Preliminary Purchase Price Allocation - S1 Corporation (Detail) (S1 Corporation, USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 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	19,933
Total current assets acquired	183,010
Property and equipment	18,440
Goodwill	265,986
Other noncurrent assets	25,641
Total assets acquired	694,144
Deferred revenue	34,671
Accrued employee compensation	34,689
Other current liabilities	28,416
Total current liabilities acquired	97,776
Noncurrent liabilities acquired	9,084
Total liabilities acquired	106,860
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

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.