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Income Taxes - Net Operating Loss Carryforwards (Details) - Foreign $ in Millions	Dec. 31, 2017 USD ($)
Net operating loss carryforwards
Non-U.S. net operating loss carryforwards	$ 794
Net operating loss carryforwards, indefinite carry forward period	557
Net operating loss carryforwards, subject to expiration	$ 237

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws that are not subject to expiration dates.

+ References

No definition available.

+ Details

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws that are subject to expiration dates.

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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