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Goodwill and Intangible Assets, net
 3 Months Ended
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, net Intangible Assets and Software, net
The following table presents certain information regarding our intangible assets and software:
Gross
Carrying
Amount		Accumulated
Amortization		Net
Balance
Balance as of March 31, 2020
Intellectual property$34.3  $(32.5) $1.8  
Customer relationships23.2  (18.3) 4.9  
Software17.9  (11.2) 6.7  
Licenses5.1  (2.6) 2.5  
Brand names3.8  (3.2) 0.6  
Total intangible assets and software$84.3  $(67.8) $16.5  
Balance as of December 31, 2019
Intellectual property$35.4  $(33.4) $2.0  
Customer relationships23.2  (18.0) 5.2  
Software16.8  (10.3) 6.5  
Licenses5.1  (2.4) 2.7  
Brand names3.9  (3.3) 0.6  
Total intangible assets and software$84.4  $(67.4) $17.0  
The following reflects amortization expense related to intangible assets and software included within depreciation and amortization:
Three Months Ended
March 31,
20202019
Amortization expense
$1.7  $1.6