| Cover Page | Mar. 01, 2021 | Feb. 26, 2020 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | Mar. 1, 2021 | |
| Entity Registrant Name | CORELOGIC, INC. | |
| Entity Incorporation, State or Country Code | DE | |
| Entity File Number | 001-13585 | |
| 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 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Entity Central Index Key | 0000036047 | |
| Amendment Flag | false | |
| Entity Emerging Growth Company | false |
