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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) (USD $)
Share data in Millions, unless otherwise specified |
3 Months Ended | 0 Months Ended | 3 Months Ended | ||
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Mar. 31, 2015
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Feb. 04, 2015
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Oct. 24, 2014
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Feb. 04, 2015
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Dec. 31, 2014
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| Significant Accounting Policies [Line Items] | |||||
| Number of treasury shares repurchased | 1.00us-gaap_TreasuryStockSharesAcquired | ||||
| Fair value of long term debt | $ 1,300,000,000us-gaap_LongTermDebtFairValue | $ 1,300,000,000us-gaap_LongTermDebtFairValue | |||
| Carrying value of long term debt | 1,100,000,000efx_LongTermDebtCarryingAmount | 1,100,000,000efx_LongTermDebtCarryingAmount | |||
| Variable interest maximum exposure to loss | 16,600,000us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount | ||||
| Variable interest entity, ownership interest | 75.00%efx_VariableInterestEntityQuantitativeInformationOwnershipPercentage | ||||
| Investment in Boa Vista Servicos S.A. (BVS) | 27,300,000us-gaap_CostMethodInvestments | 38,200,000us-gaap_CostMethodInvestments | |||
| Boa Vista Servicos S.A. | |||||
| Significant Accounting Policies [Line Items] | |||||
| Percentage of interest acquired in Boa Vista Servicos S.A. (BVS) |
15.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = efx_BoaVistaServicosSociedadAnonimaMember |
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| Investment in Boa Vista Servicos S.A. (BVS) |
90,000,000us-gaap_CostMethodInvestments / us-gaap_BusinessAcquisitionAxis = efx_BoaVistaServicosSociedadAnonimaMember |
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| Accelerated Share Repurchase Program | |||||
| Significant Accounting Policies [Line Items] | |||||
| Accelerated Share Repurchases, Settlement (Payment) or Receipt |
115,000,000us-gaap_AcceleratedShareRepurchasesSettlementPaymentOrReceipt / us-gaap_ShareRepurchaseProgramAxis = efx_AcceleratedShareRepurchaseProgramMember |
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| Number of treasury shares repurchased |
0.02us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = efx_AcceleratedShareRepurchaseProgramMember |
1.40us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = efx_AcceleratedShareRepurchaseProgramMember |
1.42us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = efx_AcceleratedShareRepurchaseProgramMember |
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| Accelerated Share Repurchase Program, Adjustment Percent |
10.00%efx_AcceleratedShareRepurchaseProgramAdjustmentPercent / us-gaap_ShareRepurchaseProgramAxis = efx_AcceleratedShareRepurchaseProgramMember |
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| Accelerated Share Repurchase Program, Adjustment |
(11,500,000)us-gaap_AcceleratedShareRepurchaseProgramAdjustment / us-gaap_ShareRepurchaseProgramAxis = efx_AcceleratedShareRepurchaseProgramMember |
11,500,000us-gaap_AcceleratedShareRepurchaseProgramAdjustment / us-gaap_ShareRepurchaseProgramAxis = efx_AcceleratedShareRepurchaseProgramMember |
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| Other Current Assets | |||||
| Significant Accounting Policies [Line Items] | |||||
| Restricted Cash and Cash Equivalents |
47,100,000us-gaap_RestrictedCashAndCashEquivalents / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |
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| Other Current Liabilities | |||||
| Significant Accounting Policies [Line Items] | |||||
| Restricted Cash and Cash Equivalents |
$ 47,100,000us-gaap_RestrictedCashAndCashEquivalents / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentLiabilitiesMember |
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- Definition
Accelerated Share Repurchase Program, Adjustment Percent No definition available.
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- Definition
Long Term Debt, Carrying Amount No definition available.
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- Details
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- Definition
Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial in) the reporting entity (directly or indirectly) No definition available.
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- Definition
The amount needed to adjust previously recorded stockholders' equity balances to the actual aggregate amounts paid, whether in cash or other consideration, to acquire all of the shares purchased under an Accelerated Share Repurchase arrangement. No definition available.
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- Definition
Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of voting equity interests acquired at the acquisition date in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
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- Definition
The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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