XML 77 R51.htm IDEA: XBRL DOCUMENT
v3.20.4

ACQUISITIONS AND INVESTMENTS - Acquired Intangible Assets Fair Value and Weighted-Average Useful Life (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |
Fair value | $ 59.5 | $ 92.0
Weighted-average useful life | 11 years 8 months 12 days | 7 years 3 months 18 days
Customer relationships |  |
Business Acquisition [Line Items] |  |
Fair value | $ 10.6 | $ 17.1
Weighted-average useful life | 10 years | 9 years 10 months 24 days
Acquired software and technology |  |
Business Acquisition [Line Items] |  |
Fair value | $ 0.3 | $ 0.0
Weighted-average useful life | 3 years | 0 years
Proprietary database |  |
Business Acquisition [Line Items] |  |
Fair value | $ 48.2 | $ 68.6
Weighted-average useful life | 12 years 3 months 18 days | 6 years 10 months 24 days
Non-compete agreements |  |
Business Acquisition [Line Items] |  |
Fair value | $ 0.1 | $ 4.0
Weighted-average useful life | 5 years | 5 years
Trade names and other intangible assets |  |
Business Acquisition [Line Items] |  |
Fair value | $ 0.3 | $ 2.3
Weighted-average useful life | 2 years | 4 years 6 months

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
Name: | us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=121600890&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=efx_TechnologyAndSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DatabasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=efx_TradenamesAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |