Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Net Sales	$ 1,078.4	$ 1,090.3
Electrical Solutions
Disaggregation of Revenue [Line Items]
Net Sales	546.2	563.7
Electrical Solutions | Commercial and Industrial
Disaggregation of Revenue [Line Items]
Net Sales	378.4	381.0
Electrical Solutions | Heavy Industrial
Disaggregation of Revenue [Line Items]
Net Sales	76.3	86.3
Electrical Solutions | Residential and Retail
Disaggregation of Revenue [Line Items]
Net Sales	91.5	96.4
Electrical Solutions | United States
Disaggregation of Revenue [Line Items]
Net Sales	488.0	507.3
Electrical Solutions | International
Disaggregation of Revenue [Line Items]
Net Sales	58.2	56.4
Utility Solutions
Disaggregation of Revenue [Line Items]
Net Sales	532.2	526.6
Utility Solutions | Utility T&D Components
Disaggregation of Revenue [Line Items]
Net Sales	374.9	354.9
Utility Solutions | Utility Communications and Controls
Disaggregation of Revenue [Line Items]
Net Sales	157.3	171.7
Utility Solutions | United States
Disaggregation of Revenue [Line Items]
Net Sales	501.4	497.9
Utility Solutions | International
Disaggregation of Revenue [Line Items]
Net Sales	$ 30.8	$ 28.7