Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill by segment

The changes in the carrying amount of goodwill were as follows:

(dollars in millions)	Electronics		Industrial & Specialty			Total
Balance at December 31, 2018	$	1,226.7	$	955.9	(1)	$	2,182.6
Foreign currency translation	(32.7)		(24.1)			(56.8)
Balance at September 30, 2019	$	1,194.0	$	931.8	(1)	$	2,125.8

(1) Includes accumulated impairment losses of $46.6 million.

Schedule of finite-lived intangible assets subject to amortization

Intangible assets subject to amortization were as follows:

	September 30, 2019						December 31, 2018
(dollars in millions)	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Customer lists	$	903.5	$	(326.6)	$	576.9	$	927.8	$	(283.2)	$	644.6
Developed technology	372.3		(180.9)		191.4		381.3		(155.6)		225.7
Tradenames	49.6		(4.0)		45.6		5.9		(1.6)		4.3
Non-compete agreements	1.5		(1.4)		0.1		1.5		(1.3)		0.2
Total	$	1,326.9	$	(512.9)	$	814.0	$	1,316.5	$	(441.7)	$	874.8