Segment Information - Financial Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Net sales	$ 874.6	$ 740.6
Segment income	159.2	124.1
Enclosures
Segment Reporting Information [Line Items]
Net sales	439.9	391.0
Segment income	94.8	82.5
Electrical & Fastening Solutions
Segment Reporting Information [Line Items]
Net sales	292.2	205.7
Segment income	85.2	61.3
Thermal Management
Segment Reporting Information [Line Items]
Net sales	142.5	143.9
Segment income	31.8	30.9
Other
Segment Reporting Information [Line Items]
Segment income	(19.5)	(26.7)
Operating Segments
Segment Reporting Information [Line Items]
Segment income	$ 192.3	$ 148.0