Revenue (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 2,942	$ 3,027	$ 6,027	$ 6,266
Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	865	825	1,712	1,769
Other non-606 revenue	7	9	13	17
Revenue	872	834	1,725	1,786
Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,861	1,992	3,836	4,107
Other non-606 revenue	209	201	466	373
Revenue	2,070	2,193	4,302	4,480
Corporate Other And Other Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	(19)	(21)	(40)	(46)
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	(19)	(21)	(40)	(46)
Other non-606 revenue	0	0	0	0
Revenue	(19)	(21)	(40)	(46)
Renewables
Disaggregation of Revenue [Line Items]
Revenue	596	541	1,215	1,036
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	546	505	1,116	982
Other non-606 revenue	50	36	99	54
Revenue	596	541	1,215	1,036
Utilities
Disaggregation of Revenue [Line Items]
Revenue	896	852	1,769	1,823
Utilities \| Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	865	825	1,712	1,769
Other non-606 revenue	7	9	13	17
Revenue	872	834	1,725	1,786
Utilities \| Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	23	18	42	35
Other non-606 revenue	1	0	2	2
Revenue	24	18	44	37
Energy Infrastructure
Disaggregation of Revenue [Line Items]
Revenue	1,469	1,654	3,083	3,378
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	1,311	1,490	2,718	3,062
Other non-606 revenue	158	164	365	316
Revenue	1,469	1,654	3,083	3,378
New Energy Technologies
Disaggregation of Revenue [Line Items]
Revenue	0	1	0	75
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	0	0	74
Other non-606 revenue	0	1	0	1
Revenue	$ 0	$ 1	$ 0	$ 75