Guarantor Subsidiaries Guarantor Reclassification (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Guarantor Obligations [Line Items]
Operating Revenue	$ 397,168	$ 358,101
Operating Expenses	341,894	312,874
Net income/(loss) attributable to CoreLogic	33,568	16,631
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	33,030	20,766
Net cash (used in)/provided by operating activities - continuing operations	93,071	69,726
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(36,257)	(20,619)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(79,570)	(52,014)
Consolidation, Eliminations [Member]
Guarantor Obligations [Line Items]
Operating Revenue	0	0
Net income/(loss) attributable to CoreLogic	(53,476)	(32,780)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(54,409)	(36,947)
Net cash (used in)/provided by operating activities - continuing operations	0	0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	0	0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	0	0
Parent [Member]
Guarantor Obligations [Line Items]
Operating Revenue	0	0
Net income/(loss) attributable to CoreLogic	33,568	16,631
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	33,030	20,766
Net cash (used in)/provided by operating activities - continuing operations	25,818	19,166
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(1,265)	(989)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(39,919)	(5,586)
Guarantor Subsidiaries [Member]
Guarantor Obligations [Line Items]
Operating Revenue	374,094	335,975
Net income/(loss) attributable to CoreLogic	54,237	34,942
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	54,237	34,942
Net cash (used in)/provided by operating activities - continuing operations	71,132	58,236
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(31,731)	(15,779)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(31,631)	(55,450)
Non-Guarantor Subsidiaries [Member]
Guarantor Obligations [Line Items]
Operating Revenue	23,074	22,126
Net income/(loss) attributable to CoreLogic	(761)	(2,162)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	172	2,005
Net cash (used in)/provided by operating activities - continuing operations	(3,879)	(7,676)
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(3,261)	(3,851)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(8,020)	9,022
Reclassification [Member]
Guarantor Obligations [Line Items]
Operating Revenue		0
Operating Expenses		0
Income (Loss) Attributable to Noncontrolling Interest		0
Net income/(loss) attributable to CoreLogic		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0
Net cash (used in)/provided by operating activities - continuing operations		0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		0
Reclassification [Member] | Consolidation, Eliminations [Member]
Guarantor Obligations [Line Items]
Operating Revenue		(191)
Operating Expenses		(191)
Income (Loss) Attributable to Noncontrolling Interest		0
Net income/(loss) attributable to CoreLogic		(94)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(94)
Net cash (used in)/provided by operating activities - continuing operations		0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		0
Reclassification [Member] | Parent [Member]
Guarantor Obligations [Line Items]
Operating Revenue		0
Operating Expenses		0
Income (Loss) Attributable to Noncontrolling Interest		94
Net income/(loss) attributable to CoreLogic		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0
Net cash (used in)/provided by operating activities - continuing operations		0
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		0
Reclassification [Member] | Guarantor Subsidiaries [Member]
Guarantor Obligations [Line Items]
Operating Revenue		191
Operating Expenses		191
Income (Loss) Attributable to Noncontrolling Interest		0
Net income/(loss) attributable to CoreLogic		0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		0
Net cash (used in)/provided by operating activities - continuing operations		1,299
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		(1,299)
Reclassification [Member] | Non-Guarantor Subsidiaries [Member]
Guarantor Obligations [Line Items]
Operating Revenue		0
Operating Expenses		0
Income (Loss) Attributable to Noncontrolling Interest		(94)
Net income/(loss) attributable to CoreLogic		94
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		94
Net cash (used in)/provided by operating activities - continuing operations		(1,299)
Net Cash Provided by (Used in) Investing Activities, Continuing Operations		0
Net Cash Provided by (Used in) Financing Activities, Continuing Operations		$ 1,299