Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES - Additional Information (Detail)

v2.4.1.9
COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Minimum    
Commitments and Contingencies Disclosure [Line Items]    
Data Processing, Outsourcing Services And Other Agreements, expiration year 2015  
Data Processing, Outsourcing Services And Other Agreements, estimated aggregate contractual obligation $ 100efx_NonCancelableContractualObligations
/ us-gaap_RangeAxis
= us-gaap_MinimumMember 		$ 60efx_NonCancelableContractualObligations
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Non Cancelable Contractual Obligations within any annual period   $ 40efx_NonCancelableContractualObligationswithinanyannualperiod
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Maximum    
Commitments and Contingencies Disclosure [Line Items]    
Data Processing, Outsourcing Services And Other Agreements, expiration year 2023