business Segment (Details) - USD ($) $ in Millions	Mar. 31, 2024	Sep. 30, 2023
Goodwill [Line Items]
Goodwill	$ 17,964	$ 14,480
Intelligent Devices
Goodwill [Line Items]
Goodwill	5,549	5,485
Software and Control
Goodwill [Line Items]
Goodwill	12,415	8,995
Final Control | Intelligent Devices
Goodwill [Line Items]
Goodwill	2,682	2,660
Measurement & Analytical | Intelligent Devices
Goodwill [Line Items]
Goodwill	1,560	1,545
Discrete Automation | Intelligent Devices
Goodwill [Line Items]
Goodwill	908	892
Safety & Productivity | Intelligent Devices
Goodwill [Line Items]
Goodwill	399	388
Control Systems & Software | Software and Control
Goodwill [Line Items]
Goodwill	671	668
Test & Measurement | Software and Control
Goodwill [Line Items]
Goodwill	3,415	0
AspenTech | Software and Control
Goodwill [Line Items]
Goodwill	$ 8,329	$ 8,327