Annual report pursuant to Section 13 and 15(d)

QUARTERLY FINANCIAL DATA (Additional Information) (Detail)

v2.4.1.9
QUARTERLY FINANCIAL DATA (Additional Information) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2014
acquisition
Dec. 31, 2013
acquisition
Mar. 31, 2013
business_line
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]            
Number of business acquisitions 2us-gaap_NumberOfBusinessesAcquired 2us-gaap_NumberOfBusinessesAcquired        
Consideration $ 338.8efx_DisposalGroupIncludingDiscontinuedOperationConsideration          
Number of non-strategic business lines divested     2efx_NumberofBusinessLinesDivestedDiscontinuedOperations      
Proceeds From Divestiture Of Businesses     $ 47.5us-gaap_ProceedsFromDivestitureOfBusinesses $ 0.6us-gaap_ProceedsFromDivestitureOfBusinesses $ 47.5us-gaap_ProceedsFromDivestitureOfBusinesses $ 2.5us-gaap_ProceedsFromDivestitureOfBusinesses