Goodwill and Other Intangible Assets, net (Tables)

3 Months Ended

Mar. 31, 2021

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		Total
Balance as of December 31, 2020	$	613.0	$	835.6	$	193.1	$	1,641.7
Measurement period adjustments(1)	—		—		(0.2)		(0.2)
Currency translation and other	(1.5)		(0.4)		(0.6)		(2.5)
Balance as of March 31, 2021	$	611.5	$	835.2	$	192.3	$	1,639.0

(1)Refer to Note 3 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, 2021						December 31, 2020
(in millions)	Acquired Cost		Accumulated Amortization		Net Book Value		Acquired Cost		Accumulated Amortization		Net Book Value
Assets subject to amortization:
Customer relationships	$	998.1	$	(410.8)	$	587.3	$	1,000.7	$	(393.7)	$	607.0
Technology and intellectual property	260.9		(178.6)		82.3		263.0		(172.6)		90.4
Trade names and other	116.4		(53.4)		63.0		115.6		(48.7)		66.9
Assets not subject to amortization:
Trade names	195.8		—		195.8		196.6		—		196.6
Other intangible assets, net	$	1,571.2	$	(642.8)	$	928.4	$	1,575.9	$	(615.0)	$	960.9

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, 2021		December 31, 2020
Carlisle Construction Materials	$	288.0	$	300.9
Carlisle Interconnect Technologies	372.4		384.8
Carlisle Fluid Technologies	256.0		261.3
Corporate	12.0		13.9
Total	$	928.4	$	960.9