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Contingencies (Details) - Ramirez v. Trans Union LLC [Member]	6 Months Ended
	Jun. 30, 2017 USD ($) plantiff
Loss Contingencies [Line Items]
Loss Contingency, Number of Plaintiffs | plantiff	8,185
Punitive Damages [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 0
Punitive Damages [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	8,100,000
Judicial Ruling [Member] | Statutory Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	8,100,000
Judicial Ruling [Member] | Statutory Damages [Member] | Per person [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	984.22
Judicial Ruling [Member] | Punitive Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	52,000,000
Judicial Ruling [Member] | Punitive Damages [Member] | Per person [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Awarded, Value	$ 6,353.08

X

- 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

Amount of damages awarded to the plaintiff in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

+ Details

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