Guarantor Subsidiaries (Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 135,557	$ 148,858	$ 154,552	$ 259,266
Property and equipment, net	193,975	186,617
Goodwill	1,534,966	1,504,232
Other intangible assets, net	183,979	171,584
Capitalized data and database costs, net	327,843	322,289
Investment in affiliates, net	96,764	94,227
Restricted cash	16,390	22,117
Other assets	149,949	138,837
Total assets	3,084,698	3,029,827
Liabilities and Equity
Current liabilities	520,979	517,091
Long-term debt, net	783,280	792,324
Deferred revenue	376,255	309,418
Deferred income taxes, long term	83,928	71,361
Other liabilities	158,300	168,687
Redeemable noncontrolling interests	10,987	0
Total Corelogic's stockholders' equity	1,150,969	1,169,301
Noncontrolling interests	0	1,645
Total liabilities and equity	3,084,698	3,029,827
Parent [Member]
Assets
Cash and cash equivalents	106,441	111,305	130,039	229,871
Other current assets	45,699	59,977
Property and equipment, net	18,637	14,921
Goodwill	0	0
Other intangible assets, net	362	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	14,622	18,299
Investments in subsidiaries	1,997,539	1,853,561
Intercompany Receivable	60,134	65,885
Other assets	105,944	107,976
Total assets	2,408,901	2,291,447
Liabilities and Equity
Current liabilities	106,438	82,668
Long-term debt, net	778,270	783,470
Deferred revenue	0	0
Deferred income taxes, long term	0	0
Intercompany Payable	248,288	125,587
Other liabilities	124,936	130,421
Redeemable noncontrolling interests	0
Total Corelogic's stockholders' equity	1,150,969	1,169,301
Noncontrolling interests		0
Total liabilities and equity	2,408,901	2,291,447
Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	0	1,812	314	9,106
Other current assets	375,732	364,178
Property and equipment, net	142,103	139,831
Goodwill	1,365,535	1,323,700
Other intangible assets, net	139,331	123,011
Capitalized data and database costs, net	248,084	238,598
Investment in affiliates, net	96,764	88,647
Deferred income tax assets, long-term	0	0
Restricted cash	305	305
Investments in subsidiaries	0	0
Intercompany Receivable	239,118	125,587
Other assets	42,027	28,420
Total assets	2,648,999	2,434,089
Liabilities and Equity
Current liabilities	385,271	406,890
Long-term debt, net	5,010	8,854
Deferred revenue	376,255	309,418
Deferred income taxes, long term	123,618	111,051
Intercompany Payable	0	0
Other liabilities	29,862	33,011
Redeemable noncontrolling interests	0
Total Corelogic's stockholders' equity	1,728,983	1,564,865
Noncontrolling interests		0
Total liabilities and equity	2,648,999	2,434,089
Non-Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	29,116	35,741	24,199	20,289
Other current assets	29,276	17,352
Property and equipment, net	33,235	31,865
Goodwill	169,431	180,532
Other intangible assets, net	44,286	48,573
Capitalized data and database costs, net	79,759	83,691
Investment in affiliates, net	0	5,580
Deferred income tax assets, long-term	0	0
Restricted cash	1,463	3,513
Investments in subsidiaries	0	0
Intercompany Receivable	9,170	0
Other assets	1,978	2,441
Total assets	397,714	409,288
Liabilities and Equity
Current liabilities	34,702	27,974
Long-term debt, net	0	0
Deferred revenue	0	0
Deferred income taxes, long term	19,833	19,833
Intercompany Payable	60,134	65,885
Other liabilities	3,502	5,255
Redeemable noncontrolling interests	10,987
Total Corelogic's stockholders' equity	268,556	288,696
Noncontrolling interests		1,645
Total liabilities and equity	397,714	409,288
Consolidation, Eliminations [Member]
Assets
Cash and cash equivalents	0	0	0	0
Other current assets	(5,432)	(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	(1,997,539)	(1,853,561)
Intercompany Receivable	(308,422)	(191,472)
Other assets	0	0
Total assets	(2,370,916)	(2,104,997)
Liabilities and Equity
Current liabilities	(5,432)	(441)
Long-term debt, net	0	0
Deferred revenue	0	0
Deferred income taxes, long term	(59,523)	(59,523)
Intercompany Payable	(308,422)	(191,472)
Other liabilities	0	0
Redeemable noncontrolling interests	0
Total Corelogic's stockholders' equity	(1,997,539)	(1,853,561)
Noncontrolling interests		0
Total liabilities and equity	(2,370,916)	(2,104,997)
Total [Member]
Assets
Cash and cash equivalents	135,557	148,858	154,552	259,266
Other current assets	445,275	441,066
Property and equipment, net	193,975	186,617
Goodwill	1,534,966	1,504,232
Other intangible assets, net	183,979	171,584
Capitalized data and database costs, net	327,843	322,289
Investment in affiliates, net	96,764	94,227
Deferred income tax assets, long-term	0	0
Restricted cash	16,390	22,117
Investments in subsidiaries	0	0
Intercompany Receivable	0	0
Other assets	149,949	138,837
Total assets	3,084,698	3,029,827
Liabilities and Equity
Current liabilities	520,979	517,091
Long-term debt, net	783,280	792,324
Deferred revenue	376,255	309,418
Deferred income taxes, long term	83,928	71,361
Intercompany Payable	0	0
Other liabilities	158,300	168,687
Redeemable noncontrolling interests	10,987
Total Corelogic's stockholders' equity	1,150,969	1,169,301
Noncontrolling interests		1,645
Total liabilities and equity	$ 3,084,698	$ 3,029,827