Segment Information (Tables)

3 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Summary of segment information

The following table sets forth financial information by business segment (in millions):

	Net Sales				Operating Income				Operating Income as a % of Net Sales
	2017		2016		2017		2016		2017		2016
Three Months Ended March 31,
Electrical	$	587.5	$	582.7	$	50.0	$	55.4	8.5	%	9.5	%
Power	264.8		252.1		54.1		46.5		20.4	%	18.4	%
TOTAL	$	852.3	$	834.8	$	104.1	$	101.9	12.2	%	12.2	%