DEBT AND CREDIT FACILITIES - COMMITTED LINES OF CREDIT NARRATIVE (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) lender lineOfCredit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 9,900,000,000
Primary committed lines of credit | lineOfCredit	7
Number of lenders | lender	23
Lenders, percent of facility	6.00%
Committed lines of credit, capacity for issuance of letters of credit	$ 200,000,000
Line of credit, increase limit	$ 500,000,000
Maximum ratio of indebtedness to total capitalization	0.65
Sempra
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 4,000,000,000
SDG&E
Line of Credit Facility [Line Items]
Maximum borrowing capacity	1,500,000,000
Committed lines of credit, capacity for issuance of letters of credit	100,000,000
Line of credit, increase limit	$ 250,000,000
Maximum ratio of indebtedness to total capitalization	0.65
SoCalGas
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,200,000,000
Committed lines of credit, capacity for issuance of letters of credit	150,000,000
Line of credit, increase limit	$ 250,000,000
Maximum ratio of indebtedness to total capitalization	0.65
SI Partners and IEnova
Line of Credit Facility [Line Items]
Number of lines of credit | lineOfCredit	3
SI Partners and IEnova | IEnova And SI Partners Committed Line Of Credit Due September 2025
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 500,000,000
Variable percentage rate	0.80%
SI Partners and IEnova | IEnova Committed Line Of Credit Due August 2026
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,000,000,000
Number of lenders | lender	12
Variable percentage rate	0.10%
SI Partners and IEnova | IEnova And SI Partners Committed Line Of Credit Due August 2028
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,500,000,000
Variable percentage rate	0.90%
Port Arthur LNG | Port Arthur LNG Committed Line Of Credit Due March 2030
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 200,000,000
Port Arthur LNG | Port Arthur LNG Committed Line Of Credit Due March 2030 | Line of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 200,000,000
Term of contract (in years)	7 years
SI Partners
Line of Credit Facility [Line Items]
Primary committed lines of credit | lineOfCredit	3
Committed lines of credit, capacity for issuance of letters of credit	$ 200,000,000
Maximum adjustment EBITDA allowed	5.25
SI Partners | Swingline Sub-Limit
Line of Credit Facility [Line Items]
Line of credit outstanding	$ 100,000,000
SI Partners | IEnova And SI Partners Committed Line Of Credit Due August 2028
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,500,000,000
Number of lenders | lender	12
IEnova | IEnova Committed Line Of Credit Due August 2026
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 910,000,000
Number of lenders | lender	11
IEnova | IEnova And SI Partners Committed Line Of Credit Due August 2028
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,365,000,000
Number of lenders | lender	11