Segment and Other Supplemental Information - Regional Segment Revenue and Gross Margin for Company (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information
Revenue	$ 599	$ 623	$ 1,144	$ 1,205
Selling, general and administrative expenses	172	190	346	374
Research and development expenses	51	59	108	122
Impairment of goodwill, acquired intangibles and other assets	0	340	80	340
Income (loss) from operations	87	(262)	45	(232)
Operating segment
Segment Reporting Information
Revenue	599	623	1,144	1,205
Gross margin	315	338	593	625
Operating segment \| Americas Data and Analytics
Segment Reporting Information
Revenue	325	348	620	684
Gross margin	183	204	347	383
Operating segment \| International Data and Analytics
Segment Reporting Information
Revenue	239	237	455	445
Gross margin	116	118	213	211
Operating segment \| Data and Analytics
Segment Reporting Information
Revenue	564	585	1,075	1,129
Gross margin	299	322	560	594
Operating segment \| Marketing Applications
Segment Reporting Information
Revenue	35	38	69	76
Gross margin	16	16	33	31
Unallocated segment
Segment Reporting Information
Stock-based compensation costs	(3)	(3)	(7)	(7)
Amortization of acquisition-related intangible assets costs	0	(6)	(2)	(11)
Acquisition, integration and reorganization-related costs	$ (2)	$ (2)	$ (5)	$ (3)

Acquisition Integration and Reorganization Costs

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Amortization of Intangible Assets, Due to Acquisition

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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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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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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