DEBT AND CREDIT FACILITIES - Uncommitted Letters of Credit (Details) $ in Millions	Mar. 31, 2026 USD ($)
Debt Instrument [Line Items]
Letters of credit outstanding	$ 202
Disposal Group Held-for-sale | SI Partners
Debt Instrument [Line Items]
Standby letters of credit held for sale	1,796
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	$ 166