Goodwill and Other Identifiable Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 2,571.1
Acquisitions/divestitures	4.1
Foreign currency translation/other	(4.0)
Ending Balance	2,571.2
Enclosures
Goodwill [Roll Forward]
Beginning Balance	430.4
Acquisitions/divestitures	0.3
Foreign currency translation/other	(2.9)
Ending Balance	427.8
Electrical & Fastening Solutions
Goodwill [Roll Forward]
Beginning Balance	1,427.7
Acquisitions/divestitures	3.8
Foreign currency translation/other	0.0
Ending Balance	1,431.5
Thermal Management
Goodwill [Roll Forward]
Beginning Balance	713.0
Acquisitions/divestitures	0.0
Foreign currency translation/other	(1.1)
Ending Balance	$ 711.9