Summary of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassifications
Amortization of Intangible Assets	$ 113,000,000	$ 75,000,000	$ 27,000,000
Receivables
Allowance for Doubtful Accounts Receivable	72,000,000	70,000,000
Trade accounts receivable due from unconsolidated affiliates	232,000,000	35,000,000
Property, Plant, and Equipment
Capitalized interest on major construction projects	20,000,000	11,000,000	18,000,000
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Asset Impairment	11,000,000	21,000,000	0
Asset Abandonments and Write-Downs
Other Asset Impairment Charges	17,000,000	108,000,000	35,000,000
Revenues
Revenues from unconsolidated affiliates	4,200,000,000	5,000,000,000	5,800,000,000
Research and Development
Research and development expenses, net of expenditures subsequently reimbursed by government grants	123,000,000	122,000,000	79,000,000
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Net Cash Provided by (Used in) Operating Activities	1,475,000,000	2,470,000,000	4,943,000,000
Restricted Cash and Cash Equivalents	$ 69,000,000	93,000,000	104,000,000
Minimum [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Asset, Useful Life	2 years
Minimum [Member] | Building [Member]
Property, Plant, and Equipment
Property, Plant and Equipment, Useful Life	15 years
Minimum [Member] | Machinery And Equipment [Member]
Property, Plant, and Equipment
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Asset, Useful Life	50 years
Maximum [Member] | Building [Member]
Property, Plant, and Equipment
Property, Plant and Equipment, Useful Life	40 years
Maximum [Member] | Machinery And Equipment [Member]
Property, Plant, and Equipment
Property, Plant and Equipment, Useful Life	40 years
Selling, General and Administrative Expenses [Member]
Reclassifications
Amortization of Intangible Assets	$ 71,000,000	29,000,000	26,000,000
New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Net Cash Provided by (Used in) Operating Activities		(11,000,000)	(19,000,000)
Restricted Cash and Cash Equivalents		$ 93,000,000	$ 104,000,000