Stock-Based Compensation Options (Details) (USD $)	3 Months Ended		3 Months Ended
	Mar. 31, 2012	May 19, 2011 Corelogic 2006 Incentive Plan [Member]	Mar. 31, 2012 Stock Options [Member] years	Mar. 31, 2011 Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Available In award Pool		18,000,000
Number of Shares
Options Outstanding Beginning Balance			4,601,000
Options Granted			581,000
Options Exercised			(14,000)
Options Canceled			(524,000)
Options Outstanding Ending Balance			4,644,000
Options Vested and Expected to Vest, Outstanding			4,575,000
Options Exercisable Shares March 31, 2012			2,747,000
Weighted Average Exercise Price
Options Outstanding, Weighted Average Exercise Price, Beginning Balance			$ 20.78
Options Granted, Weighted Average Exercise Price			$ 16.00
Options Exercised, Weighted Average Exercise Price			$ 13.54
Options Canceled, Weighted Average Exercise Price			$ 19.99
Options Outstanding, Weighted Average Exercise Price Ending Balnce			$ 20.08
Options Vested and Expected to Vest, Weighted Average Exercise Price			$ 20.13
Options Exercisable, Weighted Average Exercise Price, End Of Period			$ 22.08
Weighted Average Remaining Contractual Term
Options Outstanding, Weighted Average Remaining Contractual Term (in years)			5.7
Options, Vested and Expected to Vest, Weighted Average Remaining Contractual Term (in years)			5.6
Option Exercisable, Weighted Average Remaining Contractual Term (in years)			3.4
Aggregate Intrinsic Value
Options Outstanding, Intrinsic Value			$ 1,652,000
Options, Vested and Expected to Vest, Aggregate Intrinsic Value			1,616,000
Options Exercisable, Intrinsic Value			755,000
Unrecognized Compensation Cost
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	9,000,000
Nonvested Stock Options Weighted Average Remaining Period (in years)	2.5
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value			$ 100,000	$ 300,000
Employee Stock Purchase Plan
Employee Stock Purchase Plan Percent of Stock Price At Closing Date	85.00%