Segment Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($) group
Segment Reporting Information [Line Items]
Net Sales	$ 1,078.4	$ 1,090.3
Operating Income	$ 117.6	$ 118.8
Operating Income as a % of Net Sales	10.90%	10.90%
Electrical Solutions
Segment Reporting Information [Line Items]
Number of business groups | group		3
Net Sales	$ 546.2	$ 563.7
Operating Income	$ 53.0	$ 52.5
Operating Income as a % of Net Sales	9.70%	9.30%
Utility Solutions
Segment Reporting Information [Line Items]
Net Sales	$ 532.2	$ 526.6
Operating Income	$ 64.6	$ 66.3
Operating Income as a % of Net Sales	12.10%	12.60%