Guarantor Subsidiaries (Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 176,591	$ 148,858	$ 259,673	$ 259,266
Property and equipment, net	181,729	186,617
Goodwill	1,486,207	1,504,232
Other intangible assets, net	155,724	171,584
Capitalized data and database costs, net	316,288	322,289
Investment in affiliates, net	99,484	94,227
Restricted cash	20,025	22,117
Other assets	150,267	138,837
Total assets	3,023,959	3,029,827
Liabilities and Equity
Current liabilities	506,517	517,091
Long-term debt, net	783,731	792,324
Deferred revenue	345,381	309,418
Deferred income taxes, long term	76,908	71,361
Other liabilities	161,778	168,687
Total Corelogic's stockholders' equity	1,149,644	1,169,301
Noncontrolling interests	0	1,645
Total liabilities and equity	3,023,959	3,029,827
Parent [Member]
Assets
Cash and cash equivalents	147,775	111,305	246,101	229,871
Other current assets	47,140	59,977
Property and equipment, net	15,948	14,921
Goodwill	0	0
Other intangible assets, net	376	0
Capitalized data and database costs, net	0	0
Investment in affiliates, net	0	0
Deferred income tax assets, long-term	59,523	59,523
Restricted cash	18,303	18,299
Investments in subsidiaries	1,933,141	1,853,561
Intercompany Receivable	108,945	107,976
Other assets	62,619	65,885
Total assets	2,393,770	2,291,447
Liabilities and Equity
Current liabilities	85,164	82,668
Long-term debt, net	779,095	783,470
Deferred revenue	0	0
Deferred income taxes, long term	0	0
Intercompany Payable	252,070	125,587
Other liabilities	127,797	130,421
Total Corelogic's stockholders' equity	1,149,644	1,169,301
Noncontrolling interests	0	0
Total liabilities and equity	2,393,770	2,291,447
Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	1,611	1,812	(2,479)	9,106
Other current assets	369,998	364,178
Property and equipment, net	137,744	139,831
Goodwill	1,336,593	1,323,700
Other intangible assets, net	115,604	123,011
Capitalized data and database costs, net	243,437	238,598
Investment in affiliates, net	93,937	88,647
Deferred income tax assets, long-term	0	0
Restricted cash	306	305
Investments in subsidiaries	0	0
Intercompany Receivable	39,311	28,420
Other assets	247,348	125,587
Total assets	2,585,889	2,434,089
Liabilities and Equity
Current liabilities	394,812	406,890
Long-term debt, net	4,636	8,854
Deferred revenue	345,381	309,418
Deferred income taxes, long term	116,598	111,051
Intercompany Payable	0	0
Other liabilities	30,342	33,011
Total Corelogic's stockholders' equity	1,694,120	1,564,865
Noncontrolling interests	0	0
Total liabilities and equity	2,585,889	2,434,089
Non-Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	27,205	35,741	16,051	20,289
Other current assets	24,959	17,352
Property and equipment, net	28,037	31,865
Goodwill	149,614	180,532
Other intangible assets, net	39,744	48,573
Capitalized data and database costs, net	72,851	83,691
Investment in affiliates, net	5,547	5,580
Deferred income tax assets, long-term	0	0
Restricted cash	1,416	3,513
Investments in subsidiaries	0	0
Intercompany Receivable	2,011	2,441
Other assets	4,722	0
Total assets	356,106	409,288
Liabilities and Equity
Current liabilities	30,994	27,974
Long-term debt, net	0	0
Deferred revenue	0	0
Deferred income taxes, long term	19,833	19,833
Intercompany Payable	62,619	65,885
Other liabilities	3,639	5,255
Total Corelogic's stockholders' equity	239,021	288,696
Noncontrolling interests	0	1,645
Total liabilities and equity	356,106	409,288
Consolidation, Eliminations [Member]
Assets
Cash and cash equivalents	0	0	0	0
Other current assets	(4,453)	(441)
Property and equipment, net	0	0
Goodwill	0	0
Other intangible assets, net	0	0
Capitalized data and database costs, net	0	0
Investment in affiliates, net	0	0
Deferred income tax assets, long-term	(59,523)	(59,523)
Restricted cash	0	0
Investments in subsidiaries	(1,933,141)	(1,853,561)
Intercompany Receivable	0	0
Other assets	(314,689)	(191,472)
Total assets	(2,311,806)	(2,104,997)
Liabilities and Equity
Current liabilities	(4,453)	(441)
Long-term debt, net	0	0
Deferred revenue	0	0
Deferred income taxes, long term	(59,523)	(59,523)
Intercompany Payable	(314,689)	(191,472)
Other liabilities	0	0
Total Corelogic's stockholders' equity	(1,933,141)	(1,853,561)
Noncontrolling interests	0	0
Total liabilities and equity	(2,311,806)	(2,104,997)
Total [Member]
Assets
Cash and cash equivalents	176,591	148,858	259,673	259,266
Other current assets	437,644	441,066
Property and equipment, net	181,729	186,617
Goodwill	1,486,207	1,504,232
Other intangible assets, net	155,724	171,584
Capitalized data and database costs, net	316,288	322,289
Investment in affiliates, net	99,484	94,227
Deferred income tax assets, long-term	0	0
Restricted cash	20,025	22,117
Investments in subsidiaries	0	0
Intercompany Receivable	0	0
Other assets	150,267	138,837
Total assets	3,023,959	3,029,827
Liabilities and Equity
Current liabilities	506,517	517,091
Long-term debt, net	783,731	792,324
Deferred revenue	345,381	309,418
Deferred income taxes, long term	76,908	71,361
Intercompany Payable	0	0
Other liabilities	161,778	168,687
Total Corelogic's stockholders' equity	1,149,644	1,169,301
Noncontrolling interests	0	1,645
Total liabilities and equity	$ 3,023,959	$ 3,029,827