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Segment Information - Financial Information by Reportable Segment (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 [Line Items]
Net sales	$ 858.8	$ 745.2	$ 2,402.4	$ 2,167.4
Segment income	156.2	120.5	427.0	315.3
Enclosures
Segment Reporting Information [Line Items]
Net sales	412.7	387.7	1,203.7	1,127.9
Segment income	89.4	71.9	261.9	183.7
Electrical & Fastening Solutions
Segment Reporting Information [Line Items]
Net sales	302.3	209.2	774.7	597.7
Segment income	97.6	60.8	245.4	166.7
Electrical & Fastening Solutions
Segment Reporting Information [Line Items]
Net sales	143.8	148.3	424.0	441.8
Segment income	34.8	35.9	94.3	96.6
Other
Segment Reporting Information [Line Items]
Segment income	(19.8)	(24.6)	(70.3)	(67.6)
Operating Segments
Segment Reporting Information [Line Items]
Segment income	$ 202.0	$ 144.0	$ 531.3	$ 379.4

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