Segments (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) segment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Total Revenue	$ 3,027	$ 3,078	$ 6,266	$ 5,930
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	4	(160)	$ 269	104
Net equity in earnings (losses) of affiliates	(25)	5	(29)	(28)
Impairment losses	(164)	(479)	(173)	(480)
Assets
Long-Lived Assets	26,452		26,452		$ 23,395
Net income	(19)	(136)	170	35
Income Tax Expense (Benefit)	(2)	(19)	70	41
Interest income	(131)	(95)	(254)	(170)
EBITDA	435	293	1,176	977
Depreciation and amortization	277	264	550	534
Interest expense	310	279	640	537
Adjustment for noncontrolling interests and redeemable stock of subsidiaries	(155)	(156)	(325)	(312)
Less: Income taxes expense (benefit), interest expense (income) and depreciation and amortization from equity affiliates	27	23	66	57
Unrealized derivative and equity securities losses (gains)	32	(34)	(7)	8
Interest income recognized under service concession arrangements	18	20	36	39
Unrealized foreign currency losses (gains)	32	38	64	20
Disposition/ acquisition losses	16	23	13	32
Loss on extinguishment of debt	0	0	1	6
Total Adjusted EBITDA	569	686	1,197	1,307
Other noncurrent assets, excluding ROU assets for operating leases	2,774		2,774		2,623
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(61)	(54)	(113)	(111)
Assets
Adjusted EBITDA	(27)	39	(21)	34
Corporate Other And Other Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(21)	(20)	(46)	(54)
Corporate Other And Other Eliminations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	40	34	67	57
Assets
Long-Lived Assets	16		16		17
Corporate Other And Other Eliminations [Member] | Corporate, Non-Segment
Assets
Adjusted EBITDA	13	(3)	12	1
Renewables
Segment Reporting Information [Line Items]
Total Revenue	541	455	1,036	875
Renewables | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	541	455	1,036	875
Assets
Long-Lived Assets	12,220		12,220		9,533
Adjusted EBITDA	166	162	290	281
Utilities
Segment Reporting Information [Line Items]
Total Revenue	852	821	1,823	1,680
Utilities | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	852	821	1,823	1,680
Assets
Long-Lived Assets	6,602		6,602		6,311
Adjusted EBITDA	148	135	310	319
Energy Infrastructure
Segment Reporting Information [Line Items]
Total Revenue	1,654	1,820	3,378	3,427
Energy Infrastructure | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	1,654	1,820	3,378	3,427
Assets
Long-Lived Assets	7,613		7,613		7,532
Adjusted EBITDA	282	379	645	733
New Energy Technologies
Segment Reporting Information [Line Items]
Total Revenue	1	2	75	2
New Energy Technologies | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	1	2	75	2
Assets
Long-Lived Assets	1		1		$ 2
Adjusted EBITDA	$ (13)	$ (26)	$ (39)	$ (61)