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