Annual report pursuant to Section 13 and 15(d)

Pro Forma Financial Information (Detail)

v2.4.0.6
Pro Forma Financial Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Business Acquisition Proforma Information [Line Items]                      
Operating revenue $ 558.1 $ 543.9 $ 535.8 $ 522.7 $ 509.7 $ 490.4 $ 487.1 $ 472.6 $ 2,160.5 $ 1,959.8 $ 1,859.5
Net income attributable to Equifax 46.3 77.9 76.4 71.5 74.4 66.7 34.5 57.3 272.1 232.9 266.7
Net income from continuing operations attributable to Equifax         $ 0.61 [1] $ 0.55 [1] $ 0.28 [1] $ 0.47 [1] $ 2.27 $ 1.90 $ 1.89
Net income from continuing operations attributable to Equifax         $ 0.60 [1] $ 0.54 [1] $ 0.28 [1] $ 0.46 [1] $ 2.22 $ 1.87 $ 1.86
Net income attributable to Equifax $ 0.39 [1] $ 0.65 [1] $ 0.64 [1] $ 0.60 [1] $ 0.62 [1] $ 0.55 [1] $ 0.28 [1] $ 0.47 [1] $ 2.27 $ 1.91 $ 2.14
Net income attributable to Equifax $ 0.38 [1] $ 0.64 [1] $ 0.62 [1] $ 0.58 [1] $ 0.61 [1] $ 0.54 [1] $ 0.28 [1] $ 0.46 [1] $ 2.22 $ 1.88 $ 2.11
Business Acquisition, Pro Forma Revenue                 2,283.6 2,070.2  
Business Acquisition, Pro Forma Net Income (Loss)                 $ 309.9 $ 263.6  
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Basic                 $ 2.58 $ 2.15  
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted                 $ 2.53 $ 2.12  
Business Acquisition, Pro Forma Earnings Per Share, Basic                 $ 2.58 $ 2.16  
Business Acquisition, Pro Forma Earnings Per Share, Diluted                 $ 2.53 $ 2.13  
[1] The sum of the quarterly EPS does not equal the annual EPS due to changes in the weighted-average shares between periods.