Reportable Business Segments, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information
Operating income	$ 819.5	$ 657.9	$ 2,203.2	$ 1,869.6
Stock-based compensation expense	(29.5)	(26.9)	(79.9)	(72.4)
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales	(18.2)	0.0	(18.2)	0.0
Acquisition-related expenses	(45.4)	(9.0)	(115.4)	(18.4)
Other operating expenses	(19.7)	(17.5)	(55.1)	(51.3)
Interest expense	(55.7)	(33.6)	(150.1)	(104.5)
Gain on bargain purchase acquisition	0.0	0.0	0.0	5.4
Other income (expense), net	11.2	9.2	48.5	18.9
Income before income taxes	775.0	633.5	2,101.6	1,789.4
Operating Segment
Segment Reporting Information
Operating income	932.3	711.3	2,471.8	2,011.7
Operating Segment | Harsh Environment Solutions
Segment Reporting Information
Operating income	283.7	239.1	787.8	705.7
Operating Segment | Communications Solutions
Segment Reporting Information
Operating income	431.0	283.3	1,067.7	752.4
Operating Segment | Interconnect and Sensor Systems
Segment Reporting Information
Operating income	$ 217.6	$ 188.9	$ 616.3	$ 553.6