Investments (Trust Value) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value
Fair Value	$ 3,948	$ 4,870
SCE
Fair Value
Fair Value	3,948	4,870
SCE \| Total debt securities and other
Fair Value
Amortized Cost	2,158	2,555
Fair Value	2,338	2,898
SCE \| Government and agency securities
Fair Value
Amortized Cost	1,025	1,095
Fair Value	1,091	1,212
SCE \| Corporate bonds
Fair Value
Amortized Cost	351	386
Fair Value	377	446
SCE \| Municipal bonds
Fair Value
Amortized Cost	672	875
Fair Value	754	1,033
SCE \| Short-term investments and receivables/payables
Fair Value
Amortized Cost	110	199
Fair Value	116	207
SCE \| Repurchase agreements
Fair Value
Fair Value	$ 41	$ 37
Repurchase agreement secured by US Treasury Securities (as a percent)	97.00%	100.00%
SCE \| Equity securities
Fair Value
Fair Value	$ 1,610	$ 1,972
SCE \| Fair Value, Measurements, Recurring
Fair Value
Fair Value	$ 4,033	$ 4,889

The amount of decommissioning trust assets at amortized cost as of the balance sheet date.

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- Definition

Repurchase agreement collateralized/secured by US Treasury Securities (as a percent)

+ References

No definition available.

+ Details

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- Definition

The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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- 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.

+ References

No definition available.

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