Revenue (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 3,289	$ 3,434	$ 9,316	$ 9,700
Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	929	855	2,641	2,624
Other non-606 revenue	8	8	21	25
Revenue	937	863	2,662	2,649
Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,081	2,329	5,917	6,436
Other non-606 revenue	271	242	737	615
Revenue	2,352	2,571	6,654	7,051
Corporate Other And Other Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenue	(22)	(15)	(62)	(61)
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	(22)	(14)	(62)	(60)
Other non-606 revenue	0	(1)	0	(1)
Revenue	(22)	(15)	(62)	(61)
Renewables
Disaggregation of Revenue [Line Items]
Revenue	726	708	1,941	1,744
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	648	672	1,764	1,654
Other non-606 revenue	78	36	177	90
Revenue	726	708	1,941	1,744
Utilities
Disaggregation of Revenue [Line Items]
Revenue	961	880	2,730	2,703
Utilities \| Regulated Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	929	855	2,641	2,624
Other non-606 revenue	8	8	21	25
Revenue	937	863	2,662	2,649
Utilities \| Non-regulated revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	23	16	65	51
Other non-606 revenue	1	1	3	3
Revenue	24	17	68	54
Energy Infrastructure
Disaggregation of Revenue [Line Items]
Revenue	1,623	1,861	4,706	5,239
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	1,431	1,655	4,149	4,717
Other non-606 revenue	192	206	557	522
Revenue	1,623	1,861	4,706	5,239
New Energy Technologies
Disaggregation of Revenue [Line Items]
Revenue	1	0	1	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	1	0	1	74
Other non-606 revenue	0	0	0	1
Revenue	$ 1	$ 0	$ 1	$ 75