Equifax Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

ACQUISITIONS AND INVESTMENTS (Acquired Intangible Assets Fair Value and Weighted-Average Useful Life) (Details)

v3.8.0.1

ACQUISITIONS AND INVESTMENTS (Acquired Intangible Assets Fair Value and Weighted-Average Useful Life) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Fair value	$ 51.0	$ 681.0
Weighted-average useful life	9 years 6 months	12 years 10 months 24 days
Customer relationships
Business Acquisition [Line Items]
Fair value	$ 42.7	$ 171.3
Weighted-average useful life	10 years 2 months	14 years 10 months 24 days
Acquired software and technology
Business Acquisition [Line Items]
Fair value	$ 6.5	$ 106.3
Weighted-average useful life	6 years 6 months	4 years 2 months 12 days
Purchased data files
Business Acquisition [Line Items]
Fair value	$ 0.0	$ 387.5
Weighted-average useful life		14 years 9 months 18 days
Non-compete agreements
Business Acquisition [Line Items]
Fair value	0.0	$ 5.4
Weighted-average useful life		2 years 1 month 6 days
Trade names and other intangible assets
Business Acquisition [Line Items]
Fair value	$ 1.8	$ 10.5
Weighted-average useful life	2 years 11 months	1 year

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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