Income Taxes (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2014
Income Taxes [Line Items]
Tax assets related to net operating loss carry-forwards related to certain international subsidiaries	$ 329,000,000	$ 329,000,000	$ 305,000,000
Deferred Tax Assets, Valuation Allowance	329,000,000	329,000,000	347,000,000
Valuation Allowance on Deferred Tax Assets, Recognized in Earnings	82,000,000
Deferred Tax Assets, Tax Credit Carryforwards		107,000,000
Prior Period Income Tax Benefit Recognized in the Current Period	84,000,000	55,000,000
Valuation Allowance on Deferred Tax Assets, Recognized in Earnings, Per Share	$ 0.12
Tax assets related to net operating loss carry-forwards related to capital losses	24,000,000	24,000,000	21,000,000
Tax assets related to excess foreign tax credits	26,000,000	26,000,000	76,000,000
State tax attributes	74,000,000	74,000,000	70,000,000
Approximate undistributed earnings of foreign subsidiaries and affiliated corporate joint venture companies accounted for on the equity method			8,600,000,000
Accrued interest and penalties on unrecognized tax benefits	18,000,000	18,000,000	21,000,000
Positive impact on the tax expense if the total amount of unrecognized tax benefits were recognized by the Company at one time			62,000,000
Capital Loss Carryforward [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance			21,000,000
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance	41,000,000	41,000,000
State Income Tax Attributes Net of Federal Tax Benefit [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance	53,000,000	53,000,000	51,000,000
Brazilian Federal Revenue Service [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance	17,000,000	17,000,000
Number of separate tax assessments			3
Tax assessment including penalty and interest			493,000,000
Estimated additional tax assessment			57,000,000
Argentine Tax Authorities [Member]
Income Taxes [Line Items]
Estimated additional tax assessment			325,000,000
Tax assessment including interest			93,000,000
Foreign [Member]
Income Taxes [Line Items]
Tax assets related to net operating loss carry-forwards related to certain international subsidiaries with no expiration date			274,000,000
Tax assets related to net operating loss carry-forwards related to certain international subsidiaries with expiration date			31,000,000
Valuation allowance recorded against tax assets related to net operating loss carry-forwards related to certain international subsidiaries	196,000,000	196,000,000	218,000,000
German Tax Authority [Member]
Income Taxes [Line Items]
Deferred Tax Assets, Valuation Allowance	$ 103,000,000	$ 103,000,000