Commitments - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 31, 2011 USD ($) Extensions	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Rental expense for operating leases		$ 5.8	$ 4.6	$ 15.1	$ 13.7
CoreLogic India [Member]
Business Acquisition [Line Items]
Supplement agreement, initial term	7 years
Number of extensions allowed under supplement agreement | Extensions	3
Supplement agreement, extension period	1 year
Period subject to minimum commitment under supplement agreement	5 years
Deferred gain on sale	$ 27.1
Amortization period of deferred gain on sale	5 years
Remaining minimum commitment		$ 9.1		$ 9.1
CoreLogic India [Member] | Business Process and Information Technology Services [Member]
Business Acquisition [Line Items]
Minimum commitment	$ 303.5
Cognizant Technology Solutions Corporation [Member] | CoreLogic India [Member]
Business Acquisition [Line Items]
Purchase price for CoreLogic India	$ 50.0