Reportable Business Segments, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information
Operating income	$ 589.8	$ 464.8
Stock-based compensation expense	(19.7)	(19.1)
Other operating expenses	(16.2)	(14.0)
Interest expense	(28.1)	(28.6)
Other income (expense), net	1.7	(0.3)
Income before income taxes	563.4	435.9
Operating Segment
Segment Reporting Information
Operating income	625.7	497.9
Operating Segment | Harsh Environment Solutions
Segment Reporting Information
Operating income	183.2	158.3
Operating Segment | Communications Solutions
Segment Reporting Information
Operating income	282.5	204.5
Operating Segment | Interconnect and Sensor Systems
Segment Reporting Information
Operating income	$ 160.0	$ 135.1