GOODWILL AND OTHER INTANGIBLES - Schedule Of Change In Carry Amount Of Goodwill By Business Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 18,067	$ 14,480
Acquisitions	32	3,442
Foreign currency translation and other	94	145
Goodwill, ending balance	18,193	18,067
Operating Segments | Intelligent Devices | Final Control
Goodwill [Roll Forward]
Goodwill, beginning balance	2,702	2,660
Acquisitions	0	0
Foreign currency translation and other	16	42
Goodwill, ending balance	2,718	2,702
Operating Segments | Intelligent Devices | Measurement & Analytical
Goodwill [Roll Forward]
Goodwill, beginning balance	1,576	1,545
Acquisitions	0	0
Foreign currency translation and other	28	31
Goodwill, ending balance	1,604	1,576
Operating Segments | Intelligent Devices | Discrete Automation
Goodwill [Roll Forward]
Goodwill, beginning balance	919	892
Acquisitions	0	0
Foreign currency translation and other	26	27
Goodwill, ending balance	945	919
Operating Segments | Intelligent Devices | Safety & Productivity
Goodwill [Roll Forward]
Goodwill, beginning balance	404	388
Acquisitions	0	0
Foreign currency translation and other	17	16
Goodwill, ending balance	421	404
Operating Segments | Software & Control | Control Systems & Software
Goodwill [Roll Forward]
Goodwill, beginning balance	9,003	8,995
Acquisitions	32	0
Foreign currency translation and other	2	8
Goodwill, ending balance	9,037	9,003
Operating Segments | Software & Control | Test & Measurement
Goodwill [Roll Forward]
Goodwill, beginning balance	3,463	0
Acquisitions	0	3,442
Foreign currency translation and other	5	21
Goodwill, ending balance	$ 3,468	$ 3,463