Sale of Stock, Consideration Expected To Be Received on Transaction

No definition available.

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Namespace Prefix:	sre_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Sale of Stock, Number of Shares That Remain To Be Issued in Transaction

+ References

No definition available.

+ Details

Name:	sre_SaleOfStockNumberOfSharesThatRemainToBeIssuedInTransaction
Namespace Prefix:	sre_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow for cost incurred directly with the issuance of an equity security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

+ Details

Name:	us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- 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.

+ Details

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Balance Type:	na
Period Type:	duration

- Details

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- Details

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SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - SCHEDULE OF FORWARD SALE AGREEMENTS (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 26, 2025	Nov. 18, 2024	Mar. 31, 2026
Q4 2024 Forward Sale Agreement
Subsidiary or Equity Method Investee [Line Items]
Number of shares sold (in shares)		2,909,274
Number of shares that remain to be settled (in shares)			2,909,274
Sale of stock, price per share (usd per share)		$ 92.1546
Expected net proceeds		$ 268.0
Sales commissions		$ 2.4
Q1 2025 Forward Sale Agreement
Subsidiary or Equity Method Investee [Line Items]
Number of shares sold (in shares)	2,087,317
Number of shares that remain to be settled (in shares)			2,087,317
Sale of stock, price per share (usd per share)	$ 70.6593
Expected net proceeds	$ 147.0
Sales commissions	$ 1.3