Condensed Consolidated Financial Statements - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2016	Dec. 31, 2015
Goodwill [Line Items]
Gross Balance prior to the end of year			$ 960,693
Total impairment, beginning of period			(47,432)
Beginning Balance		$ 913,261
Goodwill from acquisitions	[1]	665
Foreign currency translation adjustments		1,731
Ending Balance		915,657
Americas Segment [Member]
Goodwill [Line Items]
Gross Balance prior to the end of year			524,573
Total impairment, beginning of period			(47,432)
Beginning Balance		477,141
Foreign currency translation adjustments		422
Ending Balance		477,563
EMEA Segment [Member]
Goodwill [Line Items]
Gross Balance prior to the end of year			376,827
Beginning Balance		376,827
Goodwill from acquisitions	[1]	665
Foreign currency translation adjustments		(997)
Ending Balance		376,495
Asia/Pacific Segment [Member]
Goodwill [Line Items]
Gross Balance prior to the end of year			$ 59,293
Beginning Balance		59,293
Foreign currency translation adjustments		2,306
Ending Balance		$ 61,599

[1] Goodwill from acquisitions relates to adjustments in the goodwill recorded for the acquisition of PAY.ON AG and its subsidiaries (collectively "PAY.ON") as discussed in Note 2, Acquisitions. The purchase price allocation for PAY.ON is preliminary as of June 30, 2016 and accordingly is subject to future changes during the maximum one-year measurement period.