Guarantor Subsidiaries Income Statement (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating revenues	$ 358,101	$ 316,282
External cost of revenues	80,381	63,941
Salaries and benefits	137,742	140,996
Other operating expenses	65,260	61,732
Depreciation and amortization	29,491	23,037
(Loss)/Income From Continuing Operations	45,227	26,576
Total interest (expenses)/income, net	(14,142)	(7,550)
(Loss)/gain on investment and other, net	1,641	30,861
Provision/(benefit) for income taxes	13,238	33,799
Equity in earnings of affiliates, net of tax	9,470	6,334
Net income/(loss) from continuing operations	28,958	22,422
Loss/(income) from discontinued operations, net of tax	(8,967)	1,651
Loss from sale of discontinued operations, net of tax	(3,454)	0
Net income/(loss)	16,537	24,073
Less: Net (loss)/income attributable to noncontrolling interests	(94)	817
Net income/(loss) attributable to CoreLogic	16,631	23,256
Total other comprehensive income/(loss)	4,135	(14,097)
Comprehensive income/(loss) attributable to CoreLogic	20,766	9,159
Parent [Member]
Operating revenues	0	0
External cost of revenues	0	387
Salaries and benefits	22,378	23,473
Other operating expenses	(4,479)	(1,996)
Depreciation and amortization	925	927
(Loss)/Income From Continuing Operations	(18,824)	(22,791)
Total interest (expenses)/income, net	(13,492)	(7,976)
(Loss)/gain on investment and other, net	1,641	6,707
Provision/(benefit) for income taxes	(14,526)	4,584
Equity in earnings of affiliates, net of tax	0	0
Equity in earnings of subsidiary, net of tax	32,686	52,717
Net income/(loss) from continuing operations	16,537	24,073
Loss/(income) from discontinued operations, net of tax	0	0
Loss from sale of discontinued operations, net of tax	0	0
Net income/(loss)	16,537	24,073
Less: Net (loss)/income attributable to noncontrolling interests	(94)	817
Net income/(loss) attributable to CoreLogic	16,631	23,256
Total other comprehensive income/(loss)	4,135	(14,097)
Comprehensive income/(loss) attributable to CoreLogic	20,766	9,159
Guarantor Subsidiaries [Member]
Operating revenues	335,784	295,025
External cost of revenues	77,554	63,081
Salaries and benefits	104,659	105,071
Other operating expenses	64,392	60,101
Depreciation and amortization	22,767	21,254
(Loss)/Income From Continuing Operations	66,412	45,518
Total interest (expenses)/income, net	191	227
(Loss)/gain on investment and other, net	0	24,154
Provision/(benefit) for income taxes	28,405	27,436
Equity in earnings of affiliates, net of tax	9,166	6,334
Equity in earnings of subsidiary, net of tax	0	0
Net income/(loss) from continuing operations	47,364	48,797
Loss/(income) from discontinued operations, net of tax	(8,967)	1,651
Loss from sale of discontinued operations, net of tax	0	0
Net income/(loss)	38,397	50,448
Less: Net (loss)/income attributable to noncontrolling interests	0	0
Net income/(loss) attributable to CoreLogic	38,397	50,448
Total other comprehensive income/(loss)	0	(14,093)
Comprehensive income/(loss) attributable to CoreLogic	38,397	36,355
Non-Guarantor Subsidiaries [Member]
Operating revenues	22,317	21,257
External cost of revenues	2,827	473
Salaries and benefits	10,705	12,452
Other operating expenses	5,347	3,627
Depreciation and amortization	5,799	856
(Loss)/Income From Continuing Operations	(2,361)	3,849
Total interest (expenses)/income, net	(841)	199
(Loss)/gain on investment and other, net	0	0
Provision/(benefit) for income taxes	(641)	1,779
Equity in earnings of affiliates, net of tax	304	0
Equity in earnings of subsidiary, net of tax	0	0
Net income/(loss) from continuing operations	(2,257)	2,269
Loss/(income) from discontinued operations, net of tax	0	0
Loss from sale of discontinued operations, net of tax	(3,454)	0
Net income/(loss)	(5,711)	2,269
Less: Net (loss)/income attributable to noncontrolling interests	0	0
Net income/(loss) attributable to CoreLogic	(5,711)	2,269
Total other comprehensive income/(loss)	4,167	268
Comprehensive income/(loss) attributable to CoreLogic	(1,544)	2,537
Consolidation, Eliminations [Member]
Operating revenues	0	0
External cost of revenues	0	0
Salaries and benefits	0	0
Other operating expenses	0	0
Depreciation and amortization	0	0
(Loss)/Income From Continuing Operations	0	0
Total interest (expenses)/income, net	0	0
(Loss)/gain on investment and other, net	0	0
Provision/(benefit) for income taxes	0	0
Equity in earnings of affiliates, net of tax	0	0
Equity in earnings of subsidiary, net of tax	(32,686)	(52,717)
Net income/(loss) from continuing operations	(32,686)	(52,717)
Loss/(income) from discontinued operations, net of tax	0	0
Loss from sale of discontinued operations, net of tax	0	0
Net income/(loss)	(32,686)	(52,717)
Less: Net (loss)/income attributable to noncontrolling interests	0	0
Net income/(loss) attributable to CoreLogic	(32,686)	(52,717)
Total other comprehensive income/(loss)	(4,167)	13,825
Comprehensive income/(loss) attributable to CoreLogic	(36,853)	(38,892)
Total [Member]
Operating revenues	358,101	316,282
External cost of revenues	80,381	63,941
Salaries and benefits	137,742	140,996
Other operating expenses	65,260	61,732
Depreciation and amortization	29,491	23,037
(Loss)/Income From Continuing Operations	45,227	26,576
Total interest (expenses)/income, net	(14,142)	(7,550)
(Loss)/gain on investment and other, net	1,641	30,861
Provision/(benefit) for income taxes	13,238	33,799
Equity in earnings of affiliates, net of tax	9,470	6,334
Equity in earnings of subsidiary, net of tax	0	0
Net income/(loss) from continuing operations	28,958	22,422
Loss/(income) from discontinued operations, net of tax	(8,967)	1,651
Loss from sale of discontinued operations, net of tax	(3,454)	0
Net income/(loss)	16,537	24,073
Less: Net (loss)/income attributable to noncontrolling interests	(94)	817
Net income/(loss) attributable to CoreLogic	16,631	23,256
Total other comprehensive income/(loss)	4,135	(14,097)
Comprehensive income/(loss) attributable to CoreLogic	$ 20,766	$ 9,159