Guarantor Subsidiaries (Income Statement) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating Revenue	$ 426,972,000	$ 389,361,000	$ 824,141,000	$ 747,462,000
Cost of services (excluding depreciation and amortization shown below)	221,333,000	205,724,000	437,360,000	403,389,000
Selling, General and Administrative Expense	102,429,000	85,170,000	193,481,000	170,887,000
Depreciation, Depletion and Amortization	34,824,000	30,905,000	69,638,000	60,397,000
(Loss)/income from continuing operations	68,386,000	67,562,000	123,662,000	112,789,000
Interest Income (Expense), Net	(11,753,000)	(13,334,000)	(23,358,000)	(27,476,000)
Gain/(loss) on investment and other, net	399,000	(1,252,000)	3,198,000	389,000
(Benefit)/provision for income taxes	21,517,000	23,578,000	42,575,000	36,816,000
Equity in earnings of affiliates, net of tax	9,345,000	11,745,000	18,132,000	21,215,000
Net income/(loss) from continuing operations	44,860,000	41,143,000	79,059,000	70,101,000
Loss from discontinued operations, net of tax	(1,310,000)	983,000	(1,966,000)	(7,985,000)
Gain on sale of discontinued operations, net of tax	0	466,000	0	(2,987,000)
Net income/(loss)	43,550,000	42,592,000	77,093,000	59,129,000
Less: Net loss attributable to noncontrolling interests	0	(65,000)	(26,000)	(158,000)
Net income/(loss) attributable to CoreLogic	43,550,000	42,657,000	77,119,000	59,287,000
Total other comprehensive income/(loss)	(37,933,000)	(2,762,000)	(38,472,000)	1,373,000
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	0	(65,000)	(26,000)	(158,000)
Comprehensive income/(loss) attributable to CoreLogic	5,617,000	39,895,000	38,647,000	60,660,000
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	20,920,000	13,269,000	37,452,000	31,168,000
Depreciation, Depletion and Amortization	844,000	603,000	1,694,000	1,528,000
(Loss)/income from continuing operations	(21,764,000)	(13,872,000)	(39,146,000)	(32,696,000)
Interest Expense Net				(26,000,000)
Interest Income (Expense), Net	(11,750,000)	(12,508,000)	(23,446,000)
Gain/(loss) on investment and other, net	395,000	(296,000)	1,735,000	1,345,000
(Benefit)/provision for income taxes	(11,922,000)	(6,944,000)	(19,752,000)	(21,470,000)
Equity in earnings of affiliates, net of tax	0	0	0	0
Equity in earnings of subsidiary, net of tax	64,747,000	62,389,000	118,224,000	95,168,000
Net income/(loss) from continuing operations	43,550,000	42,657,000	77,119,000	59,287,000
Loss from discontinued operations, net of tax	0	0	0	0
Gain on sale of discontinued operations, net of tax		0		0
Net income/(loss)	43,550,000	42,657,000	77,119,000	59,287,000
Less: Net loss attributable to noncontrolling interests		0	0	0
Net income/(loss) attributable to CoreLogic	43,550,000	42,657,000	77,119,000	59,287,000
Total other comprehensive income/(loss)	(37,933,000)	(2,762,000)	(38,472,000)	1,373,000
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		0	0	0
Comprehensive income/(loss) attributable to CoreLogic	5,617,000	39,895,000	38,647,000	60,660,000
Guarantor Subsidiaries [Member]
Operating Revenue	409,695,000	367,169,000	777,127,000	703,144,000
Intercompany Revenue	0	0	0	0
Cost of services (excluding depreciation and amortization shown below)	219,284,000	196,672,000	419,089,000	385,463,000
Selling, General and Administrative Expense	73,034,000	64,128,000	139,319,000	122,133,000
Depreciation, Depletion and Amortization	28,009,000	24,059,000	56,203,000	46,827,000
(Loss)/income from continuing operations	89,368,000	82,310,000	162,516,000	148,721,000
Interest Expense Net				188,000
Interest Income (Expense), Net	(143,000)	(3,000)	(210,000)
Gain/(loss) on investment and other, net	4,000	(1,547,000)	1,463,000	(1,547,000)
(Benefit)/provision for income taxes	33,689,000	27,960,000	62,110,000	56,365,000
Equity in earnings of affiliates, net of tax	9,121,000	11,405,000	17,574,000	20,571,000
Equity in earnings of subsidiary, net of tax	0	0	0	0
Net income/(loss) from continuing operations	64,661,000	64,205,000	119,233,000	111,568,000
Loss from discontinued operations, net of tax	(1,310,000)	983,000	(1,966,000)	(7,985,000)
Gain on sale of discontinued operations, net of tax		466,000		(2,987,000)
Net income/(loss)	63,351,000	65,654,000	117,267,000	100,596,000
Less: Net loss attributable to noncontrolling interests		0	0	0
Net income/(loss) attributable to CoreLogic	63,351,000	65,654,000	117,267,000	100,596,000
Total other comprehensive income/(loss)	0	0	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		0	0	0
Comprehensive income/(loss) attributable to CoreLogic	63,351,000	65,654,000	117,267,000	100,596,000
Non-Guarantor Subsidiaries [Member]
Operating Revenue	23,940,000	22,192,000	47,014,000	44,318,000
Intercompany Revenue	179,000	151,000	346,000	342,000
Cost of services (excluding depreciation and amortization shown below)	8,891,000	9,203,000	18,617,000	18,268,000
Selling, General and Administrative Expense	8,475,000	7,773,000	16,710,000	17,586,000
Depreciation, Depletion and Amortization	5,971,000	6,243,000	11,741,000	12,042,000
(Loss)/income from continuing operations	782,000	(876,000)	292,000	(3,236,000)
Interest Expense Net				(1,664,000)
Interest Income (Expense), Net	140,000	(823,000)	298,000
Gain/(loss) on investment and other, net	0	591,000	0	591,000
(Benefit)/provision for income taxes	(250,000)	2,562,000	217,000	1,921,000
Equity in earnings of affiliates, net of tax	224,000	340,000	558,000	644,000
Equity in earnings of subsidiary, net of tax	0	0	0	0
Net income/(loss) from continuing operations	1,396,000	(3,330,000)	931,000	(5,586,000)
Loss from discontinued operations, net of tax	0	0	0	0
Gain on sale of discontinued operations, net of tax		0		0
Net income/(loss)	1,396,000	(3,330,000)	931,000	(5,586,000)
Less: Net loss attributable to noncontrolling interests		(65,000)	(26,000)	(158,000)
Net income/(loss) attributable to CoreLogic	1,396,000	(3,265,000)	957,000	(5,428,000)
Total other comprehensive income/(loss)	(39,000,000)	(3,152,000)	(39,934,000)	1,015,000
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		(65,000)	(26,000)	(158,000)
Comprehensive income/(loss) attributable to CoreLogic	(37,604,000)	(6,417,000)	(38,977,000)	(4,413,000)
Consolidation, Eliminations [Member]
Operating Revenue	(6,663,000)	0	0	0
Intercompany Revenue	(179,000)	(151,000)	(346,000)	(342,000)
Cost of services (excluding depreciation and amortization shown below)	(6,842,000)	(151,000)	(346,000)	(342,000)
Selling, General and Administrative Expense	0	0	0	0
Depreciation, Depletion 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	(64,747,000)	(62,389,000)	(118,224,000)	(95,168,000)
Net income/(loss) from continuing operations	(64,747,000)	(62,389,000)	(118,224,000)	(95,168,000)
Loss from discontinued operations, net of tax	0	0	0	0
Gain on sale of discontinued operations, net of tax		0		0
Net income/(loss)	(64,747,000)	(62,389,000)	(118,224,000)	(95,168,000)
Less: Net loss attributable to noncontrolling interests		0	0	0
Net income/(loss) attributable to CoreLogic	(64,747,000)	(62,389,000)	(118,224,000)	(95,168,000)
Total other comprehensive income/(loss)	39,000,000	3,152,000	39,934,000	(1,015,000)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		0	0	0
Comprehensive income/(loss) attributable to CoreLogic	(25,747,000)	(59,237,000)	(78,290,000)	(96,183,000)
Total [Member]
Operating Revenue	426,972,000	389,361,000	824,141,000	747,462,000
Intercompany Revenue	0	0	0	0
Cost of services (excluding depreciation and amortization shown below)	221,333,000	205,724,000	437,360,000	403,389,000
Selling, General and Administrative Expense	102,429,000	85,170,000	193,481,000	170,887,000
Depreciation, Depletion and Amortization	34,824,000	30,905,000	69,638,000	60,397,000
(Loss)/income from continuing operations	68,386,000	67,562,000	123,662,000	112,789,000
Interest Expense Net				(27,476,000)
Interest Income (Expense), Net	(11,753,000)	(13,334,000)	(23,358,000)
Gain/(loss) on investment and other, net	399,000	(1,252,000)	3,198,000	389,000
(Benefit)/provision for income taxes	21,517,000	23,578,000	42,575,000	36,816,000
Equity in earnings of affiliates, net of tax	9,345,000	11,745,000	18,132,000	21,215,000
Equity in earnings of subsidiary, net of tax	0	0	0	0
Net income/(loss) from continuing operations	44,860,000	41,143,000	79,059,000	70,101,000
Loss from discontinued operations, net of tax	(1,310,000)	983,000	(1,966,000)	(7,985,000)
Gain on sale of discontinued operations, net of tax		466,000		(2,987,000)
Net income/(loss)	43,550,000	42,592,000	77,093,000	59,129,000
Less: Net loss attributable to noncontrolling interests		(65,000)	(26,000)	(158,000)
Net income/(loss) attributable to CoreLogic	43,550,000	42,657,000	77,119,000	59,287,000
Total other comprehensive income/(loss)	(37,933,000)	(2,762,000)	(38,472,000)	1,373,000
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest		(65,000)	(26,000)	(158,000)
Comprehensive income/(loss) attributable to CoreLogic	$ 5,617,000	$ 39,895,000	$ 38,647,000	$ 60,660,000