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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT - FOOTNOTES (Details) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) lender | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Debt Instruments [Abstract] |  |  |  |
Total facility |  | $ 9,900,000,000 |  |
Line of credit, increase limit |  | 500,000,000 |  |
Letters of credit outstanding |  | 513,000,000 |  |
Gross long-term debt |  | 12,207,000,000 | $ 10,654,000,000 |
Long-term debt |  | 27,759,000,000 | 24,548,000,000 |
Long-term debt, maturity, year two |  | 2,001,000,000 |  |
Long-term debt, maturity, year three |  | 1,854,000,000 |  |
Long-term debt, maturity, year four |  | 1,499,000,000 |  |
Long-term debt, maturity, year five |  | 1,954,000,000 |  |
Thereafter |  | 19,497,000,000 |  |
Operating leases |  |  |  |
Total operating lease commitments |  | 1,000,000,000 |  |
2024 |  | 97,000,000 |  |
2025 |  | 87,000,000 |  |
2026 |  | 85,000,000 |  |
2027 |  | 75,000,000 |  |
2028 |  | 69,000,000 |  |
Thereafter |  | 587,000,000 |  |
5.40% Notes August 1, 2026 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate | 5.40% |  |  |
Debt amount | $ 550,000,000 |  |  |
Proceeds from issuance of debt | 545,000,000 |  |  |
Underwriting discounts and debt issuance costs | $ 5,000,000 |  |  |
5.50% Notes August 1, 2033 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate | 5.50% |  |  |
Debt amount | $ 700,000,000 |  |  |
Proceeds from issuance of debt | 692,000,000 |  |  |
Underwriting discounts and debt issuance costs | $ 8,000,000 |  |  |
Parent Company |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Letters of credit outstanding |  | 0 |  |
Gross long-term debt |  | 8,558,000,000 | 7,308,000,000 |
Unamortized discount on long-term debt |  | (29,000,000) | (28,000,000) |
Unamortized debt issuance costs |  | (68,000,000) | (65,000,000) |
Long-term debt |  | 8,461,000,000 | 7,215,000,000 |
Operating leases |  |  |  |
Total operating lease commitments |  | 228,000,000 |  |
2024 |  | 12,000,000 |  |
2025 |  | 12,000,000 |  |
2026 |  | 12,000,000 |  |
2027 |  | 13,000,000 |  |
2028 |  | 13,000,000 |  |
Thereafter |  | $ 166,000,000 |  |
Parent Company | 3.3% Notes April 1, 2025 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 3.30% |  |
Gross long-term debt |  | $ 750,000,000 | 750,000,000 |
Parent Company | 5.40% Notes August 1, 2026 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 5.40% |  |
Gross long-term debt |  | $ 550,000,000 | 0 |
Parent Company | 3.25% Notes June 15, 2027 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 3.25% |  |
Gross long-term debt |  | $ 750,000,000 | 750,000,000 |
Parent Company | 3.4% Notes February 1, 2028 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 3.40% |  |
Gross long-term debt |  | $ 1,000,000,000 | 1,000,000,000 |
Parent Company | 3.7% Notes April 1, 2029 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 3.70% |  |
Gross long-term debt |  | $ 500,000,000 | 500,000,000 |
Parent Company | 5.50% Notes August 1, 2033 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 5.50% |  |
Gross long-term debt |  | $ 700,000,000 | 0 |
Parent Company | 3.8% Notes February 1, 2038 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 3.80% |  |
Gross long-term debt |  | $ 1,000,000,000 | 1,000,000,000 |
Parent Company | 6% Notes October 15, 2039 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 6.00% |  |
Gross long-term debt |  | $ 750,000,000 | 750,000,000 |
Parent Company | 4% Notes February 1, 2048 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 4.00% |  |
Gross long-term debt |  | $ 800,000,000 | 800,000,000 |
Parent Company | 4.125% Junior Subordinated Notes April 1, 2052 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 4.125% |  |
Gross long-term debt |  | $ 1,000,000,000 | 1,000,000,000 |
Parent Company | 5.75% Junior Subordinated Notes July 1, 2079 |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Stated percentage rate |  | 5.75% |  |
Gross long-term debt |  | $ 758,000,000 | 758,000,000 |
Sempra shareholders' equity |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Long-term debt, maturity, year two |  | 750,000,000 |  |
Long-term debt, maturity, year three |  | 550,000,000 |  |
Long-term debt, maturity, year four |  | 750,000,000 |  |
Long-term debt, maturity, year five |  | 1,000,000,000 |  |
Thereafter |  | 5,500,000,000 |  |
Sempra |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Total facility |  | 4,000,000,000 |  |
Sempra | Parent Company |  |  |  |
Basis of Presentation |  |  |  |
Cash dividends received |  | 1,900,000,000 | $ 832,000,000 | $ 375,000,000
Debt Instruments [Abstract] |  |  |  |
Total facility |  | 4,000,000,000 |  |
Amount available |  | $ 3,634,000,000 |  |
Number of lenders | lender |  | 23 |  |
Share of facility held by lenders (as a percent) |  | 6.00% |  |
Ratio of indebtedness to total capitalization (as a percent) |  | 65.00% |  |
Sempra Energy |  |  |  |
Debt Instruments [Abstract] |  |  |  |
Committed lines of credit, capacity for issuance of letters of credit |  | $ 200,000,000 |  |
Line of credit, increase limit |  | $ 500,000,000 |  |

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