Quarterly report pursuant to Section 13 or 15(d)

ACQUISITIONS AND INVESTMENTS (Pro Forma Financial Information) (Details)

v3.5.0.2
ACQUISITIONS AND INVESTMENTS (Pro Forma Financial Information) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Business Combinations [Abstract]        
Operating revenues $ 811.3 $ 678.1 $ 1,539.6 $ 1,329.9
Operating revenues, pro forma   748.1 1,577.7 1,465.5
Net income attributable to Equifax $ 130.9 111.0 233.0 199.3
Net income attributable to Equifax, pro forma   $ 113.0 $ 232.3 $ 202.4
Net income per share (basic) $ 1.10 $ 0.94 $ 1.96 $ 1.67
Net income per share (basic), pro forma   0.95 1.95 1.70
Net income per share (diluted) $ 1.08 0.92 1.93 1.64
Net income per share (diluted), pro forma   $ 0.93 $ 1.92 $ 1.67