Guarantor Subsidiaries (Income Statement) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating revenue	$ 345,512,000	$ 367,454,000	$ 365,970,000	$ 326,104,000	$ 328,522,000	$ 356,581,000	$ 368,437,000	$ 350,861,000	$ 1,405,040,000	$ 1,404,401,000	$ 1,333,479,000
Intercompany revenue									0	0	0
Cost of services (exclusive of depreciation and amortization below)									740,301,000	717,205,000	669,484,000
Selling, general and administrative expenses									351,617,000	374,289,000	356,605,000
Depreciation and amortization									138,394,000	126,332,000	117,108,000
Asset Impairment Charges									4,970,000	44,433,000	19,880,000
Operating (loss)/income	36,158,000	77,755,000	41,020,000	14,825,000	(19,264,000)	61,361,000	52,980,000	47,065,000	169,758,000	142,142,000	170,402,000
Total interest expense, net									(66,982,000)	(47,602,000)	(52,473,000)
Gain on investments and other, net									3,882,000	12,032,000	4,996,000
(Benefit)/Provision for income taxes									29,770,000	33,673,000	63,488,000
Equity in earnings/(loss) of affiliates, net of tax	3,831,000	4,032,000	3,875,000	2,382,000	3,510,000	5,716,000	9,347,000	8,788,000	14,120,000	27,361,000	35,983,000
Equity in earnings of subsidiary, net of tax									0	0	0
Net income from continuing operations									91,008,000	100,260,000	95,420,000
(Loss)/income from discontinued operations, net of tax									(16,653,000)	14,423,000	12,387,000
Gain/(loss) from sale of discontinued operations, net of tax									112,000	(7,008,000)	3,841,000
Net income/(loss)									74,467,000	107,675,000	111,648,000
Less: Net income/(loss) attributable to noncontrolling interests									1,267,000	(53,000)	(645,000)
Net income/(loss) attributable to CoreLogic	14,665,000	45,339,000	15,988,000	(2,792,000)	(13,052,000)	43,662,000	43,550,000	33,568,000	73,200,000	107,728,000	112,293,000
Net income									74,467,000	107,675,000	111,648,000
Total other comprehensive (loss)/income									(30,197,000)	(38,075,000)	4,802,000
Less: Comprehensive income/(loss) attributable to the noncontrolling interests									1,267,000	(53,000)	(645,000)
Comprehensive income/(loss) attributable to CoreLogic									43,003,000	69,653,000	117,095,000
Gain/(loss) from sale of discontinued operations, net of tax	(364,000)	476,000	0	0	(212,000)	(5,052,000)	0	(1,744,000)
Parent [Member]
Operating revenue									0	0	0
Intercompany revenue									0	0	0
Cost of services (exclusive of depreciation and amortization below)									0	0	0
Selling, general and administrative expenses									58,176,000	63,205,000	65,637,000
Depreciation and amortization									4,836,000	3,767,000	2,937,000
Asset Impairment Charges									0	0	0
Operating (loss)/income									(63,012,000)	(66,972,000)	(68,574,000)
Total interest expense, net									(65,299,000)	(45,270,000)	(50,222,000)
Gain on investments and other, net									5,070,000	3,785,000	3,492,000
(Benefit)/Provision for income taxes									(43,448,000)	(40,392,000)	(44,908,000)
Equity in earnings/(loss) of affiliates, net of tax									0	0	0
Equity in earnings of subsidiary, net of tax									152,993,000	175,793,000	182,689,000
Net income from continuing operations									73,200,000	107,728,000	112,293,000
(Loss)/income from discontinued operations, net of tax									0	0	0
Gain/(loss) from sale of discontinued operations, net of tax									0	0	0
Net income/(loss)									73,200,000	107,728,000	112,293,000
Less: Net income/(loss) attributable to noncontrolling interests									0	0	0
Net income/(loss) attributable to CoreLogic									73,200,000	107,728,000	112,293,000
Net income									73,200,000	107,728,000	112,293,000
Total other comprehensive (loss)/income									(30,197,000)	(38,075,000)	4,802,000
Less: Comprehensive income/(loss) attributable to the noncontrolling interests									0	0	0
Comprehensive income/(loss) attributable to CoreLogic									43,003,000	69,653,000	117,095,000
Guarantor Subsidiaries [Member]
Operating revenue									1,263,980,000	1,303,115,000	1,244,136,000
Intercompany revenue									0	0	0
Cost of services (exclusive of depreciation and amortization below)									686,630,000	679,032,000	636,707,000
Selling, general and administrative expenses									252,879,000	276,236,000	257,650,000
Depreciation and amortization									107,002,000	98,670,000	91,173,000
Asset Impairment Charges									4,970,000	44,433,000	19,880,000
Operating (loss)/income									212,499,000	204,744,000	238,726,000
Total interest expense, net									(627,000)	(2,000)	88,000
Gain on investments and other, net									(6,278,000)	1,250,000	1,504,000
(Benefit)/Provision for income taxes									73,179,000	72,385,000	102,058,000
Equity in earnings/(loss) of affiliates, net of tax									14,120,000	26,566,000	35,153,000
Equity in earnings of subsidiary, net of tax									0	0	0
Net income from continuing operations									146,535,000	160,173,000	173,413,000
(Loss)/income from discontinued operations, net of tax									(16,653,000)	14,595,000	15,298,000
Gain/(loss) from sale of discontinued operations, net of tax									(1,424,000)	(8,514,000)	3,841,000
Net income/(loss)									128,458,000	166,254,000	192,552,000
Less: Net income/(loss) attributable to noncontrolling interests									0	0	0
Net income/(loss) attributable to CoreLogic									128,458,000	166,254,000	192,552,000
Net income									128,458,000	166,254,000	192,552,000
Total other comprehensive (loss)/income									0	0	0
Less: Comprehensive income/(loss) attributable to the noncontrolling interests									0	0	0
Comprehensive income/(loss) attributable to CoreLogic									128,458,000	166,254,000	192,552,000
Non-Guarantor Subsidiaries [Member]
Operating revenue									141,060,000	101,286,000	89,343,000
Intercompany revenue									637,000	631,000	1,955,000
Cost of services (exclusive of depreciation and amortization below)									53,696,000	38,804,000	34,732,000
Selling, general and administrative expenses									41,174,000	34,848,000	33,318,000
Depreciation and amortization									26,556,000	23,895,000	22,998,000
Asset Impairment Charges									0	0	0
Operating (loss)/income									20,271,000	4,370,000	250,000
Total interest expense, net									(1,056,000)	(2,330,000)	(2,339,000)
Gain on investments and other, net									5,090,000	6,997,000	0
(Benefit)/Provision for income taxes									39,000	1,680,000	6,338,000
Equity in earnings/(loss) of affiliates, net of tax									0	795,000	830,000
Equity in earnings of subsidiary, net of tax									0	0	0
Net income from continuing operations									24,266,000	8,152,000	(7,597,000)
(Loss)/income from discontinued operations, net of tax									0	(172,000)	(2,911,000)
Gain/(loss) from sale of discontinued operations, net of tax									1,536,000	1,506,000	0
Net income/(loss)									25,802,000	9,486,000	(10,508,000)
Less: Net income/(loss) attributable to noncontrolling interests									1,267,000	(53,000)	(645,000)
Net income/(loss) attributable to CoreLogic									24,535,000	9,539,000	(9,863,000)
Net income									25,802,000	9,486,000	(10,508,000)
Total other comprehensive (loss)/income									(26,673,000)	(43,337,000)	5,921,000
Less: Comprehensive income/(loss) attributable to the noncontrolling interests									1,267,000	(53,000)	(645,000)
Comprehensive income/(loss) attributable to CoreLogic									(2,138,000)	(33,798,000)	(3,942,000)
Consolidating/Eliminating Adjustments [Member]
Operating revenue									0	0	0
Intercompany revenue									(637,000)	(631,000)	(1,955,000)
Cost of services (exclusive of depreciation and amortization below)									(25,000)	(631,000)	(1,955,000)
Selling, general and administrative expenses									(612,000)	0	0
Depreciation and amortization									0	0	0
Asset Impairment Charges									0	0	0
Operating (loss)/income									0	0	0
Total interest expense, net									0	0	0
Gain on investments and other, net									0	0	0
(Benefit)/Provision for income taxes									0	0	0
Equity in earnings/(loss) of affiliates, net of tax									0	0	0
Equity in earnings of subsidiary, net of tax									(152,993,000)	(175,793,000)	(182,689,000)
Net income from continuing operations									(152,993,000)	(175,793,000)	(182,689,000)
(Loss)/income from discontinued operations, net of tax									0	0	0
Gain/(loss) from sale of discontinued operations, net of tax									0	0	0
Net income/(loss)									(152,993,000)	(175,793,000)	(182,689,000)
Less: Net income/(loss) attributable to noncontrolling interests									0	0	0
Net income/(loss) attributable to CoreLogic									(152,993,000)	(175,793,000)	(182,689,000)
Net income									(152,993,000)	(175,793,000)	(182,689,000)
Total other comprehensive (loss)/income									26,673,000	43,337,000	(5,921,000)
Less: Comprehensive income/(loss) attributable to the noncontrolling interests									0	0	0
Comprehensive income/(loss) attributable to CoreLogic									$ (126,320,000)	$ (132,456,000)	$ (188,610,000)