DEBT AND CREDIT FACILITIES - OTHER LONG-TERM DEBT (Details) $ in Millions	1 Months Ended				12 Months Ended
	Nov. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	May 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) business_day
Debt Instrument [Line Items]
Various long-term obligations					$ 16,200
Not subject to make-whole provisions					6,691
Subject to make-whole provisions					26,203
Other Sempra
Debt Instrument [Line Items]
Not subject to make-whole provisions					6,687
Subject to make-whole provisions					9,903
Variable percentage rate	2.354%	2.632%
SoCalGas
Debt Instrument [Line Items]
Various long-term obligations					709
Not subject to make-whole provisions					4
Subject to make-whole provisions					$ 7,350
Five Point Six Percent First Mortgage Bonds, Due April 1, 2054 | Other Sempra
Debt Instrument [Line Items]
Number of days before interest rate period | business_day					2
Debt instrument, interest rate, period (in years)					5 years
Five Point Six Percent First Mortgage Bonds, Due April 1, 2054 | SoCalGas | Secured Debt
Debt Instrument [Line Items]
Proceeds from issuance of debt				$ 491
Underwriting discounts and debt issuance costs				9
6.875% Junior Subordinated Notes, Due October 1, 2054 | Other Sempra
Debt Instrument [Line Items]
Debt amount			$ 500
Proceeds from issuance of debt			489
Underwriting discounts and debt issuance costs			11
Accrued interest			$ 7
6.40% Junior Subordinated Notes, Due October 1, 2054
Debt Instrument [Line Items]
Stated percentage rate		6.40%
6.40% Junior Subordinated Notes, Due October 1, 2054 | Other Sempra
Debt Instrument [Line Items]
Debt amount		$ 1,250
Proceeds from issuance of debt		1,235
Underwriting discounts and debt issuance costs		$ 15
Other Long-Term Debt, 6.625% Junior Subordinated Notes April 1, 2055 | Other Sempra
Debt Instrument [Line Items]
Debt amount	$ 400
Stated percentage rate	6.625%				6.625%
Proceeds from issuance of debt	$ 395
Underwriting discounts and debt issuance costs	5
Other Long-Term Debt, 6.55% Junior Subordinated Notes April 1, 2055 | Other Sempra
Debt Instrument [Line Items]
Debt amount	$ 600
Stated percentage rate	6.55%				6.55%
Proceeds from issuance of debt	$ 593
Underwriting discounts and debt issuance costs	$ 7
Variable percentage rate	2.138%
Other Long-Term Debt, 6.875% Junior Subordinated Notes October 1, 2054 | Other Sempra
Debt Instrument [Line Items]
Debt amount				600
Stated percentage rate					6.875%
Proceeds from issuance of debt				593
Underwriting discounts and debt issuance costs				$ 7
Other Long-Term Debt, 6.875% Junior Subordinated Notes October 1, 2054 | Other Sempra | Period one
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed (in percent)			100.00%		100.00%
Other Long-Term Debt, 6.875% Junior Subordinated Notes October 1, 2054 | Other Sempra | Period two
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed (in percent)			102.00%	102.00%
6.875% Junior Subordinated Notes, Issued In March and May 2024 | Other Sempra
Debt Instrument [Line Items]
Variable percentage rate			2.789%
Loan at variable rates (includes $1,090 and $200 at December 31, 2024 and 2023, respectively, (5.329% after floating-to-fixed rate swaps effective 2023) and $58 at December 31, 2023 (weighted-average rate of 7.37% at December 31, 2023)) March 20, 2030, collateralized by plant assets(1) | Sempra Infrastructure
Debt Instrument [Line Items]
Fixed percentage interest rate					5.329%