Notes Payable and Long-Term Debt - Maturities and Argentine subsidiary (Details) $ in Millions	12 Months Ended
Dec. 31, 2015 USD ($) loan
Maturities of long-term debt
2016	$ 4
2017	17
2018	21
2019	34
2020	43
Thereafter	$ 404
Argentine subsidiary
Notes Payable and Long Term Debt
Number of loans obtained \| loan	5
Time period the interest rate is fixed on loans	12 months
Time period of fixed deposits to determine average interest rate paid by retail banks	30 days
Minimum amount of fixed deposits to determine average interest rates paid by retail banks	$ 1
Weighted average interest rate (as a percent)	30.23%
Argentine subsidiary \| Property, Plant and Equipment
Notes Payable and Long Term Debt
Collateral amount	$ 3
Argentine subsidiary \| Minimum
Notes Payable and Long Term Debt
Interest rate (as a percent)	15.00%
Argentine subsidiary \| Maximum
Notes Payable and Long Term Debt
Interest rate (as a percent)	32.00%

Minimum amount of fixed deposits to determine average interest rates paid by retail banks.

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Time period of fixed deposits to determine average interest rate paid by retail banks.

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Represents the number of loans obtained.

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Represents the time period that the interest rate is fixed on loans.

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- Definition

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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Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Principal amount of long-term debt and capital lease obligation maturing after 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 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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- Definition

Weighted average interest rate of long-term debt outstanding.

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