Goodwill and Acquired Intangible Assets

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Acquired Intangible Assets

Note 7 - Goodwill and Acquired Intangible Assets

Intangible assets consisted of the following as of September 30, 2020 (unaudited):

(in millions)	Gross Carrying Amount		Accumulated Amortization		Net		Weighted Average Amortization Period in Years
Intangible assets subject to amortization:
Customer relationships	$	268.6	$	(48.0)	$	220.6	15.0
Acquired technology	163.9		(79.2)		84.7		6.0
Brand portfolio	4.6		(2.9)		1.7		9.7
Net intangible assets subject to amortization	$	437.1	$	(130.1)	$	307.0
Intangible assets not subject to amortization
Pre-Acquisition ZI brand portfolio	$	33.0	$	—	$	33.0
Goodwill	$	966.8	$	—	$	966.8

Amortization expense was $10.1 million and $11.2 million for the three months ended September 30, 2020 and 2019, respectively. Amortization expense was $30.6 million and $32.5 million for the nine months ended September 30, 2020 and 2019, respectively.

Goodwill, as of September 30, 2020, was $966.8 million, and there have been no changes since December 31, 2019.

Based on the results of the Company’s impairment assessment, the Company did not recognize any impairment of goodwill during the nine months ended September 30, 2020 or September 30, 2019.