Segments and Geographic Information Segment and Geographic Information (Adjusted Pre-Tax Contributions & Reconcilliation of Income Before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Adjusted Pretax Contribution	$ 1,418	$ 1,247	$ 1,240
Reconciliation To Income From Continuing Operations Before Taxes
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES AND EQUITY IN EARNINGS OF AFFILIATES	(1,064)	488	1,001
Net equity in losses of affiliates	(24)	(123)	(172)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	644	192	277
Pre-tax contribution	(444)	173	552
Unrealized derivative and equity securities losses (gains)	1	(3)	(113)
Unrealized foreign currency losses (gains)	(14)	10	(36)
Disposition/acquisition losses	(861)	(112)	(12)
Impairment losses	(1,153)	(928)	(406)
Loss on extinguishment of debt	(91)	(223)	(121)
Gain (Loss) on Contract Termination	(256)	(182)	0
Operating Segments \| US and Utilities SBU
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Adjusted Pretax Contribution	660	505	569
Reconciliation To Income From Continuing Operations Before Taxes
Net equity in losses of affiliates	83	(8)	11
Operating Segments \| South America
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Adjusted Pretax Contribution	423	534	504
Reconciliation To Income From Continuing Operations Before Taxes
Net equity in losses of affiliates	0	(80)	(129)
Operating Segments \| MCAC SBU
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Adjusted Pretax Contribution	314	287	367
Reconciliation To Income From Continuing Operations Before Taxes
Net equity in losses of affiliates	(23)	(11)	(13)
Operating Segments \| EURASIA [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Adjusted Pretax Contribution	196	177	159
Reconciliation To Income From Continuing Operations Before Taxes
Net equity in losses of affiliates	2	4	(9)
Intersegment Eliminations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Adjusted Pretax Contribution	7	0	(12)
Corporate, Non-Segment [Member] \| Corporate and Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment Reporting Information Adjusted Pretax Contribution	(182)	(256)	(347)
Reconciliation To Income From Continuing Operations Before Taxes
Net equity in losses of affiliates	$ (86)	$ (28)	$ (32)

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