Restructuring Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Sep. 30, 2023
Restructuring Reserve [Roll Forward]
Beginning restructuring liability			$ 122
Restructuring expense	$ 19	$ 9	29	$ 15
Restructuring utilized/paid			42
Ending restructuring liability	109		109
Cost of sales and selling, general, and administrative expenses [Member]
Restructuring Reserve [Roll Forward]
Restructuring expense	7	5	12	13
Severance and benefits [Member]
Restructuring Reserve [Roll Forward]
Beginning restructuring liability			117
Restructuring expense			10
Restructuring utilized/paid			21
Ending restructuring liability	106		106
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Beginning restructuring liability			5
Restructuring expense			19
Restructuring utilized/paid			21
Ending restructuring liability	3		3
Measurement & Analytical Instrumentation [Member]
Restructuring Reserve [Roll Forward]
Restructuring expense	2	4	1	5
Final Control
Restructuring Reserve [Roll Forward]
Restructuring expense	0	3	1	4
Discrete Automation
Restructuring Reserve [Roll Forward]
Restructuring expense	7	1	8	3
Safety & Productivity [Member]
Restructuring Reserve [Roll Forward]
Restructuring expense	2	1	2	1
Intelligent Devices
Restructuring Reserve [Roll Forward]
Restructuring expense	11	9	12	13
AspenTech
Restructuring Reserve [Roll Forward]
Restructuring expense	5	0	0	0
Control Systems & Software
Restructuring Reserve [Roll Forward]
Restructuring expense	0	0	6	1
Software and Control
Restructuring Reserve [Roll Forward]
Restructuring expense	5	0	6	1
Corporate [Member]
Restructuring Reserve [Roll Forward]
Restructuring expense	$ 3	$ 0	$ 11	$ 1
Forecast [Member]
Restructuring Reserve [Roll Forward]
Expected fiscal year restructuring expense					$ 90