Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill		$ 1,834,399
Accumulated impairment losses		(53,641)
Goodwill, net	$ 1,769,718	1,780,758
Translation adjustments	(11,040)
Goodwill, Other Changes	0
Goodwill, net	1,769,718	1,780,758
Data and Analytics [Member]
Goodwill [Roll Forward]
Goodwill		957,929
Accumulated impairment losses		(600)
Goodwill, net	946,147	957,329
Translation adjustments	(11,082)
Goodwill, Other Changes	(100)
Goodwill, net	946,147	957,329
Technology and Processing Solutions [Member]
Goodwill [Roll Forward]
Goodwill		876,470
Accumulated impairment losses		(53,041)
Goodwill, net	823,571	823,429
Translation adjustments	42
Goodwill, Other Changes	100
Goodwill, net	$ 823,571	$ 823,429