Computer Software

9 Months Ended

Sep. 30, 2020

Computer software, net consists of the following (in millions):


	September 30, 2020		December 31, 2019
Internally developed software	$	976.4	$	808.2
Purchased software	85.9		78.9
Computer software	1,062.3		887.1
Accumulated amortization	(559.3)		(481.1)
Computer software, net	$	503.0	$	406.0

In the fourth quarter of 2019, we entered into agreements to acquire software in exchange for a combination of cash consideration and certain of our products and services. The software was acquired for $32.0 million, of which software valued at $25.5 million was received in the first quarter of 2020 and resulted in non-cash investing activity of $10.5 million for the nine months ended September 30, 2020.

Internally developed software and purchased software include assets acquired through business acquisitions. Refer to Note 2 — Business Acquisitions for further discussion.