Goodwill and Other Intangible Assets, net (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of changes in the carrying amount of goodwill

The changes in the carrying amount of goodwill, net by segment follows:

(in millions)	CCM		CIT		CFT		CBF1		Total
Balance as of December 31, 2018	$	532.8	$	643.1	$	169.5	$	96.4	$	1,441.8
Goodwill acquired during year2	63.0		—		—		—		63.0
Currency translation and other	(0.5)		0.1		0.3		0.1		—
Balance as of March 31, 2019	$	595.3	$	643.2	$	169.8	$	96.5	$	1,504.8

^1.CBF goodwill, net is presented net of accumulated impairment losses of $130.0 million recorded in 2016. No other segments have incurred impairment losses.

^2.Refer to Note 4 for further information on goodwill resulting from recent acquisitions.

Summary of other intangible assets, net

A summary of the Company's other intangible assets, net follows:

	March 31, 2019						December 31, 2018
(in millions)	Acquired Cost		Accumulated Amortization		Net Book Value		Acquired Cost		Accumulated Amortization		Net Book Value
Assets subject to amortization:
Customer relationships	$	920.5	$	(304.4)	$	616.1	$	843.8	$	(287.7)	$	556.1
Technology and intellectual property	273.7		(137.2)		136.5		268.8		(129.3)		139.5
Trade names and other	72.7		(18.8)		53.9		45.4		(16.4)		29.0
Assets not subject to amortization:
Trade names	243.0		—		243.0		243.1		—		243.1
Other intangible assets, net	$	1,509.9	$	(460.4)	$	1,049.5	$	1,401.1	$	(433.4)	$	967.7

Summary of the net book values of other intangible assets, net by reportable segment

The net book values of other intangible assets, net by reportable segment follows:

(in millions)	March 31, 2019		December 31, 2018
Carlisle Construction Materials	$	381.1	$	285.3
Carlisle Interconnect Technologies	304.8		313.4
Carlisle Fluid Technologies	277.1		280.9
Carlisle Brake & Friction	85.0		86.6
Corporate	1.5		1.5
Total	$	1,049.5	$	967.7