XML 34 R36.htm IDEA: XBRL DOCUMENT
v3.3.0.814

DEBT (Debt Outstanding - Parenthetical) (Detail) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Debt Outstanding [Line Items] |  |
Debt, maturity date | 2017-12 |
Notes, 6.30%, due July 2017 |  |
Debt Outstanding [Line Items] |  |
Debt, interest rate | 6.30% | 6.30%
Debt, maturity date | 2017-07 | 2017-07
Notes, 3.30%, due Dec 2022 |  |
Debt Outstanding [Line Items] |  |
Debt, interest rate | 3.30% | 3.30%
Debt, maturity date | 2022-12 | 2022-12
Debentures, 6.90%, due July 2028 |  |
Debt Outstanding [Line Items] |  |
Debt, interest rate | 6.90% | 6.90%
Debt, maturity date | 2028-07 | 2028-07
Notes, 7.00%, due July 2037 |  |
Debt Outstanding [Line Items] |  |
Debt, interest rate | 7.00% | 7.00%
Debt, maturity date | 2037-07 | 2037-07

X
- Definition Debt Instrument, Maturity, Month and Year + References No definition available. + Details
Name: | efx_DebtInstrumentMaturityMonthAndYear
Namespace Prefix: | efx_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Outstanding [Line Items] + References No definition available. + Details
Name: | efx_DebtOutstandingLineItems
Namespace Prefix: | efx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=efx_NotesSixPointThreeZeroPercentDueJulyTwentySeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=efx_NotesThreePointThreeZeroDueDecemberTwoThousandTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=efx_DebenturesSixPointNineZeroPercentDueJulyTwentyTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=efx_NotesSevenPointZeroPercentDueJulyTwentyThirtySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |