Segments (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Total Revenue	$ 2,338	$ 2,650
Number of strategic business units | segment	4
Number of reportable segments | segment	4
Adjusted PTC
Adjusted Pretax Contribution	$ 250	272
Reconciliation To Income From Continuing Operations Before Taxes
Unrealized derivative losses (gains)	16	(3)
Unrealized foreign currency transaction losses (gains)	(9)	(11)
Disposition/acquisition losses (gains)	(1)	(9)
Impairment losses	(53)	(2)
Extinguishment of debt losses (gains)	(4)	(8)
Pretax contribution	199	239
Net equity in losses of affiliates	(2)	(6)
Less: Income (loss) from continuing operations before taxes, attributable to noncontrolling interests	119	109
Income (loss) from continuing operations before taxes and equity in earnings of affiliates	320	354
Assets
Total Assets	34,142		$ 33,648
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(30)	(12)
Adjusted PTC
Adjusted Pretax Contribution	(4)	1
US and Utilities [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	971	1,019
Adjusted PTC
Adjusted Pretax Contribution	71	122
Assets
Total Assets	13,547		13,334
South America [Member]
Segment Reporting Information [Line Items]
Total Revenue	712	845
South America [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	712	845
Adjusted PTC
Adjusted Pretax Contribution	119	115
Assets
Total Assets	11,197		11,314
MCAC [Member]
Segment Reporting Information [Line Items]
Total Revenue	432	450
MCAC [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	432	450
Adjusted PTC
Adjusted Pretax Contribution	78	50
Assets
Total Assets	5,017		4,770
EURASIA [Member]
Segment Reporting Information [Line Items]
Total Revenue	225	339
EURASIA [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	225	339
Adjusted PTC
Adjusted Pretax Contribution	44	56
Assets
Total Assets	3,847		3,990
Corporate Other And Other Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(2)	(3)
Corporate Other And Other Eliminations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	28	9
Adjusted PTC
Adjusted Pretax Contribution	(58)	$ (72)
Assets
Total Assets	$ 534		$ 240