Guarantor Subsidiaries (Income Statement) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Revenue	$ 397,168	$ 358,101
Cost of services (excluding depreciation and amortization shown below)	216,027	197,665
Selling, General and Administrative Expense	91,053	85,718
Depreciation, Depletion and Amortization	34,814	29,491
(Loss)/income from continuing operations	55,274	45,227
Interest Income (Expense), Net	(11,604)	(14,142)
Gain/(loss) on investment and other, net	2,799	1,641
(Benefit)/provision for income taxes	21,058	13,238
Equity in earnings of affiliates, net of tax	8,787	9,470
Net income/(loss) from continuing operations	34,198	28,958
Loss from discontinued operations, net of tax	(656)	(8,967)
Gain on sale of discontinued operations, net of tax	0	(3,454)
Net income/(loss)	33,542	16,537
Less: Net loss attributable to noncontrolling interests	(26)	(94)
Net income/(loss) attributable to CoreLogic	33,568	16,631
Total other comprehensive income/(loss)	(538)	4,135
Comprehensive income/(loss) attributable to CoreLogic	33,030	20,766
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	(26)	(94)
Parent [Member]
Operating Revenue	0	0
Intercompany Revenue	0	0
Cost of services (excluding depreciation and amortization shown below)	0	0
Selling, General and Administrative Expense	16,532	17,900
Depreciation, Depletion and Amortization	850	925
(Loss)/income from continuing operations	(17,382)	(18,825)
Interest Expense Net		(13,492)
Interest Income (Expense), Net	(11,696)
Gain/(loss) on investment and other, net	1,340	1,641
(Benefit)/provision for income taxes	(7,830)	(14,527)
Equity in earnings of affiliates, net of tax	0	0
Equity in earnings of subsidiary, net of tax	53,476	32,780
Net income/(loss) from continuing operations	33,568	16,631
Loss from discontinued operations, net of tax	0	0
Gain on sale of discontinued operations, net of tax		0
Net income/(loss)	33,568	16,631
Less: Net loss attributable to noncontrolling interests	0	0
Net income/(loss) attributable to CoreLogic	33,568	16,631
Total other comprehensive income/(loss)	(538)	4,135
Comprehensive income/(loss) attributable to CoreLogic	33,030	20,766
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0
Guarantor Subsidiaries [Member]
Operating Revenue	374,094	335,975
Intercompany Revenue	0	0
Cost of services (excluding depreciation and amortization shown below)	206,468	188,791
Selling, General and Administrative Expense	66,286	58,005
Depreciation, Depletion and Amortization	28,195	22,767
(Loss)/income from continuing operations	73,145	66,412
Interest Expense Net		191
Interest Income (Expense), Net	(66)
Gain/(loss) on investment and other, net	1,459	0
(Benefit)/provision for income taxes	28,421	28,406
Equity in earnings of affiliates, net of tax	8,776	9,166
Equity in earnings of subsidiary, net of tax	0	0
Net income/(loss) from continuing operations	54,893	47,363
Loss from discontinued operations, net of tax	(656)	(8,967)
Gain on sale of discontinued operations, net of tax		(3,454)
Net income/(loss)	54,237	34,942
Less: Net loss attributable to noncontrolling interests	0	0
Net income/(loss) attributable to CoreLogic	54,237	34,942
Total other comprehensive income/(loss)	0	0
Comprehensive income/(loss) attributable to CoreLogic	54,237	34,942
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0
Non-Guarantor Subsidiaries [Member]
Operating Revenue	23,074	22,126
Intercompany Revenue	167	191
Cost of services (excluding depreciation and amortization shown below)	9,726	9,065
Selling, General and Administrative Expense	8,235	9,813
Depreciation, Depletion and Amortization	5,769	5,799
(Loss)/income from continuing operations	(489)	(2,360)
Interest Expense Net		(841)
Interest Income (Expense), Net	158
Gain/(loss) on investment and other, net	0	0
(Benefit)/provision for income taxes	467	(641)
Equity in earnings of affiliates, net of tax	11	304
Equity in earnings of subsidiary, net of tax	0	0
Net income/(loss) from continuing operations	(787)	(2,256)
Loss from discontinued operations, net of tax	0	0
Gain on sale of discontinued operations, net of tax		0
Net income/(loss)	(787)	(2,256)
Less: Net loss attributable to noncontrolling interests	(26)	(94)
Net income/(loss) attributable to CoreLogic	(761)	(2,162)
Total other comprehensive income/(loss)	933	4,167
Comprehensive income/(loss) attributable to CoreLogic	172	2,005
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		(94)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(26)
Consolidation, Eliminations [Member]
Operating Revenue	0	0
Intercompany Revenue	(167)	(191)
Cost of services (excluding depreciation and amortization shown below)	(167)	(191)
Selling, General and Administrative Expense	0	0
Depreciation, Depletion and Amortization	0	0
(Loss)/income from continuing operations	0	0
Interest Expense Net		0
Interest Income (Expense), Net	0
Gain/(loss) on investment and other, net	0	0
(Benefit)/provision for income taxes	0	0
Equity in earnings of affiliates, net of tax	0	0
Equity in earnings of subsidiary, net of tax	(53,476)	(32,780)
Net income/(loss) from continuing operations	(53,476)	(32,780)
Loss from discontinued operations, net of tax	0	0
Gain on sale of discontinued operations, net of tax		0
Net income/(loss)	(53,476)	(32,780)
Less: Net loss attributable to noncontrolling interests	0	0
Net income/(loss) attributable to CoreLogic	(53,476)	(32,780)
Total other comprehensive income/(loss)	(933)	(4,167)
Comprehensive income/(loss) attributable to CoreLogic	(54,409)	(36,947)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0
Total [Member]
Operating Revenue	397,168	358,101
Intercompany Revenue	0	0
Cost of services (excluding depreciation and amortization shown below)	216,027	197,665
Selling, General and Administrative Expense	91,053	85,718
Depreciation, Depletion and Amortization	34,814	29,491
(Loss)/income from continuing operations	55,274	45,227
Interest Expense Net		(14,142)
Interest Income (Expense), Net	(11,604)
Gain/(loss) on investment and other, net	2,799	1,641
(Benefit)/provision for income taxes	21,058	13,238
Equity in earnings of affiliates, net of tax	8,787	9,470
Equity in earnings of subsidiary, net of tax	0	0
Net income/(loss) from continuing operations	34,198	28,958
Loss from discontinued operations, net of tax	(656)	(8,967)
Gain on sale of discontinued operations, net of tax		(3,454)
Net income/(loss)	33,542	16,537
Less: Net loss attributable to noncontrolling interests	(26)	(94)
Net income/(loss) attributable to CoreLogic	33,568	16,631
Total other comprehensive income/(loss)	(538)	4,135
Comprehensive income/(loss) attributable to CoreLogic	33,030	20,766
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		(94)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (26)