Acquisitions - Preliminary Purchase Price Allocation of Official Payments Holdings, Online Resources Corporation and PTESA (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	773,416us-gaap_Goodwill	$ 781,163us-gaap_Goodwill
Retail Decisions [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	795
Billed and accrued receivables, net	10,106
Deferred income taxes, net	282
Other current assets	9,931
Total current assets acquired	21,114
Property and equipment	3,354
Goodwill	134,824
Deferred income taxes	1,622
Other noncurrent assets	416
Total assets acquired	248,926
Accounts payable	4,624
Employee compensation	6,481
Other current liabilities	6,168
Total current liabilities acquired	17,273
Deferred income taxes	26,404
Other noncurrent liabilities	164
Total liabilities acquired	43,841
Net assets acquired	205,085
Software [Member] \| Retail Decisions [Member]
Business Acquisition [Line Items]
Amortizable intangible assets	33,136
Software [Member] \| Retail Decisions [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful lives	5 years
Software [Member] \| Retail Decisions [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful lives	7 years
Customer relationships [Member] \| Retail Decisions [Member]
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful lives	18 years
Amortizable intangible assets	50,480
Trademarks [Member] \| Retail Decisions [Member]
Business Acquisition [Line Items]
Acquired intangible assets, weighted-average useful lives	5 years
Amortizable intangible assets	3,980

Amount of liabilities incurred for employee compensation.

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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.

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-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

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Amount of assets acquired at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards that are expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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