Cover - shares	3 Months Ended
	Mar. 31, 2020	Apr. 28, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-13585
Entity Registrant Name	CORELOGIC, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-1068610
Entity Address, Address Line One	40 Pacifica
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92618
City Area Code	949
Local Phone Number	214-1000
Title of 12(b) Security	Common Stock, $0.00001 par value
Trading Symbol	CLGX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		79,411,399
Entity Central Index Key	0000036047
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false