Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Operating revenues	$ 451,768	$ 483,131	$ 1,385,069	$ 1,396,960
Cost of services (excluding depreciation and amortization shown below)	230,419	244,186	709,154	745,314
Selling, general and administrative expenses	113,075	131,323	340,049	346,723
Depreciation and amortization	48,494	45,326	142,030	131,668
Total operating expenses	391,988	420,835	1,191,233	1,223,705
Operating income	59,780	62,296	193,836	173,255
Interest expense:
Interest income	299	393	1,053	1,323
Interest expense	19,382	16,686	56,061	45,352
Total interest expense, net	(19,083)	(16,293)	(55,008)	(44,029)
Gain/(loss) on investments and other, net	2,835	(3,095)	5,124	(6,513)
Income from continuing operations before equity in (losses)/earnings of affiliates and income taxes	43,532	42,908	143,952	122,713
Provision for income taxes	20,836	11,851	37,432	36,759
Income from continuing operations before equity in (losses)/earnings of affiliates	22,696	31,057	106,520	85,954
Equity in (losses)/earnings of affiliates, net of tax	(161)	(229)	2,909	(1,232)
Net income from continuing operations	22,535	30,828	109,429	84,722
(Loss)/income from discontinued operations, net of tax	(84)	(74)	(175)	2,421
Gain from sale of discontinued operations, net of tax	0	0	0	310
Net income	$ 22,451	$ 30,754	$ 109,254	$ 87,453
Basic income per share:
Net income from continuing operations (usd per share)	$ 0.28	$ 0.37	$ 1.35	$ 1.01
(Loss)/income from discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.03
Gain from sale of discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.00
Net income attributable to CoreLogic (usd per share)	0.28	0.37	1.35	1.04
Diluted income per share:
Net income from continuing operations (usd per share)	0.27	0.36	1.33	0.99
(Loss)/income from discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.03
Gain from sale of discontinued operations, net of tax (usd per share)	0.00	0.00	0.00	0.00
Net income attributable to CoreLogic (usd per share)	$ 0.27	$ 0.36	$ 1.33	$ 1.02
Weighted-average common shares outstanding:
Basic (in shares)	80,680	83,362	81,073	84,114
Diluted (in shares)	82,017	85,090	82,528	85,840