Preliminary Purchase Price Allocation - S One Corporation (Detail) (S1 Corporation, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Cash and cash equivalents	97,748
Billed and accrued receivables, net	65,329
Other current assets	16,791
Total current assets acquired	179,868
Property and equipment	18,440
Goodwill	256,244
Deferred income taxes, net	40,634
Other noncurrent assets	11,004
Total assets acquired	707,257
Deferred revenue	34,671
Accrued employee compensation	34,689
Other current liabilities	28,387
Total current liabilities acquired	97,747
Deferred income tax	15,795
Other noncurrent liabilities acquired	6,431
Total liabilities acquired	119,973
Net assets acquired	587,284
Software
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Amortizable intangible assets	87,517
Software | Minimum
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Acquired intangible assets, weighted-average useful lives	5 years
Software | Maximum
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Acquired intangible assets, weighted-average useful lives	10 years
Customer relationships
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Amortizable intangible assets	108,690
Customer relationships | Minimum
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Acquired intangible assets, weighted-average useful lives	10 years
Customer relationships | Maximum
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Acquired intangible assets, weighted-average useful lives	20 years
Trademarks
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Amortizable intangible assets	4,500
Acquired intangible assets, weighted-average useful lives	3 years
Covenant not to compete
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Amortizable intangible assets	360
Acquired intangible assets, weighted-average useful lives	3 years