Income Taxes (Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CoreLogic [Member]
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	3.40%	6.20%	4.00%
Foreign taxes (less than) in excess of federal rate	0.40%	(5.60%)	1.00%
Non-deductible expenses, including Separation-related	0.50%	1.70%	4.90%
Change from investee to subsidiary	(2.50%)	0.00%	(2.30%)
Change in uncertain tax positions	(0.70%)	1.30%	2.70%
Research and development credits	(2.60%)	(7.90%)	(10.20%)
Other items, net	(0.10%)	(2.50%)	(3.50%)
Effective income tax rate	33.40%	28.20%	31.60%
Affiliates [Member]
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	3.40%	3.60%	3.20%
Foreign taxes (less than) in excess of federal rate	1.50%	0.00%	(0.60%)
Non-deductible expenses, including Separation-related	0.00%	0.00%	0.00%
Change from investee to subsidiary	0.00%	0.00%	0.00%
Change in uncertain tax positions	0.00%	0.00%	0.00%
Research and development credits	(0.00%)	(0.00%)	(0.00%)
Other items, net	0.00%	0.00%	0.00%
Effective income tax rate	39.90%	38.60%	37.60%