Segment and Other Supplemental Information - Regional Segment Revenue and Gross Margin for Company (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information
Revenue	$ 526	$ 552	$ 1,530	$ 1,696
Gross profit	270	313	786	939
Stock-based compensation costs	3	3	10	11
Amortization of acquisition-related intangible asset costs	0	0	0	2
Acquisition, integration, reorganization and transformation-related costs	2	1	6	6
Amortization of capitalized software costs	15	15	54	47
Selling, general and administrative expenses	161	159	481	505
Research and development expenses	82	46	230	154
Impairment of goodwill, acquired intangibles and other assets	0	0	0	80
Income from operations	7	89	5	134
Americas Data and Analytics
Segment Reporting Information
Revenue	292	317	830	937
Gross profit	173	195	482	564
International Data and Analytics
Segment Reporting Information
Revenue	234	235	700	690
Gross profit	97	118	304	341
Data and Analytics
Segment Reporting Information
Revenue	526	552	1,530	1,627
Gross profit	270	313	786	905
Marketing Applications
Segment Reporting Information
Revenue	0	0	0	69
Gross profit	$ 0	$ 0	0	34
Impairment of goodwill, acquired intangibles and other assets			$ 1	$ 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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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The net result for the period of deducting operating expenses from operating revenues.

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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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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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