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Regulatory Assets and Liabilities - Schedule of Regulatory Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Regulatory Liabilities
Total current	$ 1,109	$ 1,347
Total long-term	10,736	10,159
SCE
Regulatory Liabilities
Total current	1,109	1,347
Total long-term	10,736	10,159
Total regulatory liabilities	11,845	11,506
SCE | Regulatory balancing and memorandum accounts
Regulatory Liabilities
Total current	1,017	1,144
Total long-term	2,175	2,023
SCE | Energy derivatives
Regulatory Liabilities
Total current	54	165
SCE | Costs of removal
Regulatory Liabilities
Total long-term	2,693	2,520
SCE | Deferred income taxes
Regulatory Liabilities
Total long-term	2,143	2,163
SCE | Recoveries in excess of ARO liabilities
Regulatory Liabilities
Total long-term	1,982	1,748
SCE | Pension and other postretirement benefits
Regulatory Liabilities
Total long-term	1,708	1,690
SCE | Other
Regulatory Liabilities
Total current	38	38
Total long-term	$ 35	$ 15

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- Definition

The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 405
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477571/980-405-25-1

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 980
-SubTopic 405
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477571/980-405-25-1

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The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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