Segments (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) segment	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Total Revenue	$ 3,239	$ 2,852
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	$ 265	264
Net equity in losses of affiliates	(4)	(33)
Impairment losses	(9)	(1)
Assets
Long-Lived Assets	24,640		$ 23,395
Net income	189	171
Income Tax Expense (Benefit)	72	60
Interest income	(123)	(75)
EBITDA	741	684
Depreciation and amortization	273	270
Interest expense	330	258
Adjustment for noncontrolling interests and redeemable stock of subsidiaries	(170)	(156)
Less: Income taxes expense (benefit), interest expense (income) and depreciation and amortization from equity affiliates	39	34
Unrealized derivative and equity securities losses (gains)	(39)	42
Interest income recognized under service concession arrangements	18	19
Unrealized foreign currency losses (gains)	32	(18)
Disposition/ acquisition losses	(3)	9
Loss on extinguishment of debt	1	6
Total Adjusted EBITDA	628	621
Other noncurrent assets, excluding ROU assets for operating leases	2,534		2,623
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(52)	(57)
Assets
Adjusted EBITDA	6	(5)
Corporate Other And Other Eliminations [Member]
Segment Reporting Information [Line Items]
Total Revenue	(25)	(34)
Corporate Other And Other Eliminations [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	27	23
Assets
Long-Lived Assets	15		17
Corporate Other And Other Eliminations [Member] | Corporate, Non-Segment
Assets
Adjusted EBITDA	(1)	4
Renewables
Segment Reporting Information [Line Items]
Total Revenue	495	420
Renewables | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	495	420
Assets
Long-Lived Assets	10,611		9,533
Adjusted EBITDA	124	119
Utilities
Segment Reporting Information [Line Items]
Total Revenue	971	859
Utilities | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	971	859
Assets
Long-Lived Assets	6,452		6,311
Adjusted EBITDA	162	184
Energy Infrastructure
Segment Reporting Information [Line Items]
Total Revenue	1,724	1,607
Energy Infrastructure | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	1,724	1,607
Assets
Long-Lived Assets	7,561		7,532
Adjusted EBITDA	363	354
New Energy Technologies
Segment Reporting Information [Line Items]
Total Revenue	74	0
New Energy Technologies | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenue	74	0
Assets
Long-Lived Assets	1		$ 2
Adjusted EBITDA	$ (26)	$ (35)