Other Financial Information (Goodwill) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022
Goodwill [Line Items]
Goodwill	$ 14,131	$ 13,946
Measurement & Analytical Instrumentation [Member]
Goodwill [Line Items]
Goodwill	1,191	1,112
Final Control
Goodwill [Line Items]
Goodwill	2,689	2,605
Discrete Automation
Goodwill [Line Items]
Goodwill	851	807
Safety & Productivity [Member]
Goodwill [Line Items]
Goodwill	398	364
Intelligent Devices
Goodwill [Line Items]
Goodwill	5,129	4,888
AspenTech
Goodwill [Line Items]
Goodwill	8,330	8,326
Control Systems & Software
Goodwill [Line Items]
Goodwill	672	732
Software and Control
Goodwill [Line Items]
Goodwill	$ 9,002	$ 9,058