Income Taxes - Components of Income Tax Provision (Benefit) for Continuing Operations (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Income Tax Expense Benefit Continuing Operations [Line Items]
Valuation allowance against net deferred tax assets	$ 5,450	$ 1,579
U.S., Denmark and Malaysia
Income Tax Expense Benefit Continuing Operations [Line Items]
Valuation allowance against net deferred tax assets	$ 3,749	$ 2,683

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant