Goodwill and Intangible Assets - Components of Intangible Assets by Major Class (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 804,272	$ 970,084
Accumulated amortization	(349,747)	(374,377)
Net carrying value	454,525	595,707
Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value	359,235	478,735
Accumulated amortization	(107,075)	(125,359)
Net carrying value	252,160	353,376
Trademarks/trade names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value	223,182	257,282
Accumulated amortization	(75,518)	(75,696)
Net carrying value	147,664	181,586
Technology/software [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value	189,405	199,778
Accumulated amortization	(163,236)	(168,481)
Net carrying value	26,169	31,297
Proprietary process [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value		3,800
Accumulated amortization		(2,269)
Net carrying value		1,531
Proprietary data [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value	28,527	28,527
Accumulated amortization	(3,469)	(2,326)
Net carrying value	25,058	26,201
Subtotal [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value	800,349	968,122
Accumulated amortization	(349,298)	(374,131)
Net carrying value	451,051	593,991
Foreign exchange translation adjustment [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying value	3,923	1,962
Accumulated amortization	(449)	(246)
Net carrying value	$ 3,474	$ 1,716