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DEBT AND CREDIT FACILITIES - NARRATIVE (Details) | 1 Months Ended | 9 Months Ended |
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Aug. 31, 2023 USD ($) | Jun. 30, 2023 USD ($) | May 31, 2023 USD ($) | Mar. 31, 2023 USD ($) | Aug. 31, 2022 USD ($) | Jul. 31, 2022 USD ($) | Sep. 30, 2023 USD ($) lineOfCredit bank | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 9,900,000,000 |  |
Primary committed lines of credit | lineOfCredit |  |  |  |  |  |  | 7 |  |
Maximum ratio of indebtedness to total capitalization (as a percent) |  |  |  |  |  |  | 65.00% |  |
Uncommitted letters of credit outstanding |  |  |  |  |  |  | $ 508,000,000 |  |
Issuances of debt (maturities greater than 90 days) |  |  |  |  |  |  | 6,911,000,000 | $ 6,711,000,000 |
Foreign Unsecured Line of Credit |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | 200,000,000 |  |
Line of credit, amount outstanding |  |  |  |  |  |  | $ 37,000,000 |  |
Five Point Four Zero Percent Senior Unsecured Notes | Unsecured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount |  | $ 550,000,000 |  |  |  |  |  |  |
Stated rate of debt (as a percent) |  | 5.40% |  |  |  |  |  |  |
Proceeds from debt issuance |  | $ 545,000,000 |  |  |  |  |  |  |
Unamortized debt issuance costs and discounts |  | 5,000,000 |  |  |  |  |  |  |
Five Point Five Zero Percent Senior Unsecured Notes | Unsecured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount |  | $ 700,000,000 |  |  |  |  |  |  |
Stated rate of debt (as a percent) |  | 5.50% |  |  |  |  |  |  |
Proceeds from debt issuance |  | $ 692,000,000 |  |  |  |  |  |  |
Unamortized debt issuance costs and discounts |  | $ 8,000,000 |  |  |  |  |  |  |
SI Partners |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum adjustment EBITDA allowed |  |  |  |  |  |  | 5.25 |  |
SI Partners | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Port Arthur LNG |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  | 70.00% |  |  |  |  |
Port Arthur LNG | Port Arthur LNG Committed Line Of Credit Due 2030 |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 200,000,000 |  |
Port Arthur LNG | Port Arthur LNG Committed Line Of Credit Due 2030 | Line of Credit |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 200,000,000 |  |  |  |  |
Term of debt instrument (in years) |  |  |  | 7 years |  |  |  |  |
SI Partners and IEnova | IEnova Uncommitted Line Of Credit Due 2024 | Interbank Equilibrium Interest Rate |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Variable percentage rate (in percent) |  |  |  |  |  |  | 1.05% |  |
SI Partners and IEnova | IEnova Uncommitted Line Of Credit Due 2024 | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Variable percentage rate (in percent) |  | 1.15% |  |  |  |  |  |  |
SI Partners and IEnova | IEnova Uncommitted Line Of Credit Due 2024 | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Variable percentage rate (in percent) |  | 1.05% |  |  |  |  |  |  |
Southern California Gas Company |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 1,200,000,000 |  |
Maximum ratio of indebtedness to total capitalization (as a percent) |  |  |  |  |  |  | 65.00% |  |
Issuances of debt (maturities greater than 90 days) |  |  |  |  |  |  | $ 997,000,000 | 1,497,000,000 |
Debt issuance costs |  |  |  |  |  |  | 9,000,000 | 6,000,000 |
Southern California Gas Company | Term Loan Due 2023 |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Issuances of debt (maturities greater than 90 days) |  |  |  |  | $ 800,000,000 |  |  |  |
Southern California Gas Company | Term Loan Due 2023 | Secured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Term of debt instrument (in years) |  |  |  |  |  | 364 days |  |  |
Variable percentage rate (in percent) |  |  |  |  |  | 0.70% |  |  |
Debt amount |  |  |  |  |  | $ 800,000,000 |  |  |
Southern California Gas Company | Term Loan Due 2023 | Secured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount |  |  |  |  |  | $ 800,000,000 |  |  |
Southern California Gas Company | Five Point Two Zero Percent Senior Secured Notes | Secured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount |  |  | $ 500,000,000 |  |  |  |  |  |
Stated rate of debt (as a percent) |  |  | 5.20% |  |  |  |  |  |
Proceeds from debt issuance |  |  | $ 495,000,000 |  |  |  |  |  |
Unamortized debt issuance costs and discounts |  |  | 5,000,000 |  |  |  |  |  |
Southern California Gas Company | Five Point Seven Five Percent Senior Secured Notes | Secured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount |  |  | $ 500,000,000 |  |  |  |  |  |
Stated rate of debt (as a percent) |  |  | 5.75% |  |  |  |  |  |
Proceeds from debt issuance |  |  | $ 493,000,000 |  |  |  |  |  |
Unamortized debt issuance costs and discounts |  |  | $ 7,000,000 |  |  |  |  |  |
Southern California Gas Company | Senior Unsecured Floating Rate Notes | Unsecured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount |  | $ 300,000,000 |  |  |  |  |  |  |
San Diego Gas and Electric Company |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 1,500,000,000 |  |
Maximum ratio of indebtedness to total capitalization (as a percent) |  |  |  |  |  |  | 65.00% |  |
Issuances of debt (maturities greater than 90 days) |  |  |  |  |  |  | $ 1,389,000,000 | 1,395,000,000 |
Debt issuance costs |  |  |  |  |  |  | $ 12,000,000 | $ 9,000,000 |
San Diego Gas and Electric Company | Five Point Three Five Zero Percent Senior Secured Notes | Secured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount |  |  |  | $ 800,000,000 |  |  |  |  |
Stated rate of debt (as a percent) |  |  |  | 5.35% |  |  |  |  |
Proceeds from debt issuance |  |  |  | $ 783,000,000 |  |  |  |  |
Unamortized debt issuance costs and discounts |  |  |  | $ 17,000,000 |  |  |  |  |
San Diego Gas and Electric Company | Four Point Nine Percent Green First Mortgage Bonds | Secured Debt |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt amount | $ 600,000,000 |  |  |  |  |  |  |  |
Stated rate of debt (as a percent) | 4.95% |  |  |  |  |  |  |  |
Proceeds from debt issuance | $ 593,000,000 |  |  |  |  |  |  |  |
Unamortized debt issuance costs and discounts | $ 7,000,000 |  |  |  |  |  |  |  |
Sempra LNG | Loan Agreement To Finance Natural Gas Liquefaction Export Facility |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Term of debt instrument (in years) |  |  |  |  |  |  | 5 years |  |
Number of banks in syndicate | bank |  |  |  |  |  |  | 7 |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  | 8.35% |  | 7.54%
Sempra Infrastructure | Loan Agreement To Finance Natural Gas Liquefaction Export Facility |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 1,300,000,000 |  |
Debt outstanding |  |  |  |  |  |  | $ 782,000,000 |  | $ 575,000,000
IEnova | ECA LNG JV |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage in consolidated entity (in percentage) |  |  |  |  |  |  | 83.40% |  |
Subsidiary of TOTAL SE | ECA LNG JV |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage in consolidated entity (in percentage) |  |  |  |  |  |  | 16.60% |  |
Port Arthur LNG | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Term of debt instrument (in years) |  |  |  | 20 years |  |  |  |  |
Debt outstanding |  |  |  |  |  |  | $ 243,000,000 |  |
Weighted average interest rate (as a percent) |  |  |  |  |  |  | 5.71% |  |
Upfront equity funding amount |  |  |  | $ 4,700,000,000 |  |  |  |  |
Debt issuance costs |  |  |  | $ 200,000,000 |  |  |  |  |
Commitment fee (in percent) |  |  |  | 30.00% |  |  |  |  |
Port Arthur LNG | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Minimum amount of the projected amount of term loans (in percent) |  |  |  | 60.00% |  |  |  |  |
Port Arthur LNG | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Secured Overnight Financing Rate (SOFR) | Interest Rate, Before Completion of Phase 1 |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Variable percentage rate (in percent) |  |  |  | 2.00% |  |  |  |  |
Port Arthur LNG | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Secured Overnight Financing Rate (SOFR) | Interest Rate, After Completion of Phase 1 |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Variable percentage rate (in percent) |  |  |  | 2.25% |  |  |  |  |
Port Arthur LNG | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Line of Credit | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Minimum amount of the projected amount of term loans (in percent) |  |  |  | 60.00% |  |  |  |  |
Port Arthur LNG | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Domestic Line of Credit |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 6,800,000,000 |  |
SI Partners and ConocoPhillips | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Equity funding provided |  |  |  | $ 2,800,000,000 |  |  |  |  |
ConocoPhillips | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project | Port Arthur LNG |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  | 30.00% |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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(19)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
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