Industry Segments and Geographic Area Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Summary of Industry Segment Data

INDUSTRY SEGMENT DATA

	2015			2014			2013
Net Sales:
Electrical	$	2,388.3		$	2,398.2		$	2,262.6
Power	1,002.1			961.2			921.3
TOTAL NET SALES	$	3,390.4		$	3,359.4		$	3,183.9
Operating Income:
Electrical	$	279.0		$	337.9		$	341.1
Power	195.6			179.5			166.5
Operating Income	$	474.6		$	517.4		$	507.6
Interest expense	(31.0		)	(31.2		)	(30.8		)
Investment income and other expense, net	(25.0		)	(0.7		)	(3.0		)
INCOME BEFORE INCOME TAXES	$	418.6		$	485.5		$	473.8
Assets:
Electrical	$	2,120.9		$	1,963.0		$	1,813.8
Power	839.7			832.0			707.0
General Corporate	248.1			525.1			663.2
TOTAL ASSETS	$	3,208.7		$	3,320.1		$	3,184.0
Capital Expenditures:
Electrical	$	47.9		$	35.1		$	32.4
Power	28.4			21.8			25.0
General Corporate	0.8			3.4			1.4
TOTAL CAPITAL EXPENDITURES	$	77.1		$	60.3		$	58.8
Depreciation and Amortization:
Electrical	$	56.2		$	53.4		$	48.0
Power	29.0			25.8			22.6
TOTAL DEPRECIATION AND AMORTIZATION	$	85.2		$	79.2		$	70.6

PRODUCT CLASS DATA

	2015		2014		2013
Net Sales:
Electrical Systems	$	1,476.7	$	1,538.7	$	1,466.4
Lighting	911.6		859.5		796.2
Power	1,002.1		961.2		921.3
TOTAL NET SALES	$	3,390.4	$	3,359.4	$	3,183.9

Summary of Geographic Area Data

GEOGRAPHIC AREA DATA

	2015		2014		2013
Net Sales:
United States	$	3,008.4	$	2,883.8	$	2,687.6
International	382.0		475.6		496.3
TOTAL NET SALES	$	3,390.4	$	3,359.4	$	3,183.9
Operating Income:
United States	$	426.1	$	447.2	$	417.5
International	48.5		70.2		90.1
TOTAL OPERATING INCOME	$	474.6	$	517.4	$	507.6
Long-lived Assets:
United States	$	1,627.7	$	1,492.5	$	1,341.4
International	187.1		199.7		212.3
TOTAL LONG-LIVED ASSETS	$	1,814.8	$	1,692.2	$	1,553.7