v3.26.3
REVENUES - RECEIVABLES FROM REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers $ 1,693 $ 1,887
Balance Sheet Location [Axis]: us-gaap:AccountsAndOtherReceivablesNetCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 15 22
Balance Sheet Location [Axis]: us-gaap:AccountsReceivableNetCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 1,573 1,767
Balance Sheet Location [Axis]: us-gaap:AccountsReceivableNetCurrent | Community Choice Aggregation    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 190 152
Balance Sheet Location [Axis]: us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 87 77
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 18 21
San Diego Gas and Electric Company    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 1,038 841
San Diego Gas and Electric Company | Balance Sheet Location [Axis]: us-gaap:AccountsAndOtherReceivablesNetCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 13 18
San Diego Gas and Electric Company | Balance Sheet Location [Axis]: us-gaap:AccountsReceivableNetCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 1,009 809
San Diego Gas and Electric Company | Balance Sheet Location [Axis]: us-gaap:AccountsReceivableNetCurrent | Community Choice Aggregation    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 190 152
San Diego Gas and Electric Company | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 5 3
San Diego Gas and Electric Company | Balance Sheet Location [Axis]: us-gaap:OtherReceivablesNetCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 11 11
Southern California Gas Company    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 578 980
Southern California Gas Company | Balance Sheet Location [Axis]: us-gaap:AccountsAndOtherReceivablesNetCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 2 4
Southern California Gas Company | Balance Sheet Location [Axis]: us-gaap:AccountsReceivableNetCurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers 563 958
Southern California Gas Company | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent    
Contract with Customer, Asset [Line Items]    
Receivables from revenues from contracts with customers $ 13 $ 18