Reportable Business Segments, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information
Stock-based compensation expense	$ (26.6)	$ (23.8)
Acquisition-related expenses	(44.0)	0.0
Operating income	1,024.8	684.8
Interest expense	(76.5)	(38.1)
Other income (expense), net	14.6	16.0
Income before income taxes	962.9	662.7
Operating Segment
Segment Reporting Information
Operating income	1,176.5	726.0
Interest expense	(76.5)	(38.1)
Other income (expense), net	14.6	16.0
Operating Segment | Harsh Environment Solutions
Segment Reporting Information
Operating income	311.2	244.4
Operating Segment | Communications Solutions
Segment Reporting Information
Operating income	660.8	286.2
Operating Segment | Interconnect and Sensor Systems
Segment Reporting Information
Operating income	204.5	195.4
Corporate
Segment Reporting Information
Stock-based compensation expense	(26.6)	(23.8)
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales	(60.9)	0.0
Acquisition-related expenses	(44.0)	0.0
Other operating expenses	$ (20.2)	$ (17.4)