Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Operating revenues	$ 488,401	$ 473,978	$ 933,301	$ 913,829
Cost of services (excluding depreciation and amortization shown below)	239,346	249,162	478,735	501,128
Selling, general and administrative expenses	112,022	103,552	226,974	215,400
Depreciation and amortization	47,396	42,871	93,536	86,343
Total operating expenses	398,764	395,585	799,245	802,871
Operating income	89,637	78,393	134,056	110,958
Interest expense:
Interest income	224	592	754	930
Interest expense	18,987	14,535	36,679	28,666
Total interest expense, net	(18,763)	(13,943)	(35,925)	(27,736)
Gain/(loss) on investments and other, net	2,128	(4,353)	2,289	(3,418)
Income from continuing operations before equity in earnings/(losses) of affiliates and income taxes	73,002	60,097	100,420	79,804
Provision for income taxes	17,307	18,635	16,596	24,909
Income from continuing operations before equity in earnings/(losses) of affiliates	55,695	41,462	83,824	54,895
Equity in Earnings/(Losses) of Affiliates, Net of Tax	2,837	(280)	3,070	(1,004)
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
Basic income per share:
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 income per share:
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
Weighted-average common shares outstanding:
Basic (in shares)	81,284	84,548	81,269	84,490
Diluted (in shares)	82,440	86,097	82,685	86,224