Industry Segments and Geographic Area Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Summary of Industry Segment Data

INDUSTRY SEGMENT DATA

	2018			2017			2016
Net Sales:
Electrical	$	2,660.6		$	2,532.8		$	2,460.2
Power	1,821.1			1,136.0			1,045.0
TOTAL NET SALES	$	4,481.7		$	3,668.8		$	3,505.2
Operating Income:
Electrical	$	320.8		$	294.0		$	276.4
Power	236.1			224.8			213.4
Operating Income	$	556.9		$	518.8		$	489.8
Interest expense	(72.4		)	(44.9		)	(43.4		)
Loss on extinguishment of debt	—			(10.1		)	—
Investment income and other expense, net	(17.5		)	(20.7		)	(16.0		)
INCOME BEFORE INCOME TAXES	$	467.0		$	443.1		$	430.4
Assets:
Electrical	$	2,228.5		$	2,344.7		$	2,246.0
Power	2,395.8			1,102.2			911.5
General Corporate	247.8			273.7			367.5
TOTAL ASSETS	$	4,872.1		$	3,720.6		$	3,525.0
Capital Expenditures:
Electrical	$	53.0		$	48.0		$	43.4
Power	36.8			29.0			22.7
General Corporate	6.4			2.7			1.1
TOTAL CAPITAL EXPENDITURES	$	96.2		$	79.7		$	67.2
Depreciation and Amortization:
Electrical	$	61.4		$	64.7		$	60.2
Power	87.0			33.5			30.7
TOTAL DEPRECIATION AND AMORTIZATION	$	148.4		$	98.2		$	90.9

Summary of Geographic Area Data

GEOGRAPHIC AREA DATA

	2018		2017		2016
Net Sales:
United States	$	4,040.6	$	3,280.9	$	3,147.4
International	441.1		387.9		357.8
TOTAL NET SALES	$	4,481.7	$	3,668.8	$	3,505.2
Operating Income:
United States	$	478.0	$	435.8	$	431.1
International	78.9		83.0		58.7
TOTAL OPERATING INCOME	$	556.9	$	518.8	$	489.8
Long-lived Assets:
United States	$	2,972.4	$	1,877.4	$	1,762.9
International	245.0		232.8		200.1
TOTAL LONG-LIVED ASSETS	$	3,217.4	$	2,110.2	$	1,963.0