Goodwill (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		9 Months Ended											3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Data and analytics [Member]	Dec. 31, 2013 Data and analytics [Member]	Dec. 31, 2013 Mortgage origination services [Member]	Sep. 30, 2014 Mortgage origination services [Member]	Dec. 31, 2013 Total [Member]	Sep. 30, 2014 MSB/DQ Member [Domain]	Sep. 30, 2014 MSB/DQ Member [Domain] Data and analytics [Member]	Sep. 30, 2014 MSB/DQ Member [Domain] Mortgage origination services [Member]	Sep. 30, 2014 Terralink [Domain] Data and analytics [Member]	Sep. 30, 2014 Insignificant Acquisition [Domain] Data and analytics [Member]	Sep. 30, 2014 Teletrack [Domain]	Sep. 30, 2014 Teletrack [Domain] Data and analytics [Member]	Sep. 30, 2014 Teletrack [Domain] Mortgage origination services [Member]	Sep. 30, 2014 Reclassification [Member]	Sep. 30, 2014 Reclassification [Member] Data and analytics [Member]	Sep. 30, 2014 Reclassification [Member] Mortgage origination services [Member]	Jun. 30, 2014 Restatement Adjustment [Member]	Dec. 31, 2013 Discontinued Operations [Member]	Sep. 30, 2014 Fair Value, Inputs, Level 1 [Member] Fair Value, Measurements, Nonrecurring [Member]
Goodwill [Roll Forward]
Goodwill		$ 1,398,199		$ 689,442	$ 708,757
Accumulated impairment losses		(7,525)		(600)	(6,925)
Goodwill, net	1,779,391	1,468,290	964,966	688,842	701,832	814,425	1,390,674														0
Acquisitions	315,685		285,745					309,448	279,500	29,940	2,300	3,900
Goodwill, Transfers													0	(9,044)	9,044	77,616	0	77,616
Goodwill, Impairment Loss	(3,900)		0		42,200	(3,900)														51,800
Translation adjustments	(3,398)		(3,291)			(107)
Goodwill, Other Changes	2,714		2,714			0
Goodwill, net	$ 1,779,391	$ 1,468,290	$ 964,966	$ 688,842	$ 701,832	$ 814,425	$ 1,390,674														$ 0
Error Corrections and Prior Period Adjustments, Interim Periods of Fiscal Year																			3900