DEBT AND CREDIT FACILITIES - SCHEDULE OF LONG-TERM DEBT INSTRUMENTS (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Gross long-term debt	$ 12,207	$ 10,654
Long-term debt and finance leases	1,276	1,286
Finance lease obligations	1,340	1,343
Current portion of long-term debt and finance leases	(975)	(1,019)
Long-term debt and finance leases	27,759	24,548
SDG&E
Debt Instrument [Line Items]
Gross long-term debt	8,350	7,400
Long-term debt and finance leases	1,192	1,217
Long term debt and lease obligations, including current maturities	9,983	9,056
Finance lease obligations	1,233	1,256
Current portion of long-term debt and finance leases	(441)	(489)
Unamortized discount on long-term debt	(29)	(20)
Unamortized debt issuance costs	(60)	(50)
Total debt and lease obligations	9,453	8,497
Long-term debt and finance leases	$ 9,453	8,497
SDG&E | First Mortgage Bonds, 3.6% September 1, 2023
Debt Instrument [Line Items]
Stated percentage rate	3.60%
Gross long-term debt	$ 0	450
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	0
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	0
SDG&E | Other Long-Term Debt, February 18, 2024
Debt Instrument [Line Items]
Stated percentage rate	5.99%
Gross long-term debt	$ 400	400
SDG&E | Power purchase agreements
Debt Instrument [Line Items]
Long-term debt and finance leases	1,166	1,194
SDG&E | Other
Debt Instrument [Line Items]
Long-term debt and finance leases	67	62
SDG&E | Other Long-term Debt
Debt Instrument [Line Items]
Long term debt and lease obligations, including current maturities	1,633	1,656
SoCalGas
Debt Instrument [Line Items]
Gross long-term debt	6,050	5,050
Long-term debt and finance leases	84	69
Long term debt and lease obligations, including current maturities	6,866	6,146
Finance lease obligations	107	87
Finance lease obligations and other long term debt	816	1,096
Current portion of long-term debt and finance leases	(523)	(318)
Unamortized discount on long-term debt	(13)	(12)
Unamortized debt issuance costs	(42)	(36)
Total debt and lease obligations	6,288	5,780
Long-term debt and finance leases	$ 6,288	5,780
SoCalGas | First Mortgage Bonds, 3.15% September 15, 2024
Debt Instrument [Line Items]
Stated percentage rate	3.15%
Gross long-term debt	$ 500	500
SoCalGas | First Mortgage Bonds, 3.2% June 15, 2025
Debt Instrument [Line Items]
Stated percentage rate	3.20%
Gross long-term debt	$ 350	350
SoCalGas | First Mortgage Bonds, 2.6% June 15, 2026
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	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, 4.3% 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	0
SoCalGas | Other Long-Term Debt, September 14, 2023
Debt Instrument [Line Items]
Stated percentage rate	5.10%
Gross long-term debt	$ 0	300
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	8,558	7,308
Current portion of long-term debt and finance leases	(11)	(212)
Unamortized discount on long-term debt	(66)	(62)
Unamortized debt issuance costs	(112)	(109)
Long-term debt and finance leases	$ 12,018	10,271
Other Sempra | Other Long-Term Debt, 3.3% 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	0
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, 3.4% 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, 3.7% 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	0
Other Sempra | Other Long-Term Debt, 3.8% 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% 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% 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%
Gross long-term debt	$ 1,000	1,000
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	$ 3,649	3,346
Sempra Infrastructure | Other Long-Term Debt, 6.3% Notes February 2, 2023
Debt Instrument [Line Items]
Stated percentage rate	6.30%
Fixed interest rate after floating to fixed interest rate swaps	4.12%
Gross long-term debt	$ 0	201
Sempra Infrastructure | Other Long-Term Debt, Loan at variable rates December 9, 2025
Debt Instrument [Line Items]
Stated percentage rate	8.31%
Gross long-term debt	$ 832	575
Sempra Infrastructure | Other Long-Term Debt, 3.75% Notes January 14, 2028
Debt Instrument [Line Items]
Stated percentage rate	3.75%
Gross long-term debt	$ 300	300
Sempra Infrastructure | Other Long-Term Debt, Loan At Variable Rates (5.33% After Floating-To-Fixed Rate Swap Effective 2023)
Debt Instrument [Line Items]
Fixed interest rate after floating to fixed interest rate swaps	5.33%
Gross long-term debt	$ 200
Sempra Infrastructure | Loan including $200 at variable rates (5.33% after floating-to-fixed rate swaps effective 2023) and $58 at variable rates (weighted-average rate of 7.37% at December 31, 2023) March 20, 2030, collateralized by plant assets
Debt Instrument [Line Items]
Gross long-term debt	$ 258	0
Sempra Infrastructure | Other Long-Term Debt, 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)
Debt Instrument [Line Items]
Long-term debt subject to variable rate	$ 58
Weighted average rate	7.37%
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	$ 96	98
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	$ 96	98
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	$ 96	98
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	$ 231	236
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