Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair value of investments in debt securities classified as held-to-maturity.

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Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair Value Measurements and Financial Instruments (Details 4) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Other current assets
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	$ 188	$ 61
Assets
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity Securities	61
Held-to-maturity Securities, Fair Value	93
Fair Value, Inputs, Level 1 \| Other current assets \| Deposits
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	188
Fair Value, Inputs, Level 2 \| Other current assets \| Bonds Issued By Argentinian Government
Schedule of Available-for-sale Securities [Line Items]
Marketable securities	57
Fair Value, Inputs, Level 2 \| Other assets \| Bonds Issued By Argentinian Government \| Estimate of Fair Value Measurement
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities	$ 4