Guarantor Subsidiaries (Income Statement) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Operating Revenue	$ 405,542,000	$ 409,760,000	$ 1,229,683,000	$ 1,157,222,000
Cost of services (excluding depreciation and amortization shown below)	213,789,000	213,008,000	651,150,000	616,397,000
Selling, General and Administrative Expense	90,042,000	102,333,000	283,523,000	273,220,000
Depreciation and amortization	29,695,000	33,037,000	99,333,000	93,434,000
(Loss)/income from continuing operations	72,016,000	61,382,000	195,677,000	174,171,000
Interest Income (Expense), Net	(11,512,000)	(12,725,000)	(34,870,000)	(40,201,000)
Gain/(loss) on investment and other, net	7,627,000	(4,254,000)	10,825,000	(3,865,000)
(Benefit)/provision for income taxes	23,848,000	16,406,000	66,423,000	53,222,000
Equity in earnings of affiliates, net of tax	5,716,000	8,166,000	23,848,000	29,381,000
Net income from continuing operations	49,999,000	36,163,000	129,057,000	106,264,000
Loss from discontinued operations, net of tax	(1,240,000)	(10,157,000)	(3,205,000)	(18,142,000)
Gain on sale of discontinued operations, net of tax	(5,052,000)	12,264,000	(5,052,000)	9,277,000
Net income/(loss)	43,707,000	38,270,000	120,800,000	97,399,000
Less: Net loss attributable to noncontrolling interests	45,000	(50,000)	19,000	(209,000)
Net income attributable to CoreLogic	43,662,000	38,320,000	120,781,000	97,608,000
Total other comprehensive income/(loss)	7,345,000	4,264,000	(31,127,000)	5,637,000
Less: Comprehensive income/(loss) attributable to the noncontrolling interests	45,000	(50,000)	19,000	(209,000)
Comprehensive income attributable to CoreLogic	51,007,000	42,584,000	89,654,000	103,245,000
Parent [Member]
Operating Revenue	0	0	0	0
Intercompany Revenue	0	0	0	0
Cost of services (excluding depreciation and amortization shown below)	0	0	0	0
Selling, General and Administrative Expense	11,997,000	17,459,000	49,450,000	48,628,000
Depreciation and amortization	962,000	610,000	2,655,000	2,137,000
(Loss)/income from continuing operations	(12,959,000)	(18,069,000)	(52,105,000)	(50,765,000)
Interest Expense Net				(38,034,000)
Interest Income (Expense), Net	(11,547,000)	(12,035,000)	(34,993,000)
Gain/(loss) on investment and other, net	(260,000)	1,111,000	1,474,000	2,456,000
(Benefit)/provision for income taxes	(10,640,000)	(10,228,000)	(30,392,000)	(31,698,000)
Equity in earnings of affiliates, net of tax	0	0	0	0
Equity in earnings of subsidiary, net of tax	57,788,000	57,085,000	176,013,000	152,253,000
Net income from continuing operations	43,662,000	38,320,000	120,781,000	97,608,000
Loss from discontinued operations, net of tax	0	0	0	0
Gain on sale of discontinued operations, net of tax	0	0	0	0
Net income/(loss)	43,662,000	38,320,000	120,781,000	97,608,000
Less: Net loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to CoreLogic	43,662,000	38,320,000	120,781,000	97,608,000
Total other comprehensive income/(loss)	7,345,000	4,264,000	(31,127,000)	5,637,000
Less: Comprehensive income/(loss) attributable to the noncontrolling interests	0	0	0	0
Comprehensive income attributable to CoreLogic	51,007,000	42,584,000	89,654,000	103,245,000
Guarantor Subsidiaries [Member]
Operating Revenue	380,220,000	386,180,000	1,157,347,000	1,089,324,000
Intercompany Revenue	0	0	0	0
Cost of services (excluding depreciation and amortization shown below)	205,776,000	203,280,000	624,866,000	588,743,000
Selling, General and Administrative Expense	68,661,000	77,053,000	207,979,000	199,184,000
Depreciation and amortization	23,011,000	26,755,000	79,215,000	73,582,000
(Loss)/income from continuing operations	82,772,000	79,092,000	245,287,000	227,815,000
Interest Expense Net				159,000
Interest Income (Expense), Net	(126,000)	(28,000)	(336,000)
Gain/(loss) on investment and other, net	1,250,000	(5,598,000)	2,714,000	(7,144,000)
(Benefit)/provision for income taxes	31,076,000	24,898,000	93,185,000	81,263,000
Equity in earnings of affiliates, net of tax	5,479,000	7,919,000	23,053,000	28,490,000
Equity in earnings of subsidiary, net of tax	0	0	0	0
Net income from continuing operations	58,299,000	56,487,000	177,533,000	168,057,000
Loss from discontinued operations, net of tax	(1,240,000)	(10,157,000)	(3,205,000)	(18,142,000)
Gain on sale of discontinued operations, net of tax	(6,558,000)	11,678,000	(6,558,000)	8,691,000
Net income/(loss)	50,501,000	58,008,000	167,770,000	158,606,000
Less: Net loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to CoreLogic	50,501,000	58,008,000	167,770,000	158,606,000
Total other comprehensive income/(loss)	0	0	0	0
Less: Comprehensive income/(loss) attributable to the noncontrolling interests	0	0	0	0
Comprehensive income attributable to CoreLogic	50,501,000	58,008,000	167,770,000	158,606,000
Non-Guarantor Subsidiaries [Member]
Operating Revenue	25,322,000	23,580,000	72,336,000	67,898,000
Intercompany Revenue	148,000	146,000	493,000	488,000
Cost of services (excluding depreciation and amortization shown below)	8,161,000	9,874,000	26,777,000	28,142,000
Selling, General and Administrative Expense	9,384,000	7,821,000	26,094,000	25,408,000
Depreciation and amortization	5,722,000	5,672,000	17,463,000	17,715,000
(Loss)/income from continuing operations	2,203,000	359,000	2,495,000	(2,879,000)
Interest Expense Net				(2,326,000)
Interest Income (Expense), Net	161,000	(662,000)	459,000
Gain/(loss) on investment and other, net	6,637,000	233,000	6,637,000	823,000
(Benefit)/provision for income taxes	3,412,000	1,736,000	3,630,000	3,657,000
Equity in earnings of affiliates, net of tax	237,000	247,000	795,000	891,000
Equity in earnings of subsidiary, net of tax	0	0	0	0
Net income from continuing operations	5,826,000	(1,559,000)	6,756,000	(7,148,000)
Loss from discontinued operations, net of tax	0	0	0	0
Gain on sale of discontinued operations, net of tax	1,506,000	586,000	1,506,000	586,000
Net income/(loss)	7,332,000	(973,000)	8,262,000	(6,562,000)
Less: Net loss attributable to noncontrolling interests	45,000	(50,000)	19,000	(209,000)
Net income attributable to CoreLogic	7,287,000	(923,000)	8,243,000	(6,353,000)
Total other comprehensive income/(loss)	7,644,000	5,163,000	(32,289,000)	6,178,000
Less: Comprehensive income/(loss) attributable to the noncontrolling interests	45,000	(50,000)	19,000	(209,000)
Comprehensive income attributable to CoreLogic	14,931,000	4,240,000	(24,046,000)	(175,000)
Consolidation, Eliminations [Member]
Operating Revenue	0	0	0	0
Intercompany Revenue	(148,000)	(146,000)	(493,000)	(488,000)
Cost of services (excluding depreciation and amortization shown below)	(148,000)	(146,000)	(493,000)	(488,000)
Selling, General and Administrative Expense	0	0	0	0
Depreciation and amortization	0	0	0	0
(Loss)/income from continuing operations	0	0	0	0
Interest Expense Net				0
Interest Income (Expense), Net	0	0	0
Gain/(loss) on investment and other, net	0	0	0	0
(Benefit)/provision for income taxes	0	0	0	0
Equity in earnings of affiliates, net of tax	0	0	0	0
Equity in earnings of subsidiary, net of tax	(57,788,000)	(57,085,000)	(176,013,000)	(152,253,000)
Net income from continuing operations	(57,788,000)	(57,085,000)	(176,013,000)	(152,253,000)
Loss from discontinued operations, net of tax	0	0	0	0
Gain on sale of discontinued operations, net of tax	0	0	0	0
Net income/(loss)	(57,788,000)	(57,085,000)	(176,013,000)	(152,253,000)
Less: Net loss attributable to noncontrolling interests	0	0	0	0
Net income attributable to CoreLogic	(57,788,000)	(57,085,000)	(176,013,000)	(152,253,000)
Total other comprehensive income/(loss)	(7,644,000)	(5,163,000)	32,289,000	(6,178,000)
Less: Comprehensive income/(loss) attributable to the noncontrolling interests	0	0	0	0
Comprehensive income attributable to CoreLogic	(65,432,000)	(62,248,000)	(143,724,000)	(158,431,000)
Total [Member]
Operating Revenue	405,542,000	409,760,000	1,229,683,000	1,157,222,000
Intercompany Revenue	0	0	0	0
Cost of services (excluding depreciation and amortization shown below)	213,789,000	213,008,000	651,150,000	616,397,000
Selling, General and Administrative Expense	90,042,000	102,333,000	283,523,000	273,220,000
Depreciation and amortization	29,695,000	33,037,000	99,333,000	93,434,000
(Loss)/income from continuing operations	72,016,000	61,382,000	195,677,000	174,171,000
Interest Expense Net				(40,201,000)
Interest Income (Expense), Net	(11,512,000)	(12,725,000)	(34,870,000)
Gain/(loss) on investment and other, net	7,627,000	(4,254,000)	10,825,000	(3,865,000)
(Benefit)/provision for income taxes	23,848,000	16,406,000	66,423,000	53,222,000
Equity in earnings of affiliates, net of tax	5,716,000	8,166,000	23,848,000	29,381,000
Equity in earnings of subsidiary, net of tax	0	0	0	0
Net income from continuing operations	49,999,000	36,163,000	129,057,000	106,264,000
Loss from discontinued operations, net of tax	(1,240,000)	(10,157,000)	(3,205,000)	(18,142,000)
Gain on sale of discontinued operations, net of tax	(5,052,000)	12,264,000	(5,052,000)	9,277,000
Net income/(loss)	43,707,000	38,270,000	120,800,000	97,399,000
Less: Net loss attributable to noncontrolling interests	45,000	(50,000)	19,000	(209,000)
Net income attributable to CoreLogic	43,662,000	38,320,000	120,781,000	97,608,000
Total other comprehensive income/(loss)	7,345,000	4,264,000	(31,127,000)	5,637,000
Less: Comprehensive income/(loss) attributable to the noncontrolling interests	45,000	(50,000)	19,000	(209,000)
Comprehensive income attributable to CoreLogic	$ 51,007,000	$ 42,584,000	$ 89,654,000	$ 103,245,000