Segments and Geographic Information Segment and Geographic Information (Adjusted Pre-Tax Contributions & Reconcilliation of Income Before Income Taxes) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Adjusted PTC
External Adjusted Pre-Tax Contribution	$ 1,321	$ 1,207	$ 1,339
Reconciliation To Income From Continuing Operations Before Taxes
Unrealized derivative gains (losses)	135	57	(120)
Unrealized foreign currency gains (losses)	(110)	(41)	13
Disposition/acquisition gains	361	30	206
Impairment losses	(416)	(588)	(1,951)
Loss on extinguishment of debt	(274)	(225)	(16)
Pre-tax contribution	1,017	440	(529)
Add: Income from continuing operations before taxes, attributable to noncontrolling interests	578	633	794
Less: Net equity in earnings of affiliates	19	25	35
INCOME FROM CONTINUING OPERATIONS BEFORE TAXES AND EQUITY IN EARNINGS OF AFFILIATES	1,576	1,048	230
US SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	455	451	443
Andes SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	427	372	353
Brazil SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	245	215	324
MCAC SBU (El Salvador)
Adjusted PTC
External Adjusted Pre-Tax Contribution	378	351	397
Europe SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	353	352	373
Asia SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	48	144	203
Corporate and Other
Adjusted PTC
External Adjusted Pre-Tax Contribution	(585)	(678)	(754)
Operating Segments
Adjusted PTC
External Adjusted Pre-Tax Contribution	1,321	1,207	1,339
Operating Segments | US SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	445	440	403
Operating Segments | Andes SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	421	353	369
Operating Segments | Brazil SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	242	212	321
Operating Segments | MCAC SBU (El Salvador)
Adjusted PTC
External Adjusted Pre-Tax Contribution	352	339	387
Operating Segments | Europe SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	348	345	375
Operating Segments | Asia SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	46	142	201
Operating Segments | Corporate and Other
Adjusted PTC
External Adjusted Pre-Tax Contribution	(533)	(624)	(717)
Intersegment Eliminations
Adjusted PTC
External Adjusted Pre-Tax Contribution	0	0	0
Intersegment Eliminations | US SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	10	11	40
Intersegment Eliminations | Andes SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	6	19	(16)
Intersegment Eliminations | Brazil SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	3	3	3
Intersegment Eliminations | MCAC SBU (El Salvador)
Adjusted PTC
External Adjusted Pre-Tax Contribution	26	12	10
Intersegment Eliminations | Europe SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	5	7	(2)
Intersegment Eliminations | Asia SBU
Adjusted PTC
External Adjusted Pre-Tax Contribution	2	2	2
Intersegment Eliminations | Corporate and Other
Adjusted PTC
External Adjusted Pre-Tax Contribution	$ (52)	$ (54)	$ (37)