Fair Value Measurements and Financial Instruments (Details 4) - USD ($) $ in Millions |
Jun. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Other current assets | ||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Marketable securities | $ 144 | $ 23 |
| Other current assets | Bonds Issued By Argentinian Government | ||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Marketable securities | 11 | |
| Assets | ||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Held-to-maturity securities | 11 | |
| Fair Value, Inputs, Level 1 | Other current assets | Deposits | ||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Marketable securities | 144 | |
| Fair Value, Inputs, Level 2 | Assets | ||
| Schedule of Available-for-sale Securities [Line Items] | ||
| Held-to-maturity securities, fair value | $ 11 |