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DEBT AND CREDIT FACILITIES - NARRATIVE (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 31, 2024 USD ($) | Mar. 31, 2024 USD ($) | May 30, 2024 USD ($) | Jun. 30, 2024 USD ($) lineOfCredit bank day line_of_credit | Dec. 31, 2023 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 9,900 |
Primary committed lines of credit | lineOfCredit |  |  |  | 7 |
Ratio of indebtedness to net capital (in percent) |  |  |  | 0.65 |
Available unused credit |  |  |  | $ 7,958 |
6.875% Junior Subordinated Notes, Due October 1, 2054 |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt amount | $ 500 | $ 600 |  |  |
Stated rate of debt (as a percent) |  |  |  | 6.875% |
Proceeds from debt issuance | 489 | 593 |  |  |
Unamortized debt issuance costs and discounts | $ 11 | 7 |  |  |
Debt instrument, interest rate, period (in years) |  |  |  | 5 years |
Number of days before interest rate period | day |  |  |  | 2 |
Accrued interest |  |  | $ 7 |  |
6.875% Junior Subordinated Notes, Due October 1, 2054 | Redemption period one |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt instrument, redemption price, percentage of principal amount redeemed (in percent) |  |  |  | 100.00% |
6.875% Junior Subordinated Notes, Due October 1, 2054 | Redemption period two |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt instrument, redemption price, percentage of principal amount redeemed (in percent) |  |  |  | 100.00% |
6.875% Junior Subordinated Notes, Due October 1, 2054 | Redemption period three |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt instrument, redemption price, percentage of principal amount redeemed (in percent) |  |  |  | 102.00% |
6.875% Junior Subordinated Notes, Due October 1, 2054 | Five-Year US Treasury Rate |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable percentage rate (in percent) |  |  |  | 2.789% |
Other Long-Term Debt, 4.125% Junior Subordinated Notes Due 2052 |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Stated rate of debt (as a percent) |  |  |  | 4.125% |
Other Long-Term Debt, 5.75% Junior Subordinated Notes Due 2079 |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Stated rate of debt (as a percent) |  |  |  | 5.75% |
ECA LNG Phase 1 |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 200 |
Line of credit, amount outstanding |  |  |  | 26 |
SDG&E |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 1,500 |
Ratio of indebtedness to net capital (in percent) |  |  |  | 0.65 |
Available unused credit |  |  |  | $ 1,500 |
SDG&E | Secured Debt | Five Point Five Five Percent First Mortgage Bonds Due April 15, 2054 |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt amount |  | $ 600 |  |  |
Stated rate of debt (as a percent) |  | 5.55% |  |  |
Proceeds from debt issuance |  | $ 587 |  |  |
Unamortized debt issuance costs and discounts |  | 13 |  |  |
SoCalGas |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 1,200 |
Ratio of indebtedness to net capital (in percent) |  |  |  | 0.65 |
Available unused credit |  |  |  | $ 1,094 |
SoCalGas | 364-Day Term Loan, Due May 22,2025 | Secured Overnight Financing Rate (SOFR) | Variable Rate Component One |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable percentage rate (in percent) | 0.80% |  |  |  |
SoCalGas | 364-Day Term Loan, Due May 22,2025 | Secured Overnight Financing Rate (SOFR) | Variable Rate Component Two |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable percentage rate (in percent) | 0.10% |  |  |  |
SoCalGas | Secured Debt | Five Point Six Percent First Mortgage Bonds, Due April 1, 2054 |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt amount |  | $ 500 |  |  |
Stated rate of debt (as a percent) |  | 5.60% |  |  |
Proceeds from debt issuance |  | $ 491 |  |  |
Unamortized debt issuance costs and discounts |  | $ 9 |  |  |
SoCalGas | Line of Credit | 364-Day Term Loan, Due May 22,2025 | Secured Debt |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Debt amount | $ 500 |  |  |  |
Term of debt instrument (in years) | 364 days |  |  |  |
Proceeds from lines of credit | $ 300 |  |  |  |
Available unused credit | 200 |  |  |  |
Line of credit facility, accordion feature, increase limit | $ 500 |  |  |  |
SI Partners |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Maximum adjustment EBITDA allowed |  |  |  | 5.25 |
SI Partners and IEnova |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Number of lines of credit | line_of_credit |  |  |  | 3 |
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] |  |  |  |  |
Debt outstanding |  |  |  | $ 289 | $ 258
Weighted average interest rate (as a percent) |  |  |  | 5.33% | 5.81%
Port Arthur LNG | Domestic Line of Credit | Loan Agreement To Finance The Cost Of Development And Construction Of The PA LNG Phase 1 Project |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 6,800 |
Term of debt instrument (in years) |  |  |  | 7 years |
ECA LNG Phase 1 | IEnova Committed Line Of Credit Due 2024 | Interbank Equilibrium Interest Rate |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable percentage rate (in percent) |  |  |  | 1.05% |
ECA LNG Phase 1 | IEnova Committed Line Of Credit Due 2024 | Secured Overnight Financing Rate (SOFR) |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable percentage rate (in percent) |  |  |  | 1.15% |
ECA LNG Phase 1 | Loan Agreement To Finance Natural Gas Liquefaction Export Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 1,300 |
Term of debt instrument (in years) |  |  |  | 5 years |
Number of banks in syndicate | bank |  |  |  | 7 |
Debt outstanding |  |  |  | $ 994 | $ 832
Weighted average interest rate (as a percent) |  |  |  | 8.29% | 8.31%

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