Share-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	May 01, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan, percent of stock price at closing date	85.00%
Stock-based compensation expense	$ 8,085,000	$ 9,892,000
Cost of Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 500,000	$ 800,000
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted during the period (in units)	552,262	584,552
Estimated grant-date fair value	$ 17,600,000	$ 21,100,000
Award vesting period in years	3 years
Unrecognized compensation cost	$ 32,600,000
Period of recognition for unrecognized compensation cost in years	2 years 2 months 12 days
Stock-based compensation expense	$ 5,811,000	$ 7,312,000
PBRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted during the period (in units)	292,853	203,464
Estimated grant-date fair value	$ 11,400,000	$ 7,500,000
Unrecognized compensation cost	$ 21,200,000
Period of recognition for unrecognized compensation cost in years	2 years
Stock-based compensation expense	$ 1,575,000	1,915,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	0
Intrinsic value of options exercised	300,000	100,000
Stock-based compensation expense	$ 0	$ 0
CoreLogic 2018 Performance Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized			15,139,084

Employee Stock Purchase Plan Percent of Stock Price At Closing Date

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.

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