Notes Payable and Long-Term Debt - Maturities and foreign subsidiary obligations (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Maturities of long-term debt
2017	$ 17
2018	21
2019	33
2020	42
2021	38
Thereafter	$ 366
Foreign subsidiary obligations due 2018 through 2023
Notes Payable and Long Term Debt
Weighted average interest rate (as a percent)	22.39%	30.23%
Foreign subsidiary obligations due 2018 through 2023 \| Property, Plant and Equipment
Notes Payable and Long Term Debt
Collateral amount	$ 4

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Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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Principal amount of long-term debt and capital lease obligation maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Principal amount of long-term debt and capital lease obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Weighted average interest rate of long-term debt outstanding.

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