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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information
Operating income	$ 657.9	$ 681.1	$ 1,869.6	$ 1,919.7
Stock-based compensation expense	(26.9)	(23.6)	(72.4)	(64.2)
Acquisition-related expenses	(9.0)	(12.0)	(18.4)	(12.0)
Other operating expenses	(17.5)	(17.3)	(51.3)	(50.9)
Interest expense	(33.6)	(32.8)	(104.5)	(91.3)
Gain on bargain purchase acquisition	0.0	0.0	5.4	0.0
Other income (expense), net	9.2	2.6	18.9	6.6
Income before income taxes	633.5	650.9	1,789.4	1,835.0
Operating Segment
Segment Reporting Information
Operating income	711.3	734.0	2,011.7	2,046.8
Operating Segment | Harsh Environment Solutions
Segment Reporting Information
Operating income	239.1	207.1	705.7	596.8
Operating Segment | Communications Solutions
Segment Reporting Information
Operating income	283.3	341.6	752.4	927.2
Operating Segment | Interconnect and Sensor Systems
Segment Reporting Information
Operating income	$ 188.9	$ 185.3	$ 553.6	$ 522.8