Stock-Based Compensation (Options) (Details) (USD $)			9 Months Ended
	Sep. 30, 2012	May 19, 2011 Corelogic 2006 Incentive Plan [Member]	Sep. 30, 2012 Stock Options [Member] years Installments	Sep. 30, 2011 Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
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			(552,000)
Options canceled			(667,000)
Options outstanding, ending balance			3,963,000
Options vested and expected to vest, outstanding			3,915,000
Options exercisable, end of period			2,440,000
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			$ 17.92
Options canceled, Weighted Average Exercise Price			$ 21.49
Options outstanding, Weighted Average Exercise Price, ending balance			$ 20.27
Options vested and expected to vest, Weighted Average Exercise Price			$ 20.32
Options exercisable, Weighted Average Exercise Price, end of period			$ 22.31
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)			3.9
Aggregate Intrinsic Value
Options outstanding, Aggregate Intrinsic Value			$ 24,950,000
Options vested and expected to vest, Aggregate Intrinsic Value			24,462,000
Options exercisable, Aggregate Intrinsic Value			10,458,000
Unrecognized Compensation Cost
Total unrecognized compensation cost related to unvested awards			6,700,000
Nonvested awards, weighted average remaining period (in years)			2.0
Intrinsic value of stock options exercised			$ 2,700,000	$ 400,000
Employee Stock Purchase Plan
Employee Stock Purchase Plan Percent of Stock Price At Closing Date	85.00%
Number of equal annual installments in which stock options will vest			3
Award vesting period			10 years