COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details) - Sempra LNG [Member] - Liquefied Natural Gas Contracts [Member] $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Loss Contingencies [Line Items]
Decrease in 2019	$ (192)
Decrease in 2020	(3)
Increase in 2021	7
Increase in 2022	10
Increase in 2023	9
Increase thereafter	$ 102

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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