Guarantor Subsidiaries Guarantor Subsidiaries (Revisions) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Total current assets	$ 589,924				$ 702,913				$ 589,924	$ 702,913
Intercompany payable	0				0				0	0
Payments to Acquire Additional Interest in Subsidiaries									0	72,000	385,847
Current liabilities	517,091				500,659				517,091	500,659
Total CoreLogic stockholders' equity	1,169,301				1,242,521				1,169,301	1,242,521
Operating revenue	410,411	409,760	389,361	358,101	345,398	348,446	328,421	316,282	1,567,633	1,338,547	1,280,276
Total operating expenses									1,345,373	1,249,862	1,166,593
Net income/(loss) attributable to CoreLogic	14,685	38,320	42,657	16,631	(22,160)	(107,190)	31,485	23,256	112,293	(74,609)	(56,300)
Comprehensive (loss)/income attributable to CoreLogic									117,095	(110,868)	(43,452)
Net cash (used in)/provided by operating activities - continuing operations									362,299	171,592	164,145
Net cash used in investing activities - continuing operations									(142,866)	(183,529)	143,972
Net cash used in investing activities - discontinued operations									(4,066)	(4,497)	(82,729)
Net cash used in financing activities - continuing operations									(332,376)	(149,983)	(340,950)
Parent [Member]
Intercompany payable	125,587				0				125,587	0
Payments to Acquire Additional Interest in Subsidiaries										0	0
Current liabilities	82,668								82,668
Total CoreLogic stockholders' equity	1,169,301				1,242,521				1,169,301	1,242,521
Operating revenue									0	0	0
Net income/(loss) attributable to CoreLogic									112,293	(74,609)	(56,300)
Comprehensive (loss)/income attributable to CoreLogic									117,095	(110,868)	(43,452)
Net cash (used in)/provided by operating activities - continuing operations									(79,525)	(12,523)	(65,230)
Net cash used in investing activities - continuing operations									(3,196)	(216,702)	(43,084)
Net cash used in investing activities - discontinued operations									0	0	0
Net cash used in financing activities - continuing operations									(38,380)	108,148	299,750
Guarantor Subsidiaries [Member]
Intercompany payable	0				157,039				0	157,039
Payments to Acquire Additional Interest in Subsidiaries										72,000	385,847
Current liabilities	406,890								406,890
Total CoreLogic stockholders' equity	1,564,865				1,352,046				1,564,865	1,352,046
Operating revenue									1,477,258	1,275,977	1,276,089
Net income/(loss) attributable to CoreLogic									191,244	(44,155)	122,185
Comprehensive (loss)/income attributable to CoreLogic									191,244	(58,248)	123,961
Net cash (used in)/provided by operating activities - continuing operations									424,683	177,100	220,002
Net cash used in investing activities - continuing operations									(125,091)	16,609	(78,968)
Net cash used in investing activities - discontinued operations									(4,066)	(4,497)	(12,193)
Net cash used in financing activities - continuing operations									(306,886)	(207,616)	(400,311)
Non-Guarantor Subsidiaries [Member]
Intercompany payable	65,885				13,898				65,885	13,898
Payments to Acquire Additional Interest in Subsidiaries										0	0
Current liabilities	27,974								27,974
Total CoreLogic stockholders' equity	288,696				286,690				288,696	286,690
Operating revenue									90,375	62,570	4,187
Net income/(loss) attributable to CoreLogic									(8,557)	(3,863)	(111,434)
Comprehensive (loss)/income attributable to CoreLogic									(2,637)	(16,475)	(111,981)
Net cash (used in)/provided by operating activities - continuing operations									17,141	7,015	9,373
Net cash used in investing activities - continuing operations									(14,579)	16,564	266,024
Net cash used in investing activities - discontinued operations									0	0	(70,536)
Net cash used in financing activities - continuing operations									12,890	(50,515)	(240,389)
Consolidating/Eliminating Adjustments [Member]
Intercompany payable	(191,472)				(170,937)				(191,472)	(170,937)
Payments to Acquire Additional Interest in Subsidiaries										0	0
Current liabilities	(441)								(441)
Total CoreLogic stockholders' equity	(1,853,561)				(1,638,736)				(1,853,561)	(1,638,736)
Operating revenue									0	0	0
Net income/(loss) attributable to CoreLogic									(182,687)	48,018	(10,751)
Comprehensive (loss)/income attributable to CoreLogic									(188,607)	74,723	(11,980)
Net cash (used in)/provided by operating activities - continuing operations									0	0	0
Net cash used in investing activities - continuing operations									0	0	0
Net cash used in investing activities - discontinued operations									0	0	0
Net cash used in financing activities - continuing operations									0	0	0
Reclassification [Member]
Total current assets					46,934					46,934
Non-current assets					(38,305)					(38,305)
Current liabilities					0					0
Total CoreLogic stockholders' equity					0					0
Operating revenue										0	0
Total operating expenses										0	0
Equity in earnings/(losses) of subsidiary, net of tax											0
Less: Net income attributable to noncontrolling interests										0	0
Net income/(loss) attributable to CoreLogic										0	0
Comprehensive (loss)/income attributable to CoreLogic										0	0
Net cash (used in)/provided by operating activities - continuing operations										0	0
Net cash used in investing activities - continuing operations										72,000	392,384
Net cash used in investing activities - discontinued operations											(6,537)
Net cash used in financing activities - continuing operations										(72,000)	(385,847)
Reclassification [Member] | Parent [Member]
Total current assets					170,937					170,937
Non-current assets					(160,629)					(160,629)
Current liabilities					12,608					12,608
Non-current liabilities					0					0
Total CoreLogic stockholders' equity					(2,300)					(2,300)
Operating revenue										0	0
Total operating expenses										1,098	(842)
Equity in earnings/(losses) of subsidiary, net of tax											(38,131)
Less: Net income attributable to noncontrolling interests										(980)	(37,670)
Net income/(loss) attributable to CoreLogic										0	0
Comprehensive (loss)/income attributable to CoreLogic										0	0
Net cash (used in)/provided by operating activities - continuing operations										(1,098)	3,683
Net cash used in investing activities - continuing operations										49,246	392,384
Net cash used in investing activities - discontinued operations											0
Net cash used in financing activities - continuing operations										(43,122)	(395,593)
Reclassification [Member] | Guarantor Subsidiaries [Member]
Total current assets					46,313					46,313
Non-current assets					15,419					15,419
Current liabilities					157,039					157,039
Non-current liabilities					62,353					62,353
Total CoreLogic stockholders' equity					(157,039)					(157,039)
Operating revenue										45,678	56,474
Total operating expenses										44,581	57,315
Equity in earnings/(losses) of subsidiary, net of tax											0
Less: Net income attributable to noncontrolling interests										0	37,627
Net income/(loss) attributable to CoreLogic										1,098	(38,088)
Comprehensive (loss)/income attributable to CoreLogic										1,098	(38,088)
Net cash (used in)/provided by operating activities - continuing operations										1,098	(4,973)
Net cash used in investing activities - continuing operations										0	0
Net cash used in investing activities - discontinued operations											(6,537)
Net cash used in financing activities - continuing operations										(6,124)	4,973
Reclassification [Member] | Non-Guarantor Subsidiaries [Member]
Total current assets					4,213					4,213
Non-current assets					0					0
Current liabilities					4,882					4,882
Non-current liabilities					0					0
Total CoreLogic stockholders' equity					(1,290)					(1,290)
Operating revenue										0	0
Total operating expenses										0	0
Equity in earnings/(losses) of subsidiary, net of tax											0
Less: Net income attributable to noncontrolling interests										980	43
Net income/(loss) attributable to CoreLogic										(980)	(43)
Comprehensive (loss)/income attributable to CoreLogic										(980)	(43)
Net cash (used in)/provided by operating activities - continuing operations										0	1,290
Net cash used in investing activities - continuing operations										22,754	0
Net cash used in investing activities - discontinued operations											0
Net cash used in financing activities - continuing operations										(22,754)	4,773
Reclassification [Member] | Consolidating/Eliminating Adjustments [Member]
Total current assets					(174,529)					(174,529)
Non-current assets					106,905					106,905
Current liabilities					(174,529)					(174,529)
Non-current liabilities					(53,724)					(53,724)
Total CoreLogic stockholders' equity					160,629					160,629
Operating revenue										(45,678)	(56,474)
Total operating expenses										(45,679)	(56,473)
Equity in earnings/(losses) of subsidiary, net of tax											38,131
Less: Net income attributable to noncontrolling interests										0	0
Net income/(loss) attributable to CoreLogic										(118)	38,131
Comprehensive (loss)/income attributable to CoreLogic										(118)	38,131
Net cash (used in)/provided by operating activities - continuing operations										0	0
Net cash used in investing activities - continuing operations										0	0
Net cash used in investing activities - discontinued operations											0
Net cash used in financing activities - continuing operations										$ 0	$ 0