Business Segments - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023	Sep. 30, 2023
Segment Reporting Information [Line Items]
Net sales	$ 4,117	$ 3,373
Earnings (Loss)	139	422
Loss on Copeland equity method investment	(36)	0
Interest expense	(44)	(48)
Expense	83	10
Amortization of acquisition-related inventory step-up	231	0
Acquisition/divestiture costs	80	0
Gain (loss) on sale of business		2,780
Unrealized gain (loss) on derivatives	35
National Instruments
Segment Reporting Information [Line Items]
Net sales				$ 170
Acquisition/divestiture costs	130	198	$ 110
Restructuring Charges | National Instruments
Segment Reporting Information [Line Items]
Stock compensation	30
Intelligent Devices
Segment Reporting Information [Line Items]
Expense	16	1
Software and Control
Segment Reporting Information [Line Items]
Expense	41	1
Russia
Segment Reporting Information [Line Items]
Gain (loss) on sale of business		(47)
Operating Segments | Intelligent Devices
Segment Reporting Information [Line Items]
Net sales	2,822	2,539
Earnings (Loss)	594	517
Operating Segments | Software and Control
Segment Reporting Information [Line Items]
Net sales	1,314	849
Earnings (Loss)	36	74
Operating Segments | Final Control | Intelligent Devices
Segment Reporting Information [Line Items]
Net sales	940	862
Earnings (Loss)	194	158
Expense	3	(1)
Operating Segments | Measurement & Analytical | Intelligent Devices
Segment Reporting Information [Line Items]
Net sales	947	749
Earnings (Loss)	235	175
Expense	3	1
Operating Segments | Discrete Automation | Intelligent Devices
Segment Reporting Information [Line Items]
Net sales	613	618
Earnings (Loss)	97	121
Expense	10	1
Operating Segments | Safety & Productivity | Intelligent Devices
Segment Reporting Information [Line Items]
Net sales	322	310
Earnings (Loss)	68	63
Expense	0	0
Operating Segments | Control Systems & Software | Software and Control
Segment Reporting Information [Line Items]
Net sales	675	606
Earnings (Loss)	149	107
Expense	1	1
Operating Segments | Test & Measurement | Software and Control
Segment Reporting Information [Line Items]
Net sales	382	0
Earnings (Loss)	(78)	0
Expense	40	0
Operating Segments | AspenTech | Software and Control
Segment Reporting Information [Line Items]
Net sales	257	243
Earnings (Loss)	(35)	(33)
Expense	0	0
Segment Reconciling
Segment Reporting Information [Line Items]
Stock compensation	(74)	(102)
Unallocated pension and postretirement costs	31	45
Loss on Copeland equity method investment	(36)	0
Segment Reconciling | Related Party
Segment Reporting Information [Line Items]
Interest income	31	0
Corporate and other
Segment Reporting Information [Line Items]
Earnings (Loss)	(399)	(64)
Expense	26	8
Eliminations/Interest
Segment Reporting Information [Line Items]
Net sales	(19)	(15)
Interest expense	$ (44)	$ (48)