Revenue Recognition and Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Net sales	$ 4,994	$ 4,929	$ 15,004	$ 14,703
Operating Segments
Disaggregation of Revenue [Line Items]
Net sales		4,926	14,994	14,679
Quantinuum
Disaggregation of Revenue [Line Items]
Net sales	0	(3)	(10)	(24)
Building Automation \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,020	1,878	5,904	5,396
Building Automation \| Operating Segments \| Products
Disaggregation of Revenue [Line Items]
Net sales	1,113	1,009	3,210	2,899
Building Automation \| Operating Segments \| Solutions
Disaggregation of Revenue [Line Items]
Net sales	907	869	2,694	2,497
Building Automation \| Quantinuum
Disaggregation of Revenue [Line Items]
Net sales		0	0	0
Process Automation and Technology \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,859	1,598	5,051	4,656
Process Automation and Technology \| Operating Segments \| Projects
Disaggregation of Revenue [Line Items]
Net sales	797	687	2,236	1,956
Process Automation and Technology \| Operating Segments \| Aftermarket
Disaggregation of Revenue [Line Items]
Net sales	1,062	911	2,815	2,700
Process Automation and Technology \| Quantinuum
Disaggregation of Revenue [Line Items]
Net sales		0	0	0
Industrial Automation \| Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,115	1,450	4,039	4,627
Industrial Automation \| Operating Segments \| Products
Disaggregation of Revenue [Line Items]
Net sales	833	983	2,806	3,294
Industrial Automation \| Operating Segments \| Solutions
Disaggregation of Revenue [Line Items]
Net sales	$ 282	467	1,233	1,333
Industrial Automation \| Quantinuum
Disaggregation of Revenue [Line Items]
Net sales		$ 0	$ 0	$ 0