COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details) - Sempra LNG [Member] - Liquefied Natural Gas Contracts [Member] $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($)
Loss Contingencies [Line Items]
Change in 2021	$ (67)
Change in 2022	37
Change in 2023	35
Change in 2024	29
Change in 2025	23
Change thereafter	$ 86

Increase (Decrease) in Unrecorded Unconditional Purchase Obligation, After Five Years

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- Definition

Increase (Decrease) in Unrecorded Unconditional Purchase Obligation, Remainder of Fiscal Year

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- Definition

Increase (Decrease) in Unrecorded Unconditional Purchase Obligation, Year Five

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- Definition

Increase (Decrease) in Unrecorded Unconditional Purchase Obligation, Year Four

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- Definition

Increase (Decrease) in Unrecorded Unconditional Purchase Obligation, Year Three

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- Definition

Increase (Decrease) in Unrecorded Unconditional Purchase Obligation, Year Two

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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