Revenue - Schedule of Disaggregated Revenue by Business Group (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Net sales	$ 1,872.5	$ 1,502.4	$ 5,101.0	$ 4,351.9
Utility Solutions
Disaggregation of Revenue [Line Items]
Net sales	1,027.8	943.8	3,002.5	2,736.4
Utility Solutions | United States
Disaggregation of Revenue [Line Items]
Net sales	987.8	905.3	2,888.0	2,614.7
Utility Solutions | International
Disaggregation of Revenue [Line Items]
Net sales	40.0	38.5	114.5	121.7
Utility Solutions | Grid Infrastructure
Disaggregation of Revenue [Line Items]
Net sales	808.0	714.8	2,320.6	2,031.2
Utility Solutions | Grid Automation
Disaggregation of Revenue [Line Items]
Net sales	219.8	229.0	681.9	705.2
Electrical Solutions
Disaggregation of Revenue [Line Items]
Net sales	844.7	558.6	2,098.5	1,615.5
Electrical Solutions | United States
Disaggregation of Revenue [Line Items]
Net sales	760.6	484.2	1,864.8	1,405.5
Electrical Solutions | International
Disaggregation of Revenue [Line Items]
Net sales	84.1	74.4	233.7	210.0
Electrical Solutions | Electrical Products
Disaggregation of Revenue [Line Items]
Net sales	405.9	233.6	913.7	664.7
Electrical Solutions | Industrial
Disaggregation of Revenue [Line Items]
Net sales	$ 438.8	$ 325.0	$ 1,184.8	$ 950.8