Earnings Per Share (Details) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Numerator For Basic and Diluted Earnings Per Share
(Loss)/Income From Continuing Operations Attributable To Corelogic Stockholders	$ (2,970)	$ 49,064	$ 58,675	$ 54,100
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	(104,220)	(142,479)	(111,125)	(93,688)
Net loss attributable to Corelogic	$ (107,190)	$ (93,415)	$ (52,450)	$ (39,588)
Denominator For Basic and Diluted Earnings Per Share
Weighted Average Shares For Basic Earnings Per Share	106,414	116,991	109,993	109,800
Diluted Effect Of Stock Options And Restricted Stock Units	0	838	598	869
Weighted Average Shares For Diluted Earnings Per Share	106,414	117,829	110,591	110,669
Earnings Per Share, Basic
(Loss)/income from continuing operations attributable to Corelogic stockholders	$ (0.03)	$ 0.42	$ 0.53	$ 0.49
Loss from discontinued operations attributable to Corelogic stockholders, net of tax	$ (0.98)	$ (1.22)	$ (1.01)	$ (0.85)
Net loss attributable to Corelogic	$ (1.01)	$ (0.80)	$ (0.48)	$ (0.36)
Earnings Per Share, Diluted
(Loss)/income from continuing operations attributable to Corelogic stockholders	$ (0.03)	$ 0.42	$ 0.53	$ 0.49
Loss from discontinued operations attributable to Corelogic stockholders, net of tax	$ (0.98)	$ (1.22)	$ (1.01)	$ (0.85)
Net (loss)/income attributable to Corelogic	$ (1.01)	$ (0.80)	$ (0.48)	$ (0.36)