Software Development and Intellectual Property Licenses

9 Months Ended

Sep. 30, 2018

The following table summarizes the components of our capitalized software development costs (amounts in millions):



	At September 30, 2018		At December 31, 2017
Internally-developed software costs	$	356	$	270
Payments made to third-party software developers	166		183
Total software development costs	$	522	$	453

As of both September 30, 2018 and December 31, 2017, capitalized intellectual property licenses were not material.

Amortization of capitalized software development costs and intellectual property licenses was as follows (amounts in millions):



23	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2018		2017		2018		2017
Amortization of capitalized software development costs and intellectual property licenses	$	33	$	34	$	242	$	206