Goodwill and Other Intangible Assets, net (Tables)

12 Months Ended

Dec. 31, 2020

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		CBF (1)		Total
Net balance as of December 31, 2018	$	532.8	$	643.1	$	169.5	$	96.4	$	1,441.8
Goodwill acquired during year (2), (3)	64.3		194.1		16.1		—		274.5
Measurement period adjustments	0.5		(1.9)		1.6		—		0.2
Currency translation and other	(0.5)		(0.1)		0.3		0.1		(0.2)
Net balance as of December 31, 2019	$	597.1	$	835.2	$	187.5	$	96.5	$	1,716.3
Goodwill acquired during year (2), (3)	12.5		2.8		2.8		—		18.1
Measurement period adjustments	—		(2.3)		—		—		(2.3)
Currency translation and other	3.4		(0.1)		2.8		—		6.1
Net balance as of December 31, 2020	$	613.0	$	835.6	$	193.1	$	96.5	$	1,738.2

(1)CBF goodwill is presented net of accumulated impairment losses of $130.0 million recorded in prior periods. No other segments have incurred impairment losses.

(2)See Note 3 for further information on goodwill resulting from recent acquisitions.

(3)In addition to the acquisitions disclosed in Note 3, the Company acquired one business for an aggregate purchase price of $3.2 million during 2020 and five businesses for an aggregate purchase price of $42.4 million during 2019.

Summary of other intangible assets, net

Other Intangible Assets, net

	December 31, 2020						December 31, 2019
(in millions)	Acquired Cost		Accumulated Amortization		Net Book Value		Acquired Cost		Accumulated Amortization		Net Book Value
Assets subject to amortization:
Customer relationships	$	1,060.6	$	(436.4)	$	624.2	$	1,054.4	$	(354.9)	$	699.5
Technology and intellectual property	313.6		(208.9)		104.7		304.1		(167.0)		137.1
Trade names and other	117.7		(50.4)		67.3		100.0		(38.7)		61.3
Assets not subject to amortization:
Trade names	238.6		—		238.6		242.7		—		242.7
Other intangible assets, net	$	1,730.5	$	(695.7)	$	1,034.8	$	1,701.2	$	(560.6)	$	1,140.6

Schedule of intangible assets subject to amortization

The remaining weighted-average amortization period of intangible assets subject to amortization as of December 31, 2020, follows (in years):

Customer relationships	9.1
Technology and intellectual property	5.8
Trade names and other	9.9
Total assets subject to amortization	8.7

Schedule of estimated future amortization expense

Intangible assets subject to amortization as of December 31, 2020, will be amortized as follows:

(in millions)	2021		2022		2023		2024		2025		Thereafter
Estimated future amortization expense	$	118.9	$	103.1	$	97.4	$	88.3	$	85.2	$	303.3

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

The net carrying values of the Company’s other intangible assets, net by reportable segment follows:

(in millions)	December 31, 2020		December 31, 2019
Carlisle Construction Materials	$	300.9	$	345.3
Carlisle Interconnect Technologies	384.8		441.0
Carlisle Fluid Technologies	261.3		272.8
Carlisle Brake & Friction	73.9		80.2
Corporate	13.9		1.3
Total	$	1,034.8	$	1,140.6