Revenue - Vertical Sales by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 858.8	$ 745.2	$ 2,402.4	$ 2,167.4
Enclosures
Disaggregation of Revenue [Line Items]
Net sales	412.7	387.7	1,203.7	1,127.9
Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	302.3	209.2	774.7	597.7
Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	143.8	148.3	424.0	441.8
Industrial
Disaggregation of Revenue [Line Items]
Net sales	332.3	302.4	957.1	896.0
Industrial \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	224.6	211.3	665.8	624.5
Industrial \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	37.6	20.8	87.9	59.7
Industrial \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	70.1	70.3	203.4	211.8
Commercial & Residential
Disaggregation of Revenue [Line Items]
Net sales	279.9	212.2	722.2	619.2
Commercial & Residential \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	65.0	56.9	182.3	169.6
Commercial & Residential \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	169.2	104.7	408.8	303.8
Commercial & Residential \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	45.7	50.6	131.1	145.8
Energy
Disaggregation of Revenue [Line Items]
Net sales	40.9	36.4	121.8	110.7
Energy \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	6.5	6.9	19.2	19.6
Energy \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	12.5	8.9	32.0	24.5
Energy \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	21.9	20.6	70.6	66.6
Infrastructure
Disaggregation of Revenue [Line Items]
Net sales	205.7	194.2	601.3	541.5
Infrastructure \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	116.6	112.6	336.4	314.2
Infrastructure \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	83.0	74.8	246.0	209.7
Infrastructure \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	6.1	6.8	18.9	17.6
Developed Europe (1)
Disaggregation of Revenue [Line Items]
Net sales	149.6	138.9	445.8	433.4
Developed Europe (1) \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	87.3	76.3	252.6	238.7
Developed Europe (1) \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	34.1	33.4	108.2	101.8
Developed Europe (1) \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	28.2	29.2	85.0	92.9
Developing Countries
Disaggregation of Revenue [Line Items]
Net sales	67.4	65.2	199.9	211.8
Developing Countries \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	37.6	31.9	108.8	111.8
Developing Countries \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	13.1	12.4	36.2	33.2
Developing Countries \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	16.7	20.9	54.9	66.8
Other Developed Countries
Disaggregation of Revenue [Line Items]
Net sales	12.0	13.3	39.4	40.8
Other Developed Countries \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	3.7	4.1	12.3	13.2
Other Developed Countries \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	4.9	4.9	14.6	14.3
Other Developed Countries \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	3.4	4.3	12.5	13.3
U.S. and Canada
Disaggregation of Revenue [Line Items]
Net sales	629.8	527.8	1,717.3	1,481.4
U.S. and Canada \| Enclosures
Disaggregation of Revenue [Line Items]
Net sales	284.1	275.4	830.0	764.2
U.S. and Canada \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	250.2	158.5	615.7	448.4
U.S. and Canada \| Electrical & Fastening Solutions
Disaggregation of Revenue [Line Items]
Net sales	$ 95.5	$ 93.9	$ 271.6	$ 268.8