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SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - SERIES C PREFERRED STOCK (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
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Oct. 15, 2025 | Sep. 10, 2025 | Oct. 14, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Preferred Stock [Line Items] |  |  |  |  |  |  |  |  |
Mandatorily redeemable preferred stock |  |  |  | $ 900 |  | $ 900 |  | $ 0 | [1]
Preferred deemed dividends |  |  |  | 11 | $ 0 | 11 | $ 0 |  |
Redemption of preferred stock |  |  |  | $ 900 |  | $ 900 |  |  |
Series C Preferred Stock |  |  |  |  |  |  |  |  |
Preferred Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 900,000 |  |  |  |  |  | 900,000 |
Preferred stock, shares issued (in shares) |  | 900,000 |  |  |  |  |  |  |
Preferred stock redemption price (in dollars per share) |  | $ 1,000 |  |  |  |  |  |  |
Mandatorily redeemable preferred stock |  | $ 900 |  |  |  |  |  |  |
Preferred deemed dividends |  | $ 11 |  |  |  |  |  |  |
Series C Preferred Stock | Subsequent Event |  |  |  |  |  |  |  |  |
Preferred Stock [Line Items] |  |  |  |  |  |  |  |  |
Interest expense, accrued but undeclared dividends |  |  | $ 4 |  |  |  |  |  |
Redemption of preferred stock | $ 900 |  |  |  |  |  |  |  |
Shares redeemed during period (in shares) | 900,000 |  |  |  |  |  |  |  |
[1] | Derived from audited financial statements.

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- Definition Preferred Stock [Line Items] + References No definition available. + Details
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- Definition Amount of interest expense recognized on mandatorily redeemable financial instrument issued in form of share classified as liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481679/480-10-45-2 + Details
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- Definition The excess of (1) fair value of the consideration transferred to the holders of the preferred stock over (2) the carrying amount of the preferred stock in the registrant's balance sheet, during the accounting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480408/260-10-S99-2 + Details
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- Definition The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-5 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-11 + Details
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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + 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(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.6-05(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(4)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(16)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 + Details
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