Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 89,816	$ 86,128	$ 73,305
Regulated assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	107,646	103,397
Accumulated depreciation and amortization	(32,680)	(30,662)
Net operating assets	74,966	72,735
Construction work-in-progress	3,800	3,200
Regulated assets | Utility generation, transmission and distribution systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 90,223	86,730
Regulated assets | Utility generation, transmission and distribution systems | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Regulated assets | Utility generation, transmission and distribution systems | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	80 years
Regulated assets | Interstate natural gas pipeline assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 17,423	16,667
Regulated assets | Interstate natural gas pipeline assets | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	3 years
Regulated assets | Interstate natural gas pipeline assets | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	80 years
Nonregulated assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 13,695	12,671
Accumulated depreciation and amortization	(3,041)	(2,586)
Net operating assets	10,654	10,085
Nonregulated assets | Independent power plants
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,665	7,012
Nonregulated assets | Independent power plants | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	2 years
Nonregulated assets | Independent power plants | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	50 years
Nonregulated assets | LNG facility
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,364	3,339
Depreciable life	40 years
Nonregulated assets | Other assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,666	2,320
Nonregulated assets | Other assets | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	2 years
Nonregulated assets | Other assets | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	30 years
Common Facilities
Property, Plant and Equipment [Line Items]
Net operating assets	$ 85,620	82,820
Construction work-in-progress	4,196	3,308
Property, plant and equipment, net	$ 89,816	$ 86,128