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Business Segments and Geographic Areas - Revenues by Country Based on Sales Destination of Products or Services (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,692	$ 1,646	$ 1,724	$ 2,189	$ 2,722	$ 3,306	$ 3,909	$ 4,820	$ 7,251	$ 14,757	$ 21,440
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,961	3,640	6,097
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									557	1,623	1,905
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									495	1,835	3,472
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									340	1,035	1,157
Norway [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									339	555	881
United Arab Emirates [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									334	532	459
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									299	634	715
Saudi Arabia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									258	416	444
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									242	605	1,299
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									217	365	645
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 2,209	$ 3,517	$ 4,366

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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