Unaudited Quarterly Financial Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Operating revenue	$ 474,914	$ 523,896	$ 500,204	$ 453,543	$ 390,886	$ 386,439	$ 386,013	$ 364,772	$ 1,952,557	$ 1,528,110	$ 1,405,040
Operating income	56,939	84,824	75,515	57,311	27,032	65,920	60,707	49,265	274,589	202,924	169,758
Equity in earnings/(loss) of affiliates, net of tax	(99)	607	78	(90)	1,789	3,498	4,667	3,766	496	13,720	14,120
Income from continuing operations, net of tax	5,982	36,002	40,424	27,538	37,816	28,288	33,006	29,290	109,946	128,400	89,741
Loss from discontinued operations, net of tax	(468)	(936)	(4)	(58)	(111)	(117)	(217)	(111)	(1,466)	(556)	(16,653)
Loss from sale of discontinued operations, net of tax	(1,930)	0	0	0
Net income attributable to CoreLogic	$ 3,584	$ 35,066	$ 40,420	$ 27,480	$ 37,705	$ 28,171	$ 32,789	$ 29,179	$ 106,550	$ 127,844	$ 73,200
Earnings Per Share, Basic (usd per share)
Income from continuing operations, net of tax	$ 0.07	$ 0.41	$ 0.46	$ 0.31	$ 0.43	$ 0.32	$ 0.37	$ 0.33	$ 1.26	$ 1.44	$ 0.99
Loss from discontinued operations, net of tax	(0.01)	(0.01)	0.00	0.00					(0.02)	(0.01)	(0.18)
Loss from discontinued operations, net of tax	(0.02)	0.00	0.00	0.00	0.00	0.00	0.00	0.00	(0.02)	0.00	0.00
Net income attributable to CoreLogic	0.04	0.40	0.46	0.31	0.43	0.32	0.37	0.33	1.22	1.43	0.81
Earnings Per Share, Diluted (usd per share)
Income from continuing operations, net of tax	0.07	0.40	0.45	0.31	0.42	0.31	0.36	0.32	1.23	1.42	0.97
Loss from discontinued operations, net of tax	(0.01)	(0.01)	0.00	0.00					(0.02)	(0.01)	(0.18)
Loss from discontinued operations, net of tax	(0.02)	0.00	0.00	0.00	0.00	0.00	0.00	0.00	(0.02)	0.00	0.00
Earnings Per Share, Diluted	$ 0.04	$ 0.39	$ 0.45	$ 0.31	$ 0.42	$ 0.31	$ 0.36	$ 0.32	$ 1.19	$ 1.41	$ 0.79
Weighted-average common shares outstanding:
Basic (in shares)	85,534	87,584	88,572	88,310	88,157	88,719	89,564	89,751	87,502	89,070	90,825
Diluted (in shares)	87,289	89,188	89,968	89,919	89,789	90,154	90,963	91,117	89,122	90,564	92,429