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Balance Sheet Components Electric Utility Plant, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Electric utility plant	$ 15,202		$ 15,202		$ 14,863
Construction work-in-progress	718		718		567
Total cost	15,920		15,920		15,430
Less: accumulated depreciation and amortization	(5,275)		(5,275)		(5,085)
Electric utility plant, net	10,645		10,645		$ 10,345
Amortization of Intangible Assets	$ 19	$ 18	$ 38	$ 36

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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X

- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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X

- Definition

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 total net PPE.

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Period end amount of total gross PPE.

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