BUSINESS SEGMENTS INFORMATION - Schedule of Financial Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Total Assets	$ 41,964				$ 44,246				$ 41,964	$ 44,246	$ 42,746
Depreciation and Amortization									1,518	1,689	1,051
Capital Expenditures									431	419	363
Sales	4,855	$ 4,553	$ 4,432	$ 4,175	4,619	$ 4,380	$ 4,376	$ 4,117	18,016	17,492	15,165
Operating Segments
Segment Reporting Information [Line Items]
Sales									18,091	17,560	15,236
Corporate and other
Segment Reporting Information [Line Items]
Total Assets	3,413				5,607				3,413	5,607	13,226
Depreciation and Amortization									44	46	37
Capital Expenditures									35	62	47
Intelligent Devices | Operating Segments
Segment Reporting Information [Line Items]
Total Assets	13,984				13,526				13,984	13,526	13,321
Depreciation and Amortization									448	442	432
Capital Expenditures									316	284	277
Sales									12,400	12,161	11,588
Intelligent Devices | Operating Segments | Final Control
Segment Reporting Information [Line Items]
Total Assets	5,889				5,706				5,889	5,706	5,614
Depreciation and Amortization									161	159	170
Capital Expenditures									102	93	93
Sales									4,380	4,204	3,970
Intelligent Devices | Operating Segments | Measurement & Analytical
Segment Reporting Information [Line Items]
Total Assets	4,253				4,122				4,253	4,122	3,976
Depreciation and Amortization									140	138	121
Capital Expenditures									107	84	93
Sales									4,143	4,061	3,595
Intelligent Devices | Operating Segments | Discrete Automation
Segment Reporting Information [Line Items]
Total Assets	2,569				2,470				2,569	2,470	2,493
Depreciation and Amortization									87	87	84
Capital Expenditures									61	61	56
Sales									2,521	2,506	2,635
Intelligent Devices | Operating Segments | Safety & Productivity
Segment Reporting Information [Line Items]
Total Assets	1,273				1,228				1,273	1,228	1,238
Depreciation and Amortization									60	58	57
Capital Expenditures									46	46	35
Sales									1,356	1,390	1,388
Software & Control | Operating Segments
Segment Reporting Information [Line Items]
Total Assets	24,567				25,113				24,567	25,113	16,199
Depreciation and Amortization									1,026	1,201	582
Capital Expenditures									80	73	39
Sales									5,691	5,399	3,648
Software & Control | Operating Segments | Control Systems & Software
Segment Reporting Information [Line Items]
Total Assets	15,758				15,903				15,758	15,903	16,199
Depreciation and Amortization									550	594	582
Capital Expenditures									51	46	39
Sales									4,205	3,935	3,648
Software & Control | Operating Segments | Test & Measurement
Segment Reporting Information [Line Items]
Total Assets	$ 8,809				$ 9,210				8,809	9,210	0
Depreciation and Amortization									476	607	0
Capital Expenditures									29	27	0
Sales									$ 1,486	$ 1,464	$ 0