ACQUISITIONS AND INVESTMENTS - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
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| Business Combinations [Abstract] | ||||
| Operating revenues | $ 834.8 | $ 804.1 | $ 2,523.8 | $ 2,343.8 |
| Operating revenues, pro forma | 2,383.2 | |||
| Net income attributable to Equifax | $ 96.3 | $ 132.8 | $ 415.0 | 365.8 |
| Net income attributable to Equifax, pro forma | $ 368.4 | |||
| Net income per share (basic) (in dollars per share) | $ 0.80 | $ 1.11 | $ 3.45 | $ 3.07 |
| Net income per share (basic), pro forma (in dollars per share) | 3.09 | |||
| Net income per share (diluted) (in dollars per share) | $ 0.79 | $ 1.09 | $ 3.41 | 3.02 |
| Net income per share (diluted), pro forma (in dollars per share) | $ 3.04 | |||
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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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