Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Goodwill [Line Items]
Gross Balance prior to the end of year					$ 716,649
Total impairment, beginning of period					(47,432)
Beginning Balance	$ 781,163		$ 669,217
Goodwill from acquisitions	142,287	[1]	121,138	[2]
Foreign currency translation adjustments	(10,189)		(9,192)
Ending Balance	913,261		781,163
Americas [Member]
Goodwill [Line Items]
Gross Balance prior to the end of year					488,698
Total impairment, beginning of period					(47,432)
Beginning Balance	476,482		441,266
Goodwill from acquisitions	2,462	[1]	36,623	[2]
Foreign currency translation adjustments	(1,803)		(1,407)
Ending Balance	477,141		476,482
EMEA [Member]
Goodwill [Line Items]
Gross Balance prior to the end of year					160,158
Beginning Balance	240,303		160,158
Goodwill from acquisitions	139,825	[1]	84,515	[2]
Foreign currency translation adjustments	(3,301)		(4,370)
Ending Balance	376,827		240,303
Asia/Pacific [Member]
Goodwill [Line Items]
Gross Balance prior to the end of year					$ 67,793
Beginning Balance	64,378		67,793
Foreign currency translation adjustments	(5,085)		(3,415)
Ending Balance	$ 59,293		$ 64,378

[1] Goodwill from acquisitions relates to the goodwill recorded for the acquisition of PAY.ON, as well as adjustments to goodwill related to the acquisition of ReD, as discussed in Note 2. The purchase price allocation for PAY.ON is preliminary as of December 31, 2015 and accordingly is subject to future changes during the maximum one-year measurement period.

[2] Goodwill from acquisitions relates to the goodwill recorded for the acquisition of ReD, as well as adjustments to goodwill related to the acquisitions of OPAY, ORCC, and PTESA as discussed in Note 2, Acquisitions.