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SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - PROPERTY, PLANT, AND EQUIPMENT (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 80,397 | $ 72,495 |
Depreciation expense | 2,409 | 2,202 | $ 1,995
Accumulated depreciation | $ 18,960 | 17,535 |
Sempra Infrastructure |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Number of segments of pipeline | segment | 2 |  |
SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 33,162 | 30,918 |
Depreciation expense | 1,216 | 1,092 | 977
Accumulated depreciation | 8,051 | 7,369 |
SoCalGas |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 29,084 | 27,025 |
Depreciation expense | 903 | 833 | $ 755
Accumulated depreciation | 8,330 | 7,852 |
Natural gas operations | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 4,531 | $ 4,175 |
Depreciation rates (percentage) | 2.62% | 2.60% | 2.57%
Accumulated depreciation | $ 1,121 | $ 1,048 |
Natural gas operations | SoCalGas |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 27,191 | $ 25,506 |
Depreciation rates (percentage) | 3.68% | 3.64% | 3.57%
Accumulated depreciation | $ 8,315 | $ 7,835 |
Electric distribution | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 12,542 | $ 11,597 |
Depreciation rates (percentage) | 4.21% | 4.05% | 3.94%
Electric transmission | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 8,878 | $ 8,504 |
Depreciation rates (percentage) | 3.06% | 3.04% | 3.03%
Electric generation | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 2,527 | $ 2,515 |
Depreciation rates (percentage) | 5.43% | 5.18% | 5.11%
Other electric | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 2,722 | $ 2,507 |
Depreciation rates (percentage) | 6.95% | 7.05% | 7.03%
Other non-utility | SoCalGas |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 32 | $ 50 |
Depreciation rates (percentage) | 0.98% | 1.03% | 1.54%
Accumulated depreciation | $ 15 | $ 17 |
Other non-utility | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Accumulated depreciation | 2,579 | 2,314 |
Land and land rights | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 498 | 488 |
Land and land rights | Minimum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 16 years |  |
Land and land rights | Maximum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 44 years |  |
Land and land rights | Weighted Average | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 37 years |  |
Pipelines and storage |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 1,313 | 1,304 |
Pipelines and storage | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 4,355 | 3,883 |
Pipelines and storage | Minimum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 41 years |  |
Pipelines and storage | Maximum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 49 years |  |
Pipelines and storage | Weighted Average | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 42 years |  |
Generating plants | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 1,820 | 1,815 |
Generating plants | Minimum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 11 years |  |
Generating plants | Maximum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 28 years |  |
Generating plants | Weighted Average | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 26 years |  |
LNG terminal | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 1,156 | 1,139 |
Estimated useful life (in years) | 42 years |  |
LNG terminal | Weighted Average | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 42 years |  |
Refined products terminals | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 876 | 656 |
Estimated useful life (in years) | 37 years |  |
Refined products terminals | Weighted Average | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 37 years |  |
Other | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 348 | 346 |
Other | Minimum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 1 year |  |
Other | Maximum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 21 years |  |
Other | Weighted Average | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 15 years |  |
Construction work in progress | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 1,962 | 1,620 |
Construction work in progress | SoCalGas |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 1,861 | 1,469 |
Construction work in progress | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 8,781 | 5,930 |
Other | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 317 | 295 |
Other | Minimum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 1 year |  |
Other | Maximum | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 35 years |  |
Other | Weighted Average | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Estimated useful life (in years) | 16 years |  |
Total Sempra Infrastructure and Parent | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 18,151 | 14,552 |
Plant, pipeline and other distribution assets of Ecogas | Other Sempra |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 290 | 310 |
Accumulated depreciation | 75 | 82 |
Electric transmission, distribution and generation | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Accumulated depreciation | 6,930 | $ 6,321 |
Guaymas-El Oro segment of the Sonora Pipeline | Sempra Infrastructure |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, net | 401 |  |
Southwest Powerlink (SWPL) transmission line | Electric transmission | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | 563 |  |
Accumulated depreciation | 338 |  |
Southwest Powerlink (SWPL) transmission line | Construction work in progress | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Property, plant and equipment, gross | $ 1 |  |
Southwest Powerlink | Southwest Powerlink (SWPL) transmission line | Electric transmission | SDG&E |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Ownership interest (as a percent) | 86.00% |  |

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