Description of the Company	12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Company	Description of the Company We are a leading global property information, analytics and data-enabled services provider operating in North America, Western Europe and Asia Pacific. Our combined data from public, contributory and proprietary sources provides detailed coverage of property, mortgages and other encumbrances, property risk and replacement cost, consumer credit, tenancy, location, hazard risk and related performance information. We have more than one million users who rely on our data and predictive decision analytics to reduce risk, enhance transparency and improve the performance of their businesses. With our data as a foundation, we have built strong analytics capabilities and a variety of value-added business services to meet our clients’ needs for mortgage and automotive credit reporting, property tax, property valuation, tenancy, hazard risk, property risk and replacement cost, flood plain location determination and other geospatial data, analytics and related services. Clients rely on us to help identify and manage growth opportunities, improve performance and mitigate risk. We are also a party to various joint ventures under which we share control of the management of the operations with the other partner. We became a stand-alone public company on June 1, 2010 when we completed a transaction in which we separated from the financial services businesses of our predecessor company, The First American Corporation (referred to as the "Separation"). The First American Corporation was incorporated in California in 1894, and as part of the Separation, we reincorporated in Delaware on June 1, 2010, changed our name to CoreLogic, Inc. and began trading on the New York Stock Exchange under the symbol “CLGX.” As used herein, the terms "CoreLogic," the "Company," "we," "our" and "us" refer to CoreLogic, Inc. and our consolidated subsidiaries, except where it is clear that the terms mean only CoreLogic, Inc. and not our subsidiaries. Reporting Segments In December 2017, we renamed our Property Intelligence segment to Property Intelligence & Risk Management Solutions ("PIRM") and renamed our Risk Management and Work Flow segment to Underwriting & Workflow Solutions ("UWS"). As part of this resegmentation, we transferred our valuation solution business from our PIRM segment to our UWS segment and transferred our rental property solutions business from our UWS segment to our PIRM segment. The changes above reflect, and result from, corresponding changes in our management structure, go-to-market strategy, and internal reporting. As a result of these actions, we have organized our reportable segments into the following two segments: PIRM and UWS. All segment reporting and disclosures presented herein reflect these changes. See Note 18 - Segment Financial Information for further discussion. Separation Transaction We became a stand-alone public company on June 1, 2010, when we completed the Separation under which we separated the financial services businesses into a new, publicly-traded, New York Stock Exchange-listed company called First American Financial Corporation (“FAFC”) through a distribution (the “Distribution”) of all of the outstanding shares of FAFC to the holders of our common shares, par value $1.00 per share, as of May 26, 2010. After the Distribution, we retained the information solutions businesses as further described above. To effect the Separation, we entered into a Separation and Distribution Agreement (the “Separation and Distribution Agreement”) that governs the rights and obligations of us and FAFC regarding the Distribution. It also governs the on-going relationship between us and FAFC subsequent to the completion of the Separation and provides for the allocation of assets and liabilities between us and FAFC. In addition, we also entered into a Tax Sharing Agreement (the “Tax Sharing Agreement”). While we are a party to the Separation and Distribution Agreement and various other agreements relating to the Separation, we have determined that we have no material continuing involvement in the operations of FAFC.

Description of the Company

We are a leading global property information, analytics and data-enabled services provider operating in North America, Western Europe and Asia Pacific. Our combined data from public, contributory and proprietary sources provides detailed coverage of property, mortgages and other encumbrances, property risk and replacement cost, consumer credit, tenancy, location, hazard risk and related performance information. We have more than one million users who rely on our data and predictive decision analytics to reduce risk, enhance transparency and improve the performance of their businesses. With our data as a foundation, we have built strong analytics capabilities and a variety of value-added business services to meet our clients’ needs for mortgage and automotive credit reporting, property tax, property valuation, tenancy, hazard risk, property risk and replacement cost, flood plain location determination and other geospatial data, analytics and related services. Clients rely on us to help identify and manage growth opportunities, improve performance and mitigate risk. We are also a party to various joint ventures under which we share control of the management of the operations with the other partner.

We became a stand-alone public company on June 1, 2010 when we completed a transaction in which we separated from the financial services businesses of our predecessor company, The First American Corporation (referred to as the "Separation"). The First American Corporation was incorporated in California in 1894, and as part of the Separation, we reincorporated in Delaware on June 1, 2010, changed our name to CoreLogic, Inc. and began trading on the New York Stock Exchange under the symbol “CLGX.” As used herein, the terms "CoreLogic," the "Company," "we," "our" and "us" refer to CoreLogic, Inc. and our consolidated subsidiaries, except where it is clear that the terms mean only CoreLogic, Inc. and not our subsidiaries.

Reporting Segments

In December 2017, we renamed our Property Intelligence segment to Property Intelligence & Risk Management Solutions ("PIRM") and renamed our Risk Management and Work Flow segment to Underwriting & Workflow Solutions ("UWS"). As part of this resegmentation, we transferred our valuation solution business from our PIRM segment to our UWS segment and transferred our rental property solutions business from our UWS segment to our PIRM segment. The changes above reflect, and result from, corresponding changes in our management structure, go-to-market strategy, and internal reporting. As a result of these actions, we have organized our reportable segments into the following two segments: PIRM and UWS. All segment reporting and disclosures presented herein reflect these changes. See Note 18 - Segment Financial Information for further discussion.

Separation Transaction

We became a stand-alone public company on June 1, 2010, when we completed the Separation under which we separated the financial services businesses into a new, publicly-traded, New York Stock Exchange-listed company called First American Financial Corporation (“FAFC”) through a distribution (the “Distribution”) of all of the outstanding shares of FAFC to the holders of our common shares, par value $1.00 per share, as of May 26, 2010. After the Distribution, we retained the information solutions businesses as further described above.

To effect the Separation, we entered into a Separation and Distribution Agreement (the “Separation and Distribution Agreement”) that governs the rights and obligations of us and FAFC regarding the Distribution. It also governs the on-going relationship between us and FAFC subsequent to the completion of the Separation and provides for the allocation of assets and liabilities between us and FAFC. In addition, we also entered into a Tax Sharing Agreement (the “Tax Sharing Agreement”).

While we are a party to the Separation and Distribution Agreement and various other agreements relating to the Separation, we have determined that we have no material continuing involvement in the operations of FAFC.