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Software and Other Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Software, net	$ 188,743		$ 188,743		$ 237,941
Software, accumulated amortization	183,400		183,400		158,900
Other intangible assets amortization expense	5,300	$ 5,600	16,400	$ 17,100
Software Marketed for External Sale [Member]
Finite-Lived Intangible Assets [Line Items]
Software, net	48,300		48,300		70,100
Software, amortization expense	2,900	3,400	$ 9,200	10,900
Software Marketed for External Sale [Member] | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			3 years
Software Marketed for External Sale [Member] | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			10 years
Software Acquired or Developed for Internal Use
Finite-Lived Intangible Assets [Line Items]
Software, net	140,400		$ 140,400		$ 167,800
Software, amortization expense	$ 11,300	$ 9,400	$ 34,200	$ 27,000
Software Acquired or Developed for Internal Use | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			3 years
Software Acquired or Developed for Internal Use | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			10 years

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Amount of expense for amortization of capitalized computer software costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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