Guarantor Subsidiaries (Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Assets
Current assets	$ 541,989	$ 655,979
Property and equipment, net	197,214	214,237
Goodwill	1,475,928	1,472,206
Other identifiable intangible assets, net	147,966	164,365
Capitalized data and database costs, net	309,147	304,006
Investment in affiliates, net	109,056	113,809
Deferred income tax assets, long-term	30,811	38,305
Restricted cash	22,081	22,044
Other assets	130,232	125,120
Total assets	2,964,424	3,110,071
Liabilities and Equity
Current liabilities	515,156	500,659
Long-term debt, net	794,457	846,027
Deferred revenue	313,466	338,799
Deferred income taxes, long term	19,376	18,383
Other liabilities	172,138	161,382
Total Corelogic's stockholders' equity	1,147,750	1,242,521
Noncontrolling interests	2,081	2,300
Total liabilities and equity	2,964,424	3,110,071
Parent [Member]
Assets
Current assets	171,969	284,329
Property and equipment, net	13,935	8,500
Goodwill	0	0
Other identifiable 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	45,711	53,724
Restricted cash	18,299	18,298
Investments in subsidiaries	1,744,865	1,797,065
Other assets	98,767	92,910
Total assets	2,093,546	2,254,826
Liabilities and Equity
Current liabilities	76,530	95,237
Long-term debt, net	733,820	784,570
Deferred revenue	0	0
Deferred income taxes, long term	0	0
Other liabilities	135,446	132,498
Total Corelogic's stockholders' equity	1,147,750	1,242,521
Noncontrolling interests	0	0
Total liabilities and equity	2,093,546	2,254,826
Guarantor Subsidiaries [Member]
Assets
Current assets	323,345	339,098
Property and equipment, net	149,877	175,129
Goodwill	1,288,328	1,288,328
Other identifiable intangible assets, net	96,186	107,994
Capitalized data and database costs, net	224,638	218,534
Investment in affiliates, net	102,728	108,323
Deferred income tax assets, long-term	0	0
Restricted cash	306	122
Investments in subsidiaries	0	0
Other assets	29,328	30,152
Total assets	2,214,736	2,267,680
Liabilities and Equity
Current liabilities	391,623	369,631
Long-term debt, net	8,747	10,412
Deferred revenue	313,466	338,799
Deferred income taxes, long term	14,900	15,419
Other liabilities	32,861	24,333
Total Corelogic's stockholders' equity	1,453,139	1,509,086
Noncontrolling interests	0	0
Total liabilities and equity	2,214,736	2,267,680
Non-Guarantor Subsidiaries [Member]
Assets
Current assets	46,675	32,552
Property and equipment, net	33,402	30,608
Goodwill	187,600	183,878
Other identifiable intangible assets, net	51,780	56,371
Capitalized data and database costs, net	84,509	85,472
Investment in affiliates, net	6,328	5,486
Deferred income tax assets, long-term	0	0
Restricted cash	3,476	3,624
Investments in subsidiaries	0	0
Other assets	2,137	2,058
Total assets	415,907	400,049
Liabilities and Equity
Current liabilities	47,003	35,791
Long-term debt, net	51,890	51,045
Deferred revenue	0	0
Deferred income taxes, long term	19,376	18,383
Other liabilities	3,831	4,551
Total Corelogic's stockholders' equity	291,726	287,979
Noncontrolling interests	2,081	2,300
Total liabilities and equity	415,907	400,049
Consolidation, Eliminations [Member]
Assets
Current assets	0	0
Property and equipment, net	0	0
Goodwill	0	0
Other identifiable 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	(14,900)	(15,419)
Restricted cash	0	0
Investments in subsidiaries	(1,744,865)	(1,797,065)
Other assets	0	0
Total assets	(1,759,765)	(1,812,484)
Liabilities and Equity
Current liabilities	0	0
Long-term debt, net	0	0
Deferred revenue	0	0
Deferred income taxes, long term	(14,900)	(15,419)
Other liabilities	0	0
Total Corelogic's stockholders' equity	(1,744,865)	(1,797,065)
Noncontrolling interests	0	0
Total liabilities and equity	(1,759,765)	(1,812,484)
Total [Member]
Assets
Current assets	541,989	655,979
Property and equipment, net	197,214	214,237
Goodwill	1,475,928	1,472,206
Other identifiable intangible assets, net	147,966	164,365
Capitalized data and database costs, net	309,147	304,006
Investment in affiliates, net	109,056	113,809
Deferred income tax assets, long-term	30,811	38,305
Restricted cash	22,081	22,044
Investments in subsidiaries	0	0
Other assets	130,232	125,120
Total assets	2,964,424	3,110,071
Liabilities and Equity
Current liabilities	515,156	500,659
Long-term debt, net	794,457	846,027
Deferred revenue	313,466	338,799
Deferred income taxes, long term	19,376	18,383
Other liabilities	172,138	161,382
Total Corelogic's stockholders' equity	1,147,750	1,242,521
Noncontrolling interests	2,081	2,300
Total liabilities and equity	$ 2,964,424	$ 3,110,071