Fair Value Measurements - Schedule of Fair Value of Debt Recorded at Carrying Value (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Fair Value of Long-Term Debt Recorded at Carrying Value
Carrying value	$ 37,670	$ 35,583
Fair value	34,369	33,160
SCE
Fair Value of Long-Term Debt Recorded at Carrying Value
Carrying value	32,458	30,515
Fair value	$ 29,178	$ 27,994

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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+ Details