Discontinued Operations (Details) $ in Millions		3 Months Ended		6 Months Ended
	Apr. 04, 2016 USD ($) Plant item	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Loss from discontinued operations		$ (2)	$ (2)	$ (3)	$ (2)
Disposed Venezuelan Subsidiaries
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Number of ICSID member states in which award is enforceable | item	150
Expropriated plants | Plant	2
Loss from discontinued operations				$ (3)
Disposed Venezuelan Subsidiaries | Minimum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Litigation settlement amount	$ 485
Disposed Venezuelan Subsidiaries | Maximum
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Loss from discontinued operations					$ (2)