XML 56 R44.htm IDEA: XBRL DOCUMENT
v3.4.0.3

COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Minimum |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Data processing, outsourcing services and other agreements, expiration year | 2016 |
Data processing, outsourcing services and other agreements, estimated aggregate contractual obligation |  | $ 55
Non cancelable contractual obligations within any annual period |  | $ 35
Maximum |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Data processing, outsourcing services and other agreements, expiration year | 2023 |
Debt instrument, maturity date | 1 year |

X
- Definition Commitments and Contingencies Disclosure [Line Items] + References No definition available. + Details
Name: | efx_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | efx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Non Cancelable Contractual Obligations + References No definition available. + Details
Name: | efx_NonCancelableContractualObligations
Namespace Prefix: | efx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Non Cancelable Contractual Obligations within any annual period in the next 5 years + References No definition available. + Details
Name: | efx_NonCancelableContractualObligationswithinanyannualperiod
Namespace Prefix: | efx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Service Agreements, Expiration Period + References No definition available. + Details
Name: | efx_ServiceAgreementsExpirationPeriod
Namespace Prefix: | efx_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |