Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) group	Sep. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Net Sales	$ 1,108.6	$ 1,204.0	$ 3,148.1	$ 3,487.7
Operating Income	$ 162.9	$ 172.9	$ 413.2	$ 460.7
Operating Income as a % of Net Sales	14.70%	14.40%	13.10%	13.20%
Electrical
Segment Reporting Information [Line Items]
Number of business groups (in groups) | group			3
Net Sales	$ 591.2	$ 689.3	$ 1,704.4	$ 2,007.7
Operating Income	$ 70.6	$ 90.2	$ 185.7	$ 246.8
Operating Income as a % of Net Sales	11.90%	13.10%	10.90%	12.30%
Utility Solutions
Segment Reporting Information [Line Items]
Net Sales	$ 517.4	$ 514.7	$ 1,443.7	$ 1,480.0
Operating Income	$ 92.3	$ 82.7	$ 227.5	$ 213.9
Operating Income as a % of Net Sales	17.80%	16.10%	15.80%	14.50%