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SEMPRA - EQUITY AND EARNINGS PER COMMON SHARE - NARRATIVE (Details) - USD ($) |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
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Feb. 25, 2025 | Dec. 31, 2024 | Apr. 06, 2022 | Jan. 11, 2022 | Dec. 31, 2024 | Nov. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 30, 2024 | Dec. 21, 2021 | Jul. 06, 2020
Common stock, shares authorized (in shares) |  | 1,125,000,000 |  |  | 1,125,000,000 |  |  | 1,125,000,000 | 1,125,000,000 |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) |  |  |  |  |  | 19,242,010 |  |  |  |  |  |  |
Issuances of common stock, net |  |  |  |  |  | $ 144,000,000 |  | $ 1,219,000,000 | $ 145,000,000 | $ 4,000,000 |  |  |
Payments of stock issuance costs |  | $ 2,000,000 |  |  |  | $ 3,000,000 |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 1,234,000,000 | $ 1,419,000,000 |  |  |
SI Partners | Sempra Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  | $ 709,000,000 |  |  |  |  |  |
Sale of noncontrolling interest, change in equity |  |  |  |  |  |  | 710,000,000 |  |  |  |  |  |
Sale of noncontrolling interest, transaction costs |  |  |  |  |  |  | 12,000,000 |  |  |  |  |  |
Sale of noncontrolling interest, deferred income tax liability |  |  |  |  |  |  | 300,000,000 |  |  |  |  |  |
Sale of noncontrolling interest, transaction costs reimbursed |  |  |  |  |  |  | $ 10,000,000 |  |  |  |  |  |
Abu Dhabi Investment Authority | SI Partners |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of noncontrolling interest, purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 1,700,000,000 |
Ownership percentage held by noncontrolling owners |  |  |  |  |  |  |  |  |  |  |  | 10.00% |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum amount of shares that may yet be purchased | $ 1,250,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Shares may yet be purchased (in shares) | 19,632,529 |  |  |  |  |  |  |  |  |  |  |  |
Public Stock Offering |  |  |  |  |  |  |  |  |  |  |  |  |
Forward price per share (in usd per share) |  | $ 69.2195 |  |  | $ 69.2195 |  |  | $ 69.2195 |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) |  |  |  |  | 17,142,858 | 17,142,858 |  |  |  |  |  |  |
Par value (in usd per share) |  |  |  |  |  | $ 0 |  |  |  |  |  |  |
Sale of stock, price per share (in usd per share) |  |  |  |  |  | 70.00 |  |  |  |  |  |  |
Sale of stock, price per share, after underwriting discounts (in usd per share) |  |  |  |  |  | $ 68.845 |  |  |  |  |  |  |
Issuances of common stock, net |  |  |  |  | $ 1,200,000,000 |  |  |  |  |  |  |  |
Payments of stock issuance costs |  |  |  |  | 20,000,000 |  |  |  |  |  |  |  |
Over-Allotment Option |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction (in shares) |  |  |  |  |  | 2,099,152 |  |  |  |  |  |  |
At The Market Program Offering |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate sales price |  |  |  |  |  |  |  |  |  |  | $ 3,000,000,000 |  |
Underwriting commission, percent |  |  |  |  |  |  |  |  |  |  | 1.00% |  |
Amount of stock available to be issued |  | $ 2,700,000,000 |  |  | $ 2,700,000,000 |  |  | $ 2,700,000,000 |  |  |  |  |
Number of shares available for issuance |  | 2,909,274 |  |  | 2,909,274 |  |  | 2,909,274 |  |  | 2,909,274 |  |
Forward price per share (in usd per share) |  | $ 92.1546 |  |  | $ 92.1546 |  |  | $ 92.1546 |  |  |  |  |
Issuances of common stock, net |  | $ 268,000,000 |  |  |  |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000,000.0
Number of shares authorized to be repurchased (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 25,000,000
Common shares repurchased (in shares) |  |  | 2,943,914 | 2,945,512 |  |  |  |  |  |  |  |  |
Common shares repurchased, average price (in dollars per share) |  |  | $ 84.92 | $ 67.90 |  |  |  |  |  |  |  |  |
ASR program, amount prepaid |  |  | $ 250,000,000 | $ 200,000,000 |  |  |  |  |  |  |  |  |
Shares withheld for tax purposes (in shares) |  |  |  |  |  |  |  | 689,303 | 412,594 | 406,512 |  |  |
Shares withheld for tax purposes |  |  |  |  |  |  |  | $ 43,000,000 | $ 32,000,000 | $ 28,000,000 |  |  |

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