Segments (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Total Revenue	$ 3,434	$ 3,627	$ 9,700	$ 9,557
Number of strategic business units | segment			4
Number of reportable segments | segment			4
Reconciliation To Income From Continuing Operations Before Taxes
Income (loss) from continuing operations before taxes and equity in earnings of affiliates	414	617	$ 683	721
Net equity in losses of affiliates	(14)	(26)	(43)	(54)
Impairment losses	(145)	(17)	(318)	(497)
Assets
Long-Lived Assets	27,912		27,912		$ 23,395
Net income	291	446	461	481
Income Tax Expense (Benefit)	109	145	179	186
Interest income	(144)	(100)	(398)	(270)
EBITDA	868	1,033	2,044	2,010
Depreciation and amortization	286	266	836	800
Interest expense	326	276	966	813
Adjustment for noncontrolling interests and redeemable stock of subsidiaries	(183)	(174)	(508)	(486)
Less: Income taxes expense (benefit), interest expense (income) and depreciation and amortization from equity affiliates	27	36	93	93
Unrealized derivative and equity securities losses (gains)	10	(8)	3	0
Interest income recognized under service concession arrangements	18	19	54	58
Unrealized foreign currency losses (gains)	97	3	161	23
Disposition/ acquisition losses	8	4	21	36
Loss on extinguishment of debt	0	1	1	7
Total Adjusted EBITDA	990	931	2,187	2,238
Other noncurrent assets, excluding ROU assets for operating leases	2,763		2,763		2,623
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(44)	(49)	(157)	(160)
Assets
Adjusted EBITDA	1	(3)	(20)	31
Corporate Other And Other Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(15)	(25)	(61)	(79)
Corporate Other And Other Eliminations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	29	24	96	81
Assets
Long-Lived Assets	10		10		17
Corporate Other And Other Eliminations [Member] | Corporate, Non-Segment
Assets
Adjusted EBITDA	8	9	20	10
Renewables
Segment Reporting Information [Line Items]
Total Revenue	708	532	1,744	1,407
Renewables | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	708	532	1,744	1,407
Assets
Long-Lived Assets	13,618		13,618		9,533
Adjusted EBITDA	267	195	557	476
Utilities
Segment Reporting Information [Line Items]
Total Revenue	880	994	2,703	2,674
Utilities | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	880	994	2,703	2,674
Assets
Long-Lived Assets	6,809		6,809		6,311
Adjusted EBITDA	216	137	526	456
Energy Infrastructure
Segment Reporting Information [Line Items]
Total Revenue	1,861	2,126	5,239	5,553
Energy Infrastructure | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	1,861	2,126	5,239	5,553
Assets
Long-Lived Assets	7,467		7,467		7,532
Adjusted EBITDA	520	620	1,165	1,353
New Energy Technologies
Segment Reporting Information [Line Items]
Total Revenue	0	0	75	2
New Energy Technologies | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	0	0	75	2
Assets
Long-Lived Assets	8		8		$ 2
Adjusted EBITDA	$ (22)	$ (27)	$ (61)	$ (88)