Goodwill (Tables)

6 Months Ended

Jun. 30, 2011

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

A reconciliation of the changes in the carrying amount of goodwill and accumulated impairment losses, by reportable segment, for the six months ended June 30, 2011, is as follows:

(in thousands)	Data and Analytics			Business and Information Services			Consolidated
Balance at December 31, 2010
Goodwill	$	750,172		$	721,480		$	1,471,652
Accumulated impairment losses	(19,734		)	(6,925		)	(26,659		)
Goodwill	$	730,438		$	714,555		$	1,444,993
Impairment loss	—			—			—
Acquisitions	162,882			18,898			181,780
Other/post acquisition adjustments	810			—			810
Balance at June 30, 2011
Goodwill	$	913,864		$	740,378		$	1,654,242
Accumulated impairment losses	(19,734		)	(6,925		)	(26,659		)
Goodwill	$	894,130		$	733,453		$	1,627,583