Segment and Other Supplemental Information - Regional Segment Revenue and Gross Margin for Company (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information
Revenue	$ 491	$ 545
Gross profit	251	294
Stock-based compensation costs	(4)	(4)
Amortization of acquisition-related intangible assets costs	0	(2)
Acquisition, integration, reorganization and transformation-related costs	(2)	(3)
Amortization of capitalized software costs	(21)	(16)
Selling, general and administrative expenses	155	174
Research and development expenses	70	57
Impairment of goodwill, acquired intangibles and other assets	0	80
Loss from operations	(1)	(42)
Americas Data and Analytics
Segment Reporting Information
Revenue	267	295
Gross profit	151	175
International Data and Analytics
Segment Reporting Information
Revenue	224	216
Gross profit	100	102
Data and Analytics
Segment Reporting Information
Revenue	491	511
Gross profit	251	277
Marketing Applications
Segment Reporting Information
Revenue	0	34
Gross profit	0	17
Impairment of goodwill, acquired intangibles and other assets	$ 6	$ 80

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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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Amount of expense for amortization of capitalized computer software costs.

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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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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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