Stock-Based Compensation (Restricted Stock Units and PBRSU) (Details) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2012 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2013 Restricted Stock [Member]	Jun. 30, 2013 PBRSU [Member]		Jun. 30, 2012 PBRSU [Member]	May 19, 2011 CoreLogic 2011 Performance Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares available in award pool								18,000,000
Stock Compensation PBRSU percent of target	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate					0.00%
Number of Shares
Outstanding, Beginning of Period		1,381,000			1,151,000
Granted		664,116	718,315		397,000		345,348
Vested		(524,000)			(156,000)
Forfeited		(29,000)			(40,000)
Outstanding, End of Period		1,492,000			1,352,000
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Beginning Balance		$ 17.50			$ 17.21
Granted, Weighted Average Grant Date Fair Value		$ 25.94			$ 25.90
Vested, Weighted Average Grant Date Fair Value		$ 17.27			$ 18.18
Forfeited, Weighted Average Exercise Price		$ 21.58			$ 17.51
Weighted Average Grant Date Fair Value, Ending Balance		$ 21.25			$ 18.44
Restricted stock units, estimated grant date fair value		$ 17.2	$ 11.9		$ 10.3		$ 5.5
Total unrecognized compensation cost related to unvested awards				$ 22.9	$ 18.4
Nonvested awards, weighted average remaining period (in years)				2 years 2 months 23 days	1 year 11 months 13 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate					0.39%	[1]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate					29.97%	[2]
Share-based Compensation Arrangement, Fair Value, Average Shareholder Return [Abstract]					13.01%	[3]

[1] The risk-free interest rate for the periods within the contractual term of the options is based on the U.S. Treasury yield curve in effect at the time of the grant.

[2] The expected volatility and average total shareholder return is a measure of the amount by which a stock price has fluctuated or is expected to fluctuate based primarily on our and our peers' historical data.

[3] The average total shareholder return is the measure of performance of our stock over time.