Segment Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) group	Mar. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Net Sales	$ 1,090.3	$ 1,087.3
Operating Income	$ 118.8	$ 120.9
Operating Income as a % of Net Sales	10.90%	11.10%
Electrical
Segment Reporting Information [Line Items]
Number of business groups (in groups) | group	3
Net Sales	$ 606.1	$ 630.2
Operating Income	$ 58.0	$ 68.6
Operating Income as a % of Net Sales	9.60%	10.90%
Utility Solutions
Segment Reporting Information [Line Items]
Net Sales	$ 484.2	$ 457.1
Operating Income	$ 60.8	$ 52.3
Operating Income as a % of Net Sales	12.50%	11.40%