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Goodwill and Other Intangible Assets, net
 6 Months Ended
Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets, net Goodwill and Other Intangible Assets, net
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(0.9)0.1 (0.5)(1.3)
Balance as of June 30, 2021$612.1 $835.7 $192.4 $1,640.2 
(1)Refer to Note 3 for further information on goodwill resulting from recent acquisitions.
Other Intangible Assets, net
A summary of the Company's other intangible assets, net follows:
June 30, 2021December 31, 2020
(in millions)
Acquired
Cost
Accumulated
Amortization
Net Book Value
Acquired
Cost
Accumulated
Amortization
Net Book Value
Assets subject to amortization:
Customer relationships$998.9 $(429.4)$569.5 $1,000.7 $(393.7)$607.0 
Technology and intellectual property
261.2 (186.0)75.2 263.0 (172.6)90.4 
Trade names and other119.9 (56.8)63.1 115.6 (48.7)66.9 
Assets not subject to amortization:
Trade names196.1 — 196.1 196.6 — 196.6 
Other intangible assets, net$1,576.1 $(672.2)$903.9 $1,575.9 $(615.0)$960.9 
The net book values of other intangible assets, net by reportable segment follows:
(in millions)
June 30,
2021		December 31,
2020
Carlisle Construction Materials$279.2 $300.9 
Carlisle Interconnect Technologies360.4 384.8 
Carlisle Fluid Technologies252.6 261.3 
Corporate11.7 13.9 
Total$903.9 $960.9