Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amounts of goodwill for the years ended December 31, 2017 and 2016, by segment, were as follows (in millions):

	Segment
	Electrical			Power		Total
BALANCE AT DECEMBER 31, 2015	$	611.2		$	317.3	$	928.5
Current year acquisitions	49.4			20.6		70.0
Foreign currency translation and prior year acquisitions	(8.6		)	1.1		(7.5		)
BALANCE AT DECEMBER 31, 2016	$	652.0		$	339.0	$	991.0
Current year acquisitions	58.7			29.8		88.5
Foreign currency translation and prior year acquisitions	6.9			2.6		9.5
BALANCE AT DECEMBER 31, 2017	$	717.6		$	371.4	$	1,089.0

Schedule of Identifiable Intangible Assets

Identifiable intangible assets are recorded in Intangible assets, net in the Consolidated Balance Sheet. Identifiable intangible assets are comprised of the following (in millions):

	December 31, 2017					December 31, 2016
	Gross Amount		Accumulated Amortization			Gross Amount		Accumulated Amortization
Definite-lived:
Patents, tradenames and trademarks	$	151.4	$	(50.1	)	$	143.7	$	(43.4	)
Customer/agent relationships and other	462.0		(156.7		)	405.9		(128.0		)
TOTAL DEFINITE-LIVED INTANGIBLES	613.4		(206.8		)	549.6		(171.4		)
Indefinite-lived:
Tradenames and other	53.8		—			53.3		—
TOTAL INTANGIBLE ASSETS	$	667.2	$	(206.8	)	$	602.9	$	(171.4	)