DEBT AND CREDIT FACILITIES - SCHEDULE OF LONG-TERM DEBT INSTRUMENTS (Details) - USD ($) $ in Millions	Dec. 31, 2024	Nov. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Gross long-term debt	$ 16,590			$ 12,207
Long-term debt and finance leases	1,250			1,276
Finance lease obligations	1,315			1,340
Current portion of long-term debt and finance leases	(2,274)			(975)
Long-term debt and finance leases	31,558			27,759
SDG&E
Debt Instrument [Line Items]
Gross long-term debt	8,950			8,350
Long-term debt and finance leases	1,163			1,192
Long term debt and lease obligations, including current maturities	10,155			9,983
Finance lease obligations	1,205			1,233
Current portion of long-term debt and finance leases	(42)			(441)
Unamortized discount on long-term debt	(33)			(29)
Unamortized debt issuance costs	(62)			(60)
Total debt and lease obligations	10,018			9,453
Long-term debt and finance leases	$ 10,018			9,453
SDG&E | First Mortgage Bonds, 2.5% May 15, 2026
Debt Instrument [Line Items]
Stated percentage rate	2.50%
Gross long-term debt	$ 500			500
SDG&E | First Mortgage Bonds, 6% June 1, 2026
Debt Instrument [Line Items]
Stated percentage rate	6.00%
Gross long-term debt	$ 250			250
SDG&E | First Mortgage Bonds, 4.95% August 15, 2028
Debt Instrument [Line Items]
Stated percentage rate	4.95%
Gross long-term debt	$ 600			600
SDG&E | First Mortgage Bonds, 1.7% October 1, 2030
Debt Instrument [Line Items]
Stated percentage rate	1.70%
Gross long-term debt	$ 800			800
SDG&E | First Mortgage Bonds, 3% March 15, 2032
Debt Instrument [Line Items]
Stated percentage rate	3.00%
Gross long-term debt	$ 500			500
SDG&E | First Mortgage Bonds, 5.35% May 15, 2035
Debt Instrument [Line Items]
Stated percentage rate	5.35%
Gross long-term debt	$ 250			250
SDG&E | First Mortgage Bonds, 6.125% September 15, 2037
Debt Instrument [Line Items]
Stated percentage rate	6.125%
Gross long-term debt	$ 250			250
SDG&E | First Mortgage Bonds, 6% June 1, 2039
Debt Instrument [Line Items]
Stated percentage rate	6.00%
Gross long-term debt	$ 300			300
SDG&E | First Mortgage Bonds, 5.35% May 15, 2040
Debt Instrument [Line Items]
Stated percentage rate	5.35%
Gross long-term debt	$ 250			250
SDG&E | First Mortgage Bonds, 4.5% August 15, 2040
Debt Instrument [Line Items]
Stated percentage rate	4.50%
Gross long-term debt	$ 500			500
SDG&E | First Mortgage Bonds, 3.95% November 15, 2041
Debt Instrument [Line Items]
Stated percentage rate	3.95%
Gross long-term debt	$ 250			250
SDG&E | First Mortgage Bonds, 4.3% April 1, 2042
Debt Instrument [Line Items]
Stated percentage rate	4.30%
Gross long-term debt	$ 250			250
SDG&E | First Mortgage Bonds, 3.75% June 1, 2047
Debt Instrument [Line Items]
Stated percentage rate	3.75%
Gross long-term debt	$ 400			400
SDG&E | First Mortgage Bonds, 4.15% May 15, 2048
Debt Instrument [Line Items]
Stated percentage rate	4.15%
Gross long-term debt	$ 400			400
SDG&E | First Mortgage Bonds, 4.1% June 15, 2049
Debt Instrument [Line Items]
Stated percentage rate	4.10%
Gross long-term debt	$ 400			400
SDG&E | First Mortgage Bonds, 3.32% April 15, 2050
Debt Instrument [Line Items]
Stated percentage rate	3.32%
Gross long-term debt	$ 400			400
SDG&E | First Mortgage Bonds, 2.95% August 15, 2051
Debt Instrument [Line Items]
Stated percentage rate	2.95%
Gross long-term debt	$ 750			750
SDG&E | First Mortgage Bonds, 3.7% March 15, 2052
Debt Instrument [Line Items]
Stated percentage rate	3.70%
Gross long-term debt	$ 500			500
SDG&E | First Mortgage Bonds, 5.35% April 1, 2053
Debt Instrument [Line Items]
Stated percentage rate	5.35%
Gross long-term debt	$ 800			800
SDG&E | First Mortgage Bonds, 5.55% April 5, 2054
Debt Instrument [Line Items]
Stated percentage rate	5.55%
Gross long-term debt	$ 600			$ 0
SDG&E | Other Long-Term Debt, February 18, 2024
Debt Instrument [Line Items]
Stated percentage rate				5.99%
Gross long-term debt	0			$ 400
SDG&E | Power purchase agreements
Debt Instrument [Line Items]
Long-term debt and finance leases	1,138			1,166
SDG&E | Other
Debt Instrument [Line Items]
Long-term debt and finance leases	67			67
SDG&E | Other Long-term Debt
Debt Instrument [Line Items]
Long term debt and lease obligations, including current maturities	1,205			1,633
SoCalGas
Debt Instrument [Line Items]
Gross long-term debt	6,650			6,050
Long-term debt and finance leases	87			84
Long term debt and lease obligations, including current maturities	7,469			6,866
Finance lease obligations	110			107
Finance lease obligations and other long term debt	819			816
Current portion of long-term debt and finance leases	(373)			(523)
Unamortized discount on long-term debt	(18)			(13)
Unamortized debt issuance costs	(47)			(42)
Total debt and lease obligations	7,031			6,288
Long-term debt and finance leases	$ 7,031			6,288
SoCalGas | First Mortgage Bonds, 3.15% September 15, 2024
Debt Instrument [Line Items]
Stated percentage rate	3.15%
Gross long-term debt	$ 0			500
SoCalGas | First Mortgage Bonds, 3.20% June 15, 2025
Debt Instrument [Line Items]
Stated percentage rate	3.20%
Gross long-term debt	$ 350			350
SoCalGas | First Mortgage Bonds, 2.60% June 15, 2026 [Member]
Debt Instrument [Line Items]
Stated percentage rate	2.60%
Gross long-term debt	$ 500			500
SoCalGas | First Mortgage Bonds, 2.55% February 1, 2030
Debt Instrument [Line Items]
Stated percentage rate	2.55%
Gross long-term debt	$ 650			650
SoCalGas | First Mortgage Bonds, 5.20% June 1, 2023
Debt Instrument [Line Items]
Stated percentage rate	5.20%
Gross long-term debt	$ 500			500
SoCalGas | First Mortgage Bonds, 5.05% September 1, 2034
Debt Instrument [Line Items]
Stated percentage rate	5.05%
Gross long-term debt	$ 600			0
SoCalGas | First Mortgage Bonds, 5.75% November 15, 2035
Debt Instrument [Line Items]
Stated percentage rate	5.75%
Gross long-term debt	$ 250			250
SoCalGas | First Mortgage Bonds, 5.125% November 15, 2040
Debt Instrument [Line Items]
Stated percentage rate	5.125%
Gross long-term debt	$ 300			300
SoCalGas | First Mortgage Bonds, 3.75% September 15, 2042
Debt Instrument [Line Items]
Stated percentage rate	3.75%
Gross long-term debt	$ 350			350
SoCalGas | First Mortgage Bonds, 4.45% March 15, 2044
Debt Instrument [Line Items]
Stated percentage rate	4.45%
Gross long-term debt	$ 250			250
SoCalGas | First Mortgage Bonds, 4.125% June 1, 2048
Debt Instrument [Line Items]
Stated percentage rate	4.125%
Gross long-term debt	$ 400			400
SoCalGas | First Mortgage Bonds, 4.30% January 15, 2049
Debt Instrument [Line Items]
Stated percentage rate	4.30%
Gross long-term debt	$ 550			550
SoCalGas | First Mortgage Bonds, 3.95% February 15, 2050
Debt Instrument [Line Items]
Stated percentage rate	3.95%
Gross long-term debt	$ 350			350
SoCalGas | First Mortgage Bonds, 6.35% November 15, 2052
Debt Instrument [Line Items]
Stated percentage rate	6.35%
Gross long-term debt	$ 600			600
SoCalGas | First Mortgage Bonds, 5.75% June 1, 2053
Debt Instrument [Line Items]
Stated percentage rate	5.75%
Gross long-term debt	$ 500			500
SoCalGas | First Mortgage Bonds, 5.60% April 1, 2054
Debt Instrument [Line Items]
Stated percentage rate	5.60%
Gross long-term debt	$ 500			0
SoCalGas | Other Long-Term Debt, 1.875% Notes May 14, 2026
Debt Instrument [Line Items]
Stated percentage rate	1.875%
Gross long-term debt	$ 4			4
SoCalGas | Other Long-Term Debt, 2.95% Notes April 15, 2027
Debt Instrument [Line Items]
Stated percentage rate	2.95%
Gross long-term debt	$ 700			700
SoCalGas | Other Long-Term Debt, 5.67% Notes January 18, 2028
Debt Instrument [Line Items]
Stated percentage rate	5.67%
Gross long-term debt	$ 5			5
Other Sempra
Debt Instrument [Line Items]
Gross long-term debt	11,908			8,558
Current portion of long-term debt and finance leases	(1,859)			(11)
Unamortized discount on long-term debt	(78)			(66)
Unamortized debt issuance costs	(144)			(112)
Long-term debt and finance leases	$ 14,509			12,018
Other Sempra | Other Long-Term Debt, 3.30% Notes April 1, 2025
Debt Instrument [Line Items]
Stated percentage rate	3.30%
Gross long-term debt	$ 750			750
Other Sempra | Other Long-Term Debt, 5.40% Notes August 1, 2026
Debt Instrument [Line Items]
Stated percentage rate	5.40%
Gross long-term debt	$ 550			550
Other Sempra | Other Long-Term Debt, 3.25% Notes June 15, 2027
Debt Instrument [Line Items]
Stated percentage rate	3.25%
Gross long-term debt	$ 750			750
Other Sempra | Other Long-Term Debt, 3.40% Notes February 1, 2028
Debt Instrument [Line Items]
Stated percentage rate	3.40%
Gross long-term debt	$ 1,000			1,000
Other Sempra | Other Long-Term Debt, 3.70% Notes April 1, 2029
Debt Instrument [Line Items]
Stated percentage rate	3.70%
Gross long-term debt	$ 500			500
Other Sempra | Other Long-Term Debt, 5.50% Notes August 1, 2033
Debt Instrument [Line Items]
Stated percentage rate	5.50%
Gross long-term debt	$ 700			700
Other Sempra | Other Long-Term Debt, 3.80% Notes February 1, 2038
Debt Instrument [Line Items]
Stated percentage rate	3.80%
Gross long-term debt	$ 1,000			1,000
Other Sempra | Other Long-Term Debt, 6.00% Notes October 15, 2039
Debt Instrument [Line Items]
Stated percentage rate	6.00%
Gross long-term debt	$ 750			750
Other Sempra | Other Long-Term Debt, 4.00% Notes February 1, 2048
Debt Instrument [Line Items]
Stated percentage rate	4.00%
Gross long-term debt	$ 800			800
Other Sempra | Other Long-Term Debt, 4.125% Junior Subordinated Notes April 1, 2052
Debt Instrument [Line Items]
Stated percentage rate	4.125%		4.125%
Gross long-term debt	$ 1,000			1,000
Other Sempra | Other Long-Term Debt, 6.40% Junior Subordinated Notes October 1, 2054
Debt Instrument [Line Items]
Stated percentage rate	6.40%
Gross long-term debt	$ 1,250			0
Other Sempra | Other Long-Term Debt, 6.875% Junior Subordinated Notes October 1, 2054
Debt Instrument [Line Items]
Stated percentage rate	6.875%
Gross long-term debt	$ 600			0
Other Sempra | Other Long-Term Debt, 6.875% Junior Subordinated Notes October 1, 2054, Two
Debt Instrument [Line Items]
Stated percentage rate	6.875%
Gross long-term debt	$ 500			0
Other Sempra | Other Long-Term Debt, 6.55% Junior Subordinated Notes April 1, 2055
Debt Instrument [Line Items]
Stated percentage rate	6.55%	6.55%
Gross long-term debt	$ 600			0
Other Sempra | Other Long-Term Debt, 6.625% Junior Subordinated Notes April 1, 2055
Debt Instrument [Line Items]
Stated percentage rate	6.625%	6.625%
Gross long-term debt	$ 400			0
Other Sempra | Other Long-Term Debt, 5.75% Junior Subordinated Notes July 1, 2079
Debt Instrument [Line Items]
Stated percentage rate	5.75%
Gross long-term debt	$ 758			758
Sempra Infrastructure
Debt Instrument [Line Items]
Gross long-term debt	$ 4,682			$ 3,649
Sempra Infrastructure | Loan at variable rates (weighted-average rate of 7.29% and 8.31% at December 31, 2024 and 2023, respectively) December 9, 2025
Debt Instrument [Line Items]
Stated percentage rate	7.29%			8.31%
Gross long-term debt	$ 1,063			$ 832
Sempra Infrastructure | 3.75% Notes January 14, 2028
Debt Instrument [Line Items]
Stated percentage rate	3.75%
Gross long-term debt	$ 300			300
Sempra Infrastructure | 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)
Debt Instrument [Line Items]
Gross long-term debt	$ 1,090			258
Sempra Infrastructure | 3.25% Notes January 15, 2032
Debt Instrument [Line Items]
Stated percentage rate	3.25%
Gross long-term debt	$ 400			$ 400
Sempra Infrastructure | Other Long-Term Debt, Loan At Variable Rates (7.37% Weighted-Average Rate) [Member]
Debt Instrument [Line Items]
Weighted average rate				7.37%
Long-term debt subject to variable rate				$ 58
Sempra Infrastructure | Loan at variable rates (4.03% after floating-to-fixed rate swap effective 2019) payable June 15, 2022 through November 19, 2034
Debt Instrument [Line Items]
Fixed interest rate after floating to fixed interest rate swaps	4.03%
Gross long-term debt	$ 90			96
Sempra Infrastructure | Loan at variable rates (4.03% after floating-to-fixed rate swap effective 2019) payable June 15, 2022 through November 19, 2034
Debt Instrument [Line Items]
Fixed interest rate after floating to fixed interest rate swaps	4.03%
Gross long-term debt	$ 90			96
Sempra Infrastructure | Other Long-Term Debt, Loan at Variable Rates (2.38% After Floating-To-Fixed Rate Swap Effective 2020) Payable June 15, 2022 Through November 19, 2034
Debt Instrument [Line Items]
Fixed interest rate after floating to fixed interest rate swaps	2.38%
Gross long-term debt	$ 90			96
Sempra Infrastructure | Other Long-Term Debt, 2.9% Loan payable June 15, 2022 through November 19, 2034
Debt Instrument [Line Items]
Fixed interest rate after floating to fixed interest rate swaps	2.90%
Gross long-term debt	$ 219			231
Sempra Infrastructure | Other Long-Term Debt, 4.875% Notes January 14, 2048
Debt Instrument [Line Items]
Stated percentage rate	4.875%
Gross long-term debt	$ 540			540
Sempra Infrastructure | Other Long-Term Debt, 4.75% Notes January 15, 2051
Debt Instrument [Line Items]
Stated percentage rate	4.75%
Gross long-term debt	$ 800			$ 800