Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY AND OTHER COMPREHENSIVE INCOME (Parenthetical)

v2.4.1.9
CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY AND OTHER COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Cash dividends, per share $ 1.00us-gaap_CommonStockDividendsPerShareCashPaid $ 0.88us-gaap_CommonStockDividendsPerShareCashPaid $ 0.72us-gaap_CommonStockDividendsPerShareCashPaid
Common stock authorized amount for future purchases $ 313.5us-gaap_StockRepurchaseProgramAuthorizedAmount    
Common Stock Repurchase Program      
Treasury stock purchased, per share $ 76.55us-gaap_TreasuryStockAcquiredAverageCostPerShare
/ us-gaap_ShareRepurchaseProgramAxis
= efx_CommonStockRepurchaseProgramMember
$ 59.74us-gaap_TreasuryStockAcquiredAverageCostPerShare
/ us-gaap_ShareRepurchaseProgramAxis
= efx_CommonStockRepurchaseProgramMember
$ 45.73us-gaap_TreasuryStockAcquiredAverageCostPerShare
/ us-gaap_ShareRepurchaseProgramAxis
= efx_CommonStockRepurchaseProgramMember
Accelerated Share Repurchase Program      
Accelerated Share Repurchase Program, Adjustment $ 11.5us-gaap_AcceleratedShareRepurchaseProgramAdjustment
/ us-gaap_ShareRepurchaseProgramAxis
= efx_AcceleratedShareRepurchaseProgramMember