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Supplementary Financial Information - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 18,028	$ 17,344
Less accumulated depreciation	(6,657)	(5,753)
Net of accumulated depreciation	11,371	11,591
Finance lease right-of-use assets (net of accumulated depreciation)	160	173
Nuclear fuel (net of accumulated amortization of $120 million and $152 million)	379	268
Construction work in progress	522	522
Property, plant and equipment — net	12,432	12,554
Power generation and structures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,297	16,597
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	572	584
Office and other equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	159	163
Nuclear Fuel
Property, Plant and Equipment [Line Items]
Less accumulated depreciation	$ (120)	$ (152)

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The carrying amount as of the balance sheet of nuclear fuel held as property plant and equipment. This amount is net of amortization based on the energy produced over the life of the fuel.

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