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Segment Information (Tables)
 3 Months Ended
Mar. 31, 2021
Segment Reporting [Abstract]  
Summary of segment information
The following table sets forth financial information by business segment (in millions):
 Net SalesOperating IncomeOperating Income as a % of Net Sales
 202120202021202020212020
Three Months Ended March 31,      
Electrical Solutions$546.2 $563.7 $53.0 $52.5 9.7 %9.3 %
Utility Solutions532.2 526.6 64.6 66.3 12.1 %12.6 %
TOTAL$1,078.4 $1,090.3 $117.6 $118.8 10.9 %10.9 %