Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 3,027	$ 3,078	$ 6,266	$ 5,930
Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	825	794	1,769	1,622
Other non-606 revenue	9	8	17	15
Revenue	834	802	1,786	1,637
Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,992	2,081	4,107	3,996
Other non-606 revenue	201	195	373	297
Revenue	2,193	2,276	4,480	4,293
Corporate Other And Other Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	(21)	(20)	(46)	(54)
Corporate Other And Other Eliminations [Member] | Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Other non-606 revenue	0	0	0	0
Revenue	0	0	0	0
Corporate Other And Other Eliminations [Member] | Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	(21)	(20)	(46)	(54)
Other non-606 revenue	0	0	0	0
Revenue	(21)	(20)	(46)	(54)
Renewables
Disaggregation of Revenue [Line Items]
Revenue	541	455	1,036	875
Renewables | Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Other non-606 revenue	0	0	0	0
Revenue	0	0	0	0
Renewables | Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	505	406	982	831
Other non-606 revenue	36	49	54	44
Revenue	541	455	1,036	875
Utilities
Disaggregation of Revenue [Line Items]
Revenue	852	821	1,823	1,680
Utilities | Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	825	794	1,769	1,622
Other non-606 revenue	9	8	17	15
Revenue	834	802	1,786	1,637
Utilities | Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	18	18	35	41
Other non-606 revenue	0	1	2	2
Revenue	18	19	37	43
Energy Infrastructure
Disaggregation of Revenue [Line Items]
Revenue	1,654	1,820	3,378	3,427
Energy Infrastructure | Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Other non-606 revenue	0	0	0	0
Revenue	0	0	0	0
Energy Infrastructure | Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,490	1,676	3,062	3,177
Other non-606 revenue	164	144	316	250
Revenue	1,654	1,820	3,378	3,427
New Energy Technologies
Disaggregation of Revenue [Line Items]
Revenue	1	2	75	2
New Energy Technologies | Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	0	0	0
Other non-606 revenue	0	0	0	0
Revenue	0	0	0	0
New Energy Technologies | Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	0	1	74	1
Other non-606 revenue	1	1	1	1
Revenue	$ 1	$ 2	$ 75	$ 2