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Related-Party Transactions (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Feb. 28, 2025	Jul. 31, 2022	Mar. 31, 2025	Jun. 30, 2023	Sep. 30, 2025	Dec. 31, 2024
Related party transactions
Long-term insurance receivable due from affiliate					$ 307	$ 418
SCE
Related party transactions
Wildfire insurance expense	$ 50		$ 50	$ 450
SCE | Wildfire Liability Insurance | Subsidiary of Common Parent
Related party transactions
Wildfire-related insurance premiums		$ 273
Long-term insurance receivable due from affiliate					$ 226	$ 303

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- Definition

Wildfire Insurance Expense

+ References

No definition available.

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- Definition

Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of transactions with related party during the financial reporting period.

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