Changes in Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Goodwill [Line Items]
Gross Balance prior to the beginning of the period	$ 261,576
Total impairment prior to the beginning of the year	(47,432)
Beginning Balance	214,144
Addition-acquisition of S1	271,287	[1]
Foreign currency translation adjustments	2,104
Ending Balance	487,535
Unallocated
Goodwill [Line Items]
Addition-acquisition of S1	271,286	[1]
Ending Balance	271,286
Americas
Goodwill [Line Items]
Gross Balance prior to the beginning of the period	198,598
Total impairment prior to the beginning of the year	(47,432)
Beginning Balance	151,166
Foreign currency translation adjustments	58
Ending Balance	151,224
EMEA
Goodwill [Line Items]
Gross Balance prior to the beginning of the period	43,612
Beginning Balance	43,612
Foreign currency translation adjustments	1,386
Ending Balance	44,998
Asia /Pacific
Goodwill [Line Items]
Gross Balance prior to the beginning of the period	19,366
Beginning Balance	19,366
Foreign currency translation adjustments	661
Ending Balance	$ 20,027

[1] Addition relates to the goodwill acquired in the acquisition of S1 as discussed in Note 2. The Company has not yet determined the allocation of the goodwill to the segments due to the preliminary nature of the allocation of the purchase price as discussed in Note 2 and expects to complete the allocation of goodwill during the three months ended June 30, 2012.