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
-Publisher FASB
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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	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Current Assets
Schedule of Available for Sale Securities [Line Items]
Marketable securities	$ 23	$ 61
Assets
Schedule of Available for Sale Securities [Line Items]
Held-to-maturity securities	52	61
Bonds Issued By Argentinian Government
Schedule of Available for Sale Securities [Line Items]
Available-for-sale securities		0	$ 399	$ 685
Bonds Issued By Argentinian Government \| Other Current Assets
Schedule of Available for Sale Securities [Line Items]
Marketable securities	48
Bonds Issued By Argentinian Government \| Other Assets
Schedule of Available for Sale Securities [Line Items]
Available-for-sale securities	4
Fair Value, Inputs, Level 1 \| Deposits \| Other Current Assets
Schedule of Available for Sale Securities [Line Items]
Marketable securities	23
Fair Value, Inputs, Level 2 \| Assets
Schedule of Available for Sale Securities [Line Items]
Held-to-maturity securities, fair value	$ 64	$ 77