Property, Plant and Equipment, Net - PAC (Details) - PAC - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Property, Plant, and Equipment [Line Items]
Plant, net	$ 26,761		$ 27,783
Construction work-in-progress	3,576		3,330
Property, plant and equipment, net	30,337		31,113
Government grant, asset decrease	67		50
Government grant, operating expense decrease	3	$ 16
Regulated
Property, Plant, and Equipment [Line Items]
Generation	14,408		15,114
Transmission	11,508		11,732
Distribution	10,941		11,127
Intangible plant and other	2,633		2,667
Utility plant in-service	39,490		40,640
Accumulated depreciation and amortization	(12,747)		(12,875)
Plant, net	$ 26,743		27,765
Regulated \| Minimum
Property, Plant, and Equipment [Line Items]
Useful life, generation	15 years
Useful life, transmission	60 years
Useful life, distribution	20 years
Useful life, other	2 years
Regulated \| Maximum
Property, Plant, and Equipment [Line Items]
Useful life, generation	59 years
Useful life, transmission	90 years
Useful life, distribution	75 years
Useful life, other	75 years
Nonregulated
Property, Plant, and Equipment [Line Items]
Plant, net	$ 18		$ 18
Nonregulated \| Minimum
Property, Plant, and Equipment [Line Items]
Useful life, other	34 years
Nonregulated \| Maximum
Property, Plant, and Equipment [Line Items]
Useful life, other	75 years

Public Utilities, Property, Plant And Equipment, Net, Excluding Construction Work In Progress

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Public Utilities, Property, Plant And Equipment, Plant In Service, Excluding Construction Work In Progress

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- Definition

Amount of decrease in asset from government assistance.

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Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility.

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Period end amount of construction work in progress in public utility.

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Period end amount of property, plant and equipment (PPE) related to utility distribution.

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Useful life of utility distribution asset owned by public utility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period end amount of property, plant and equipment (PPE) related to generation or processing owned by public utility.

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Useful life of utility generation asset owned by public utility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period end book value of other property, plant and equipment (PPE) owned (but not classified elsewhere) by the public utility.

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Period end amount of property, plant and equipment (PPE) related to utility transmission owned by public utility.

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Useful life of utility transmission equipment owned by public utility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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