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Software Development and Intellectual Property Licenses
9 Months Ended
Sep. 30, 2020
Software Development Costs and Intellectual Property Licenses  
Software Development and Intellectual Property Licenses Software Development and Intellectual Property Licenses
 
The following table summarizes the components of our capitalized software development costs (amounts in millions):

At September 30, 2020At December 31, 2019
Internally-developed software costs$510 $345 
Payments made to third-party software developers33 31 
Total software development costs$543 $376 
 
As of both September 30, 2020 and December 31, 2019, capitalized intellectual property licenses were not material.

Amortization of capitalized software development costs and intellectual property licenses was as follows (amounts in millions):
For the Three Months Ended September 30,For the Nine Months Ended September 30,
 2020201920202019
Amortization of capitalized software development costs and intellectual property licenses$37 $11 $149 $175