Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES - Additional Information (Detail)

v2.3.0.15
COMMITMENTS AND CONTINGENCIES - Additional Information (Detail)
In Millions
9 Months Ended 9 Months Ended
Sep. 30, 2011
USD ($)
Sep. 30, 2011
CAD
Sep. 30, 2011
Maximum
Data Processing, Outsourcing Services And Other Agreements
Sep. 30, 2011
Minimum
Data Processing, Outsourcing Services And Other Agreements
Dec. 31, 2010
Minimum
Data Processing, Outsourcing Services And Other Agreements
USD ($)
Dec. 31, 2010
Data Processing, Outsourcing Services And Other Agreements
USD ($)
Dec. 31, 2010
Maximum
Agreement With Computer Sciences Corporation
USD ($)
Dec. 31, 2010
Minimum
Agreement With Computer Sciences Corporation
USD ($)
Sep. 30, 2011
Agreement With Computer Sciences Corporation
Sep. 30, 2011
Agreement With Computer Sciences Corporation
Open Option Contracts
Sep. 30, 2011
Guarantees and General Indemnifications
Commitments and Contingencies Disclosure [Line Items]                      
Service agreements expiration year     2016 2011              
Estimated aggregate minimum contractual obligation         $ 100            
Expected future year's minimum contractual obligation           40          
Service agreements expiration date Jul. 31, 2018
Agreement renewable period                 10 years    
Option to buy CSC credit reporting business exercise expected payment period                 The option exercise price will be determined by a third-party appraisal process and would be due in cash within 180 days after the exercise of the option.    
CSC option to sell its credit reporting business, option expiration year                   2013  
Estimate option exercise price             700 625      
Performance bonds and standby letters of credit remaining maturity date                     one year or less
Tax settlements with CRA 1.1 1.1                  
Net refund of deposit and accrued interest received related to tax matters with CRA $ 9.9 9.7                  
Tax examination years In 2003, the Canada Revenue Agency, or CRA, issued Notices of Reassessment, asserting that Acrofax, Inc., a wholly-owned Canadian subsidiary of Equifax, was liable for additional tax for the 1995 through 2000 tax years, related to certain intercompany capital contributions and loans. In 2003, the Canada Revenue Agency, or CRA, issued Notices of Reassessment, asserting that Acrofax, Inc., a wholly-owned Canadian subsidiary of Equifax, was liable for additional tax for the 1995 through 2000 tax years, related to certain intercompany capital contributions and loans.