Reportable Business Segments, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information
Operating income	$ 698.8	$ 619.9	$ 1,383.7	$ 1,211.6
Stock-based compensation expense	(26.6)	(23.8)	(50.4)	(45.5)
Acquisition-related expenses	(70.0)	(4.0)	(70.0)	(9.4)
Other operating expenses	(18.1)	(17.0)	(35.5)	(33.9)
Interest expense	(56.3)	(35.0)	(94.4)	(71.0)
Gain on bargain purchase acquisition	0.0	5.4	0.0	5.4
Other income (expense), net	21.3	5.6	37.3	9.8
Income before income taxes	663.8	595.9	1,326.6	1,155.8
Operating Segment
Segment Reporting Information
Operating income	813.5	664.7	1,539.6	1,300.4
Operating Segment | Harsh Environment Solutions
Segment Reporting Information
Operating income	259.6	240.3	504.1	466.6
Operating Segment | Communications Solutions
Segment Reporting Information
Operating income	350.6	238.5	636.8	469.1
Operating Segment | Interconnect and Sensor Systems
Segment Reporting Information
Operating income	$ 203.3	$ 185.9	$ 398.7	$ 364.7