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Segment Information - Revenue by Geographic Area (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 5,223	$ 7,455
Operating Segments
Segment Reporting Information [Line Items]
Revenue	5,223	7,455
Operating Segments | North America
Segment Reporting Information [Line Items]
Revenue	972	2,180
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Revenue	1,038	1,046
Operating Segments | Europe/CIS/Africa
Segment Reporting Information [Line Items]
Revenue	1,256	1,752
Operating Segments | Middle East & Asia
Segment Reporting Information [Line Items]
Revenue	1,917	2,427
Eliminations & other
Segment Reporting Information [Line Items]
Revenue	$ 40	$ 50

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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