v3.20.2

Goodwill and Acquired Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2020

Acquired Finite-Lived Intangible Assets [Line Items]

Intangible Assets

Intangible assets consisted of the following as of June 30, 2020 (in millions):

			Gross Carrying Amount						Accumulated Amortization						Net						Weighted Average Amortization Period in Years
Intangible assets subject to amortization:
Customer relationships			$	268.6					$	(43.5)					$	225.1					15.0
Acquired technology			163.9						(73.7)						90.2						6.0
Brand portfolio			4.6						(2.7)						1.9						9.7
Net intangible assets subject to amortization			$	437.1					$	(119.9)					$	317.2
Intangible assets not subject to amortization
Pre-Acquisition ZI brand portfolio			$	33.0					$	—					$	33.0
Goodwill			$	966.8					$	—					$	966.8

DiscoverOrg Holdings

Acquired Finite-Lived Intangible Assets [Line Items]

Intangible Assets

Intangible assets consisted of the following as of December 31, 2019 (in millions):

			Gross Carrying Amount						Accumulated Amortization						Net						Weighted Average Amortization Period in Years
Intangible assets subject to amortization:
Customer relationships			$	268.6					$	(34.5)					$	234.1					15
Acquired technology			163.9						(62.5)						101.4						6
Brand portfolio			4.6						(2.5)						2.1						9.7
Net intangible assets subject to amortization			$	437.1					$	(99.5)					$	337.6
Intangible assets not subject to amortization
Pre-Acquisition ZI brand portfolio															$	33.0
Goodwill															$	966.8

Intangible assets consisted of the following as of December 31, 2018 (in millions):

			2018
			Gross Carrying Amount						Accumulated Amortization						Net						Weighted Average Amortization Period in Years
Intangible assets subject to amortization:
Customer relationships			$	95.6					$	(17.4)					$	78.2					14.9
Acquired technology			45.4						(37.5)						7.9						3.9
Brand portfolio			4.6						(2.0)						2.6						9.7
Net intangible assets subject to amortization			$	145.6					$	(56.9)					$	88.7
Intangible assets not subject to amortization
Goodwill															$	445.7

Future Amortization Expense

Future amortization expense for intangible assets as of December 31, 2019 is as follows (in millions):

			Estimate Amortization Expense
For years ended December 31,
2020			$	40.8
2021			$	40.8
2022			$	40.7
2023			$	30.4
2024			$	28.9

A summary of estimated future amortization expense is as follows (in millions):

For the year ending December 31,			2019			$	12.3
			2020			7.5
			2021			7.5
			2022			7.5
			2023			7.4
			Thereafter			46.5
						$	88.7

Changes to Goodwill

The following summarizes changes to the Company’s goodwill (in millions):

Balance at January 1, 2018			$	439.7
Acquisition of NeverBounce			6.0
Balance at December 31, 2018			445.7
Acquisition of ZoomInfo			514.8
Acquisition of Komiko			6.3
Balance at December 31, 2019			$	966.8

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267

+ Details

Name:	us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

+ Details

Name:	us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

Name:	us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=zi_DiscoverOrgHoldingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: