Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011		Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010		Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Numerator:
Income (loss) from continuing operations attributable to CorLogic stockholders, net of tax	$ (6,161)	$ (2,970)	$ 40,041		$ 21,605	$ (7,879)	$ 49,064	$ (2,594)		$ 7,630	$ 52,515	$ 46,221	$ 45,981
Income (loss) from discontinued operations attributable to CoreLogic stockholders, net of tax	(15,999)	(104,220)	(8,556)	[1]	1,651	10,152	(142,479)	27,004	[2]	21,787	(127,124)	(83,536)	150,658
Loss on sale of discontinued operations, net of tax	0	0	0		0	(18,985)	0	0		0	0	(18,985)	0
Net (loss) income attributable to CoreLogic	$ (22,160)	$ (107,190)	$ 31,485		$ 23,256	$ (16,712)	$ (93,415)	$ 24,410		$ 29,417	$ (74,609)	$ (56,300)	$ 196,639
Denominator:
Weighted Average Shares For Basic Earnings Per Share	106,508	106,414	108,018		115,545	116,344	116,991	108,936		103,474	109,122	111,529	94,551
Effect of options and restricted stock											590	834	927
Denominator for diluted earnings per share	106,508	106,414	108,641		116,306	116,344	117,829	108,936		104,752	109,712	112,363	95,478
Earnings Per Share, Basic
Income (loss) from continuing operations attributable to CoreLogic stockholders, net of tax	$ (0.06)	$ (0.03)	$ 0.37		$ 0.19	$ (0.07)	$ 0.42	$ (0.02)		$ 0.07	$ 0.48	$ 0.41	$ 0.49
(Loss) income from discontinued operations attributable to CoreLogic stockholders, net of tax	$ (0.15)	$ (0.98)	$ (0.08)	[1]	$ 0.01	$ 0.09	$ (1.22)	$ 0.25	[2]	$ 0.21	$ (1.16)	$ (0.75)	$ 1.59
Loss on sale of discontinued operations, net of tax	$ 0.00	$ 0.00	$ 0.00		$ 0.00	$ (0.16)	$ 0.00	$ 0.00		$ 0.00	$ 0.00	$ (0.17)	$ 0.00
Net (loss) income attributable to CoreLogic	$ (0.21)	$ (1.01)	$ 0.29		$ 0.20	$ (0.14)	$ (0.80)	$ 0.23		$ 0.28	$ (0.68)	$ (0.51)	$ 2.08
Earnings Per Share, Diluted
Income from continuing operations attributable to CoreLogic stockholders, net of tax	$ (0.06)	$ (0.03)	$ 0.37		$ 0.19	$ (0.07)	$ 0.42	$ (0.02)		$ 0.07	$ 0.48	$ 0.41	$ 0.48
(Loss) income from discontinued operations attributable to CoreLogic stockholders, net of tax	$ (0.15)	$ (0.98)	$ (0.08)	[1]	$ 0.01	$ 0.09	$ (1.21)	$ 0.25	[2]	$ 0.21	$ (1.16)	$ (0.74)	$ 1.58
Loss on sale of discontinued operations, net of tax	$ 0.00	$ 0.00	$ 0.00		$ 0.00	$ (0.16)	$ 0.00	$ 0.00		$ 0.00	$ 0.00	$ (0.17)	$ 0.00
Net (loss) income attributable to CoreLogic	$ (0.21)	$ (1.01)	$ 0.29	[1]	$ 0.20	$ (0.14)	$ (0.79)	$ 0.23	[2]	$ 0.28	$ (0.68)	$ (0.50)	$ 2.06

[1] Amounts for the quarter ended June 30, 2011, have been revised to reflect financial statement revisions net of tax of $1.8 million of income, which impacted earnings per share by $0.02 per share on both a basic and diluted basis in the second quarter of 2011.

[2] ) Amounts for the quarter ended June 30, 2010, have been revised to reflect financial statement revisions net of tax of $2.8 million of income, which impacted earnings per share by $0.02 per share on both a basic and diluted basis in the second quarter of 2010.