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Pro Forma Financial Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||||||||||||
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| 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 | |||||||||||||||||||
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- Details
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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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| X | ||||||||||
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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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| X | ||||||||||
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- Definition
The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock 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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| X | ||||||||||
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- Definition
The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, per diluted share of common stock 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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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- Definition
The amount of net income (loss) from continuing operations 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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| X | ||||||||||
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- Definition
The amount of net income (loss) derived from continuing operations during 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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