Document and Entity Information - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Oct. 23, 2017
Document And Entity Information [Abstract]
Entity Registrant Name		CORELOGIC, INC.
Entity Central Index Key		0000036047
Current Fiscal Year End Date		--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category		Large Accelerated Filer
Document Type		10-Q
Document Period End Date		Sep. 30, 2017
Document Fiscal Year Focus		2017
Document Fiscal Period Focus		Q3
Amendment Flag		false
Entity Common Stock, Shares Outstanding			82,373,826