Goodwill (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill		$ 1,398,199
Accumulated impairment losses		(7,525)
Goodwill, net	1,774,013	1,390,674
Acquisitions	370,386
Translation adjustments	10,237
Goodwill, Other Changes	2,716
Goodwill, net	1,774,013	1,390,674
Data and analytics [Member]
Goodwill [Roll Forward]
Goodwill		689,442
Accumulated impairment losses		(600)
Goodwill, net	1,042,089	688,842
Acquisitions	340,294
Translation adjustments	10,237
Goodwill, Other Changes	(2,716)
Goodwill, net	1,042,089	688,842
Mortgage origination services [Member]
Goodwill [Roll Forward]
Goodwill		708,757
Accumulated impairment losses		(6,925)
Goodwill, net	731,924	701,832
Acquisitions	30,092
Translation adjustments	0
Goodwill, Other Changes	0
Goodwill, net	731,924	701,832
MSB/DQ Member [Domain]
Goodwill [Roll Forward]
Acquisitions	364,000
MSB/DQ Member [Domain] | Data and analytics [Member]
Goodwill [Roll Forward]
Acquisitions	333,900
Terralink [Domain] | Data and analytics [Member]
Goodwill [Roll Forward]
Acquisitions	2,300
Insignificant Acquisition [Domain] | Data and analytics [Member]
Goodwill [Roll Forward]
Acquisitions	$ 4,100