Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator for basic and diluted net income per share:
Net income from continuing operations	$ 58,532	$ 41,182	$ 86,894	$ 53,891
(Loss)/income from discontinued operations, net of tax	(16)	78	(91)	2,495
Gain from sale of discontinued operations, net of tax	0	0	0	312
Net income	$ 58,516	$ 41,260	$ 86,803	$ 56,698
Denominator:
Weighted-average shares for basic income per share (in shares)	81,284	84,548	81,269	84,490
Dilutive effect of stock options and restricted stock units (in shares)	1,156	1,549	1,416	1,734
Weighted-average shares for diluted income per share (in shares)	82,440	86,097	82,685	86,224
Basic:
Net income from continuing operations (usd per share)	$ 0.72	$ 0.49	$ 1.07	$ 0.64
(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)	0.72	0.49	1.07	0.67
Diluted:
Net income from continuing operations (usd per share)	0.71	0.48	1.05	0.63
(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)	$ 0.71	$ 0.48	$ 1.05	$ 0.66
Antidilutive securities excluded from computation of earnings per share	100	100	100	100