DEBT AND CREDIT FACILITIES - Uncommitted Letters of Credit (Details) $ in Millions	Sep. 30, 2025 USD ($)
Debt Instrument [Line Items]
Letters of credit outstanding	$ 1,984
SDG&E
Debt Instrument [Line Items]
Letters of credit outstanding	21
SoCalGas
Debt Instrument [Line Items]
Letters of credit outstanding	15
Other Sempra
Debt Instrument [Line Items]
Letters of credit outstanding	$ 1,948