Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data (Detail)

v2.4.0.6
Quarterly Financial Data (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
Quarterly Financial 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
Operating income 95.2 132.1 132.7 129.0 125.7 121.6 114.6 109.1 489.0 471.0 430.0
Consolidated income from continuing operations         74.5 69.3 37.1 59.3 280.8 240.2 243.3
Discontinued operations, net of tax         1.5         1.5 31.5
Consolidated net income 48.2 80.1 78.8 73.7 76.0 69.3 37.1 59.3 280.8 241.7 274.8
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
Basic earnings per common share*                      
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
Discontinued operations attributable to Equifax         $ 0.01 [1]         $ 0.01 $ 0.25
Basic earnings per common share* $ 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
Diluted earnings per common share                      
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
Discontinued operations attributable to Equifax         $ 0.01 [1]         $ 0.01 $ 0.25
Diluted earnings per common share* $ 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
[1] The sum of the quarterly EPS does not equal the annual EPS due to changes in the weighted-average shares between periods.