DEBT AND CREDIT FACILITIES - UNCOMMITTED LETTERS OF CREDIT (Details) $ in Millions	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Letters of credit outstanding	$ 594
Letter of Credit
Debt Instrument [Line Items]
Long-term debt outstanding	594
Letter of Credit \| San Diego Gas and Electric Company
Debt Instrument [Line Items]
Long-term debt outstanding	15
Letter of Credit \| SoCalGas
Debt Instrument [Line Items]
Long-term debt outstanding	20
Letter of Credit \| Sempra Infrastructure
Debt Instrument [Line Items]
Long-term debt outstanding	391
Letter of Credit \| Parent and Other
Debt Instrument [Line Items]
Long-term debt outstanding	$ 168

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant