DEBT AND CREDIT FACILITIES - COMMITTED LINES OF CREDIT (Details)	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 10,200,000,000
Available unused credit	7,626,000,000
Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	(2,019,000,000)
Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	(357,000,000)
Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	(198,000,000)
Other Sempra
Debt Instrument [Line Items]
Maximum borrowing capacity	4,000,000,000
Available unused credit	3,017,000,000
Other Sempra | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	(983,000,000)
Other Sempra | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
Other Sempra | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SDG&E
Debt Instrument [Line Items]
Maximum borrowing capacity	1,500,000,000
Available unused credit	968,000,000
SDG&E | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	(532,000,000)
SDG&E | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SDG&E | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SoCalGas
Debt Instrument [Line Items]
Maximum borrowing capacity	1,200,000,000
Available unused credit	696,000,000
SoCalGas | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	(504,000,000)
SoCalGas | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SoCalGas | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due September 2026
Debt Instrument [Line Items]
Maximum borrowing capacity	500,000,000
Available unused credit	409,000,000
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due September 2026 | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	0
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due September 2026 | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	(91,000,000)
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due September 2026 | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due August 2028
Debt Instrument [Line Items]
Maximum borrowing capacity	1,500,000,000
Available unused credit	1,234,000,000
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due August 2028 | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	0
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due August 2028 | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	(266,000,000)
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due August 2028 | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due December 2028
Debt Instrument [Line Items]
Maximum borrowing capacity	1,000,000,000
Available unused credit	1,000,000,000
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due December 2028 | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	0
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due December 2028 | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
SI Partners and IEnova | SI Partners and IEnova Committed Line Of Credit Due December 2028 | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
Port Arthur LNG I | Port Arthur LNG Committed Line Of Credit Due March 2030
Debt Instrument [Line Items]
Maximum borrowing capacity	200,000,000
Available unused credit	113,000,000
Port Arthur LNG I | Port Arthur LNG Committed Line Of Credit Due March 2030 | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	0
Port Arthur LNG I | Port Arthur LNG Committed Line Of Credit Due March 2030 | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
Port Arthur LNG I | Port Arthur LNG Committed Line Of Credit Due March 2030 | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	(87,000,000)
Port Arthur LNG II | Port Arthur LNG II Committed Line Of Credit Due September 2030
Debt Instrument [Line Items]
Maximum borrowing capacity	300,000,000
Available unused credit	189,000,000
Port Arthur LNG II | Port Arthur LNG II Committed Line Of Credit Due September 2030 | Commercial Paper
Debt Instrument [Line Items]
Line of credit outstanding	0
Port Arthur LNG II | Port Arthur LNG II Committed Line Of Credit Due September 2030 | Line of Credit
Debt Instrument [Line Items]
Line of credit outstanding	0
Port Arthur LNG II | Port Arthur LNG II Committed Line Of Credit Due September 2030 | Letters of Credit
Debt Instrument [Line Items]
Line of credit outstanding	$ (111,000,000)