Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Acquisitions and Dispositions - Narrative (Details) - CareerBuilder	Aug. 01, 2016	Mar. 31, 2016
Aurico Inc.
Business Acquisition [Line Items]
Ownership interest acquired (as a percent)		100.00%
Subsequent Event \| DealerRater
Business Acquisition [Line Items]
Ownership interest acquired (as a percent)	100.00%